| UNITED      STATES                      |
|-----------------------------------------|
| SECURITIES      AND EXCHANGE COMMISSION |
| Washington,      D.C.  20549  |
| FORM      10-K                          |

| (MARK      ONE)                                            |
|------------------------------------------------------------|
| (x)                                                        | Annual      Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of      1934 (Fee Required)For      the fiscal year ended April 3, 2010 |
| or                                                         |
| (  )                                             | Transition      Report Pursuant to Section 13 or 15(d) of the Securities and Exchange Act      of 1934For      the transition period from _______ to ________ |
|  Commission      File No. 0-12718                     |
|                                                       |
| SUPERTEX,      INC.                                        |
| (Exact      name of Registrant as specified in itscharter) |

| California                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 94-2328535                                                                       |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------|
| (State      or other jurisdiction of incorporation or organization)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | (I.R.S.      Employer Identification No.)                                        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| 1235      Bordeaux Drive, Sunnyvale, California 94089                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| (Address      of principal executive offices)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Registrant's      Telephone Number, Including Area Code:  (408)      222-8888                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                             |
| Securities      registered pursuant to Section 12(b) of the Act:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Title      of each class: Common Stock                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Name      of each exchange on which registered: NASDAQ Global Select      Market |
| Securities      registered pursuant to Section 12(g) of the Act: None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Indicate      by check mark if the registrant is a well-known seasoned issuer, as      defined in Rule 405 of the Securities Act.  Yes  o   No  x                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Indicate      by check mark if the registrant is not required to file reports pursuant      to Section 13 of Section 15(d) of the Act. Yes  o   No  x                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Indicate      by check mark whether the Registrant (1) has filed all reports required to      be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934      during the preceding 12 months (or for such shorter period that the      Registrant was required to file such reports), and (2) has been subject to      such filing requirements for the past 90 days. Yes  x   No  o                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Indicate      by check mark whether the registrant has submitted electronically and      posted on its corporate Website, if any, every Interactive Data File      required to be submitted and posted pursuant to Rule 405 of Regulation S-T      (§229.405 of this chapter) during the preceding 12 months (or for shorter      period that the registrant was required to submit and post such files).      Yes o No      o                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Indicate      by check mark if disclosure of delinquent filers pursuant to Item 405 of      Regulation S-K (Sec. 229.405 of this chapter) is not contained herein, and      will not be contained, to the best of registrant’s knowledge, in      definitive proxy or information statements incorporated by reference in      Part III of this Form 10-K or any amendment to this Form 10-K. o                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Indicate      by check mark whether the registrant is an accelerated filer (as defined      in Rule 12b-2 of the Act). Check one.Large      accelerated filer o           Accelerated      filer x            Non-accelerated      filer o            Smaller      Reporting Company o                                                                                                                                                                                                                                                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| As      of September 25, 2009, the last business day of the registrant’s most      recently completed second fiscal quarter, there were 12,914,299 shares of      the registrant’s common stock outstanding, and the aggregate market value      of such shares held by non-affiliates of the registrant was $328,255,992,      based on the closing price reported on the NASDAQ National Market      on September 25, 2009. Shares of common stock held by officers, directors      and other persons who may be deemed “affiliates” of the Registrant have      been excluded from this computation.  This determination of      affiliate status is not necessarily a conclusive determination for other      purposes. The total number of shares outstanding of the Registrant's      common stock as of May 28, 2010, was 12,954,085. |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Indicate      by check mark whether the registrant is a shell company (as defined in      Rule 12b-2 of the Act). Yes  o    No      x                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Documents Incorporated by      Reference:  Part III incorporates by reference portions      of the Company's definitive proxy statement for the Annual Meeting of      Shareholders to be held on August 20, 2010 (the "Proxy      Statement").                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Exhibit      Index is on Page 73                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Total      number of pages is  74                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |

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|       |                                                                                                                                                                                                                                                                                                                                                |   | PART      I                                                                                                                                                                                                                                                                                                                          |   |   |
|------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   | Page   |
| Item       | 1.                                                                                                                                                                                                                                                                                                                                                  |   | Business……………………………………………………………………………………….……………………………… |   | 1      |
| Item       | 1A.                                                                                                                                                                                                                                                                                                                                                 |   | Risk      Factors…………………………………………………………………………………...………………………………    |   | 9      |
| Item       | 1B.                                                                                                                                                                                                                                                                                                                                                 |   | Unresolved      Staff Comments…………………………………………………………………..………………………………                                  |   | 13     |
| Item       | 2.                                                                                                                                                                                                                                                                                                                                                  |   | Properties……………………………………………………………………………………...……………………………...        |   | 13     |
| Item       | 3.                                                                                                                                                                                                                                                                                                                                                  |   | Legal      Proceedings……………………………………………………………………………..……………………………...                  |   | 13     |
| Item       | 4.                                                                                                                                                                                                                                                                                                                                                  |   | Removed      and Reserved………………………………………………………………………..……………………………....                            |   | 13     |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   | PART      II                                                                                                                                                                                                                                                                                                                         |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
| Item       | 5.                                                                                                                                                                                                                                                                                                                                                  |   | Market      for Registrant's Common Equity, Related Shareholder Matters and Issuer      Purchases of Equity Securities…………                                                                                                                                                                                   |   | 14     |
| Item       | 6.                                                                                                                                                                                                                                                                                                                                                  |   | Selected      Financial Data………………………………………………………………………..………………………………                      |   | 17     |
| Item       | 7.                                                                                                                                                                                                                                                                                                                                                  |   | Management's      Discussion and Analysis of Financial Condition and Results of      Operations………………………………….                                                                                                                                          |   | 17     |
| Item       | 7A.                                                                                                                                                                                                                                                                                                                                                 |   | Quantitative      and Qualitative Disclosures about Market      Risk………………………………………………………………….                                                                                 |   | 35     |
| Item       | 8.                                                                                                                                                                                                                                                                                                                                                  |   | Financial      Statements and Supplementary      Data………………………………………………..……………………………….                                                           |   | 36     |
| Item       | 9.                                                                                                                                                                                                                                                                                                                                                  |   | Changes      in and Disagreements with Accountants on Accounting and Financial      Disclosure………………………………….                                                                                                                                           |   | 36     |
| Item       | 9A.                                                                                                                                                                                                                                                                                                                                                 |   | Controls      and Procedures……………………………………………………………………………………………………...                            |   | 36     |
| Item       | 9B.                                                                                                                                                                                                                                                                                                                                                 |   | Other      Information……………………………………………………………………………..……………………………....                 |   | 38     |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   | PART      III                                                                                                                                                                                                                                                                                                                        |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
| Item       | 10.                                                                                                                                                                                                                                                                                                                                                 |   | Directors,      Executive Officers, and Corporate      Governance…………………………………………………………………...                                                                                  |   | 38     |
| Item       | 11.                                                                                                                                                                                                                                                                                                                                                 |   | Executive      Compensation……………………………………………………………………………………………………...                             |   | 38     |
| Item       | 12.                                                                                                                                                                                                                                                                                                                                                 |   | Security      Ownership of Certain Beneficial Owners and Management and Related      Stockholder Matters………………...…...                                                                                                                                                                      |   | 38     |
| Item       | 13.                                                                                                                                                                                                                                                                                                                                                 |   | Certain      Relationships and Related Transactions, and Director      Independence………………...……………………………....                                                                                                                    |   | 39     |
| Item       | 14.                                                                                                                                                                                                                                                                                                                                                 |   | Principal      Accountant Fees and      Services……………………………………………………….……………………………...                                                 |   | 39     |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   | PART      IV                                                                                                                                                                                                                                                                                                                         |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
| Item       | 15.                                                                                                                                                                                                                                                                                                                                                 |   | Exhibits      and Financial Statement      Schedules…………………………………………………..………………………………                                                      |   | 40     |
|       |                                                                                                                                                                                                                                                                                                                                                |   |                                                                                                                                                                                                                                                                                                                                 |   |   |
| Signatures | ………………………………………………………………………………………………….…………………………….. |   | 42                                                                                                                                                                                                                                                                                                                                   |

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| (1)   | A      family of products for driving electroluminescent (“EL”) lamps for      backlighting hand-held instruments, such as watches, monochrome screens,      cell phone keypads and MP3 players. We are one of the key providers of EL      drivers for cell phones and watches, and we have a significant share of      this market due to our patented inductorless EL driver  ICs. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (2)   | Driver      ICs for driving non-impact printers and plotters, primarily using inkjet      technologies. Our printer product family is used in ink-jet and      electrostatic types of printers and plotters that are mostly high-end      products with full glossy color capability, high resolution and high-speed      output. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| Name                     |   | Position      with the Company                           |   | Age    |   | Officer      Since |
|--------------------------|--------|----------------------------------------------------------|--------|--------|--------|--------------------|
|                     |   |                                                     |   |   |   |               |
| Henry      C. Pao        |   | President      and Chief Executive Officer               |   | 72     |   | 1976               |
| Benedict      C. K. Choy |   | Senior      Vice President, Technology Development       |   | 64     |   | 1976               |
| William      P. Ingram   |   | Vice      President, Wafer Fab Operations                |   | 62     |   | 1999               |
| Michael      Lee         |   | Vice      President, I.C. Design                         |   | 55     |   | 1999               |
| William      Petersen    |   | Vice      President, Worldwide Sales                     |   | 57     |   | 2001               |
| Ahmed      Masood        |   | Vice      President, Marketing                           |   | 49     |   | 2006               |
| Michael      Tsang       |   | Vice      President, Standard Products                   |   | 51     |   | 2006               |
| Phillip      A. Kagel    |   | Vice      President, Finance and Chief Financial Officer |   | 60     |   | 2006               |
| Hernan      DeGuzman     |   | Vice      President, Asia Sales                          |   | 47     |   | 2010               |

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| · | The      semiconductor industry is historically cyclical and subject to significant      volatility. During the second half of fiscal 2009 through the first half      of fiscal 2010, the severe global economic downturn caused substantial      reduction in demand for our products, thereby adversely affecting our      financial results. We are subject to continued fluctuations which could      affect future revenues, profit and cash. Many factors affect demand for      our products, including credit availability, rising interest rates,      consumer spending pricing levels, and costs of materials. There can be no      assurance that if the global economy recovers that our sales will increase      commensurately. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      have focused our product offerings primarily on niche markets which      leverage our capabilities and in which we believe we have dominance      because we are a technology enabler for our customers.  We      generally choose markets which are sizable enough to be worth pursuing but      which are not large enough to attract fierce competition.  These      markets could grow sufficiently to attract increased competition or else      competitors could enter due to happenstance or downturns      elsewhere.  One of our emerging markets is driver ICs for LED      lighting and backlighting, which has begun to grow and is expected to      become a large market during the next few years and is beginning to      attract severe competition. In addition, our niche markets might be more      susceptible to shrinkage than more diverse markets due to their      concentration on a few productofferings. |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      work with our customers to develop products that they will design into      their systems.  Even if we do achieve a design win, the      customer’s system may never go into production or the production volume      may be smaller than we had anticipated.  Although we attempt to      develop products which will be useful for multiple customers, we may      misjudge the market and develop a product which may be useful for only a      very few customers. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | A      significant portion of our sales are from a small number of customers and      the loss of the one of these customers or failure to collect a receivable      from them could adversely affect our operations and financial position. We      do not have a long-term distributorship agreement with any of our      distributors. Normal terms and conditions of sale apply, which include a      60-day notice of cancellation and charges for work-in-process for      cancellations less than 60 days from shipment.  While we have      maintained a good relationship with our significant customers and      distributors, deterioration in that relationship could materially and      adversely affect our business and financial results. We estimate that the      combined sales to Samsung Electronics and General Electric Company      accounted for a total of 14% and 11% , respectively, of our net sales for      the fiscal year ended April 3,2010. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      have several competitors that are substantially larger and could bring to      bear substantially more resources than we have in our niche      markets.  We have been able to maintain profitable margins in      part because of our dominance in most of our niche      markets.  Increased competition could cause our margins to      decrease. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| · | We      sell a substantial amount of our products internationally. International      sales represent 68%, 63% and 63% and of net sales, for fiscal years 2010,      2009 and 2008, respectively.  We expect our international sales      to continue to account for a significant portion of our total      sales.  We also package and test most of our products      abroad.  Problems with foreign economies, political turmoil,      wars, epidemics, fluctuations in currency exchange rate, increased freight      costs, interruptions in air transportation, and generally longer      receivable collection periods could disrupt our business and increase our      operating expenses. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | Our      gross margins may fluctuate depending on many factors, including but not      limited to, our product mix, competitive pricing dynamics, product yields,      various manufacturing costs, plant utilization, provisions for excess and      obsolete inventory, absorption of manufacturing overhead, product      warranties, and returns andallowances. |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      are dependent upon one fab which we own and operate.  Were this      fab to become unable to meet our needs for causes such as obsolescence due      to process technology changes, our ability to produce our products would      be adversely affected.  In addition, we could encounter      difficulties in operating our fab after an earthquake or any natural      disaster. |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | Our      operations may be interrupted and our business would be harmed in the      event of an earthquake, terrorist act, and other disasters.  Our      principal executive offices, our fab facility, and major suppliers are      located in areas that have been subject to severe      earthquakes.  In the event of an earthquake, we and/or our major      suppliers may be temporarily unable to continue operations and may suffer      significant property damage.  Any such interruption in our      ability or that of our major suppliers to continue operations at our      facilities could delay the development and shipment of our      products.  Like other U.S. companies, our business and operating      results are subject to uncertainties arising out of the economic      consequences of current and potential military actions or additional      terrorist activities and associated political instability, and the impact      of heightened security concerns on domestic and international travel and      commerce.  Such uncertainties could also lead to delays or      cancellations of customer orders, a general decrease in corporate spending      or our inability to effectively market and sell our      products.  Any of these results could substantially harm our      business and results of operations, causing a decrease in our      revenues. |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      are dependent upon continued innovation by our engineers.  The      competition for engineers with relevant experience is extremely intense in      the Silicon Valley, where most of our engineers are located.  We      must compete in terms of salary, benefits, and working conditions with      many start-ups which can offer more equity incentives. We established an      IC Design Center in Hong Kong in fiscal 2001 where competition for      qualified engineers is not as intense as that in Silicon Valley. However,      a majority of our process technology and product innovation activities      remains in our Sunnyvale and San Joseoffices. |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | Our      success depends upon our ability to protect our intellectual property,      including patents, trade secrets, and know-how, and to continue our      technological innovation. We cannot assure that the steps we have taken to      protect our intellectual property will be adequate to prevent      misappropriation or that others will not develop competitive technologies      or products.  The failure to obtain necessary licenses or other      rights could cause us to lose market share and harm our      business. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | We      are dependent upon the continued service of several of our key management      and technical personnel.  The loss of the services of one or      more of our engineers, executive officers and other key personnel or our      inability to recruit replacements for, or to attract, retain and motivate      these individuals would be harmful to our business.  We do not      have long-term employment contracts with our  employees. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | We      operate a fab in San Jose, California, at which we use various chemicals      and solvents that are regulated by various environmental      agencies.  We cooperate and work with these agencies to comply      with these regulations.  Should we nonetheless inadvertently      contaminate the soil or ground water, or should the previous operator of      the fab have done so, we may be responsible for significant costs to      remediate the situation As of March 28, 2009, we estimated our asset      retirement obligation to be $51,000. During fiscal 2010, we reassessed and      increased our asset retirement obligation by $275,000. As of April 3,      2010, we estimated our asset retirement obligation to be      $326,000. |
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| ·   | Failure      to comply with present or future laws, rules and regulations of any kind      that govern our business could result in suspension of all or a portion of      production, cessation of all or a portion of operations, or the imposition      of significant administrative, civil, or criminal penalties, any of which      could harm our business. Depending on whether certain of our semiconductor      products are subject to control under the International Traffic and Arms      Regulations (“ITAR”), certain of our testing and assembly operations      offshore with respect to such products may have violated ITAR. We have      accordingly so voluntarily notified the US Department of State recently      and are investigating the situation and circumstances. Should our actions      have violated ITAR, we could face substantial civil fines or other      penalties at the discretion of the US Department of State. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | A      director of and the President and CEO of the Company, Henry Pao, along      with his brother, Frank Pao, and the estate of their late father, Yunni      Pao, collectively own approximately 13% of our outstanding      stock.  They have no agreement among themselves to act together      with respect to the Company or their stockholdings.  However,      were they to act in concert, they would be our largest beneficial      shareholder and may have the ability to elect one or more directors, to      direct management, and to delay or prevent a change in      control. |
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| ·   | We      are subject to taxation by domestic and foreign taxing      authorities.  Our business is subject to the application of      multiple and sometimes conflicting tax laws and      regulations.  The application of tax laws is subject to legal      and factual interpretation, judgment and uncertainty, and tax laws      themselves are subject to change.  Consequently, taxing      authorities from various jurisdictions may impose tax assessments or      judgments against us that could result in a significant change to earnings      related to prior periods, and or an increase in our effective income tax      rate.    |
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| · | The      Sarbanes-Oxley Act of 2002 required us to change or supplement some of our      corporate governance and securities disclosure and compliance practices.      The SEC and NASDAQ have revised, and continue to revise their regulations      and listing standards. These developments have increased and may continue      to increase our legal compliance and financial reporting costs. These      developments also may make it more difficult and more expensive for us to      obtain director and officer liability insurance, and we may be required to      accept reduced coverage or incur substantially higher costs to obtain      coverage. This, in turn, could make it more difficult for us to attract      and retain qualified members of our board of directors or qualified      executive officers. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | We      invest our excess cash in marketable securities consisting primarily of      auction rate securities (“ARS”), municipal bonds, and money market funds.      As of the end of fiscal year 2010, the ARS we owned had a par value of      $69,200,000. Since the fourth fiscal quarter of 2008, the ARS market has      experienced failures. The funds associated with securities that      experienced failed auctions will not be accessible until a successful      auction occurs, a buyer is found outside of the auction process, or the      underlying securities have matured or are recalled by the issuer. Given      the recent disruptions in the credit markets and the fact that the      liquidity for these types of securities remains uncertain, as of April 3,      2010, we classified the majority of our ARS as long-term assets in our      Consolidated Balance Sheet, as our ability to liquidate such securities in      the next 12 months is uncertain. We have also recorded a $4,200,000      temporary decline in fair value for these investments, which in accordance      with the authoritative guidance, has been recorded in Other Comprehensive      Loss. We believe that we will be able to recover these securities at par      value in a future period, as they are AAA or Aaa rated and, are guaranteed      by the United States Department of Education. However, there is no      assurance that we will be able to settle these bonds and recover the cash,      nor if we do recover the cash, when this may occur. We may have to incur      further impairment if the auctions of our securities continue to fail. If      the fair value of these investments declines permanently or is other than      temporarily impaired, we would be required to take an impairment charge      which would flow through our income statement as an expense and could      cause us to incur a loss for the relevant fiscal  period. |
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| · | Stock      option accounting rules require charges to income due to stock      compensation associated with options and result in lower reported      operating results prepared in accordance with generally accepted      accounting principles. The additional expenses resulting from the      authoritative guidance in stock compensation may negatively impact our      future stock price if we continue to utilize broad-based employee stock      plans to attract and retain employees or else, if we cease doing so and      others do not, it could result in a competitive disadvantage to us in the      employee marketplace. |
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| ·   | Our      stock price is subject to wide fluctuations from many factors such as      changing financial market conditions, variations in our quarterly      operating results, changes in estimates and recommendations by securities      analysts, hedging of our stock and other transactions by      investors. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | Item      5.  Market for Registrant's Common Equity and Related      Shareholder Matters and Issuer Purchases of Equity    Securities |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------|

|                                     |   | Fiscal      Years |   |
|------------------------------------------|--------|-------------------|--------|
|                                     |   | 2005              |   |   | 2006 |   |   | 2007 |   |   | 2008 |   |   | 2009 |   |   | 2010 |   |
| Nasdaq      Stock Market (US only)       |   | $                 | 100.00 |   |   | $ | 118.83 |   |   | $ | 123.22 |   |   | $ | 113.83 |   |   | $ | 62.97 |   |   | $ | 97.72 |   |
| Nasdaq      Electronic Components Stocks |   | $                 | 100.00 |   |   | $ | 114.92 |   |   | $ | 112.55 |   |   | $ | 108.77 |   |   | $ | 76.23 |   |   | $ | 118.33 |   |
| Supertex,      Inc.                      |   | $                 | 100.00 |   |   | $ | 211.82 |   |   | $ | 186.99 |   |   | $ | 115.60 |   |   | $ | 137.56 |   |   | $ | 144.09 |   |

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|                |   | Fiscal      Years Ended |   |
|---------------------|--------|-------------------------|--------|
|                |   | April      3, 2010      |   |   | March      28, 2009 |   |
|                |   | High                    |   |   | Low |   |   | High |   |   | Low |   |
| First      Quarter  |   | $                       | 27.30  |   |   | $ | 22.49 |   |   | $ | 26.13 |   |   | $ | 20.18 |   |
| Second      Quarter |   |                    | 31.73  |   |   |   | 23.05 |   |   |   | 33.50 |   |   |   | 23.21 |   |
| Third      Quarter  |   |                    | 31.27  |   |   |   | 23.16 |   |   |   | 28.44 |   |   |   | 18.26 |   |
| Fourth      Quarter |   |                    | 29.80  |   |   |   | 22.64 |   |   |   | 24.43 |   |   |   | 18.53 |   |

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|                                                            |   | Number      of Securities to be Issued upon Exercise of Outstanding Options, Warrants,      and Rights |      |   | Weighted-Average      Exercise Price of Outstanding Options, Warrants, andRights |   |   | Number      of Securities Remaining Available for Future Issuance under Equity      Compensation Plans (Excluding Securities Reflected in Column      (a)) |   |
|-----------------------------------------------------------------|--------|--------------------------------------------------------------------------------------------------------|-----------|--------|----------------------------------------------------------------------------------|--------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|
| Plan      Category                                              |   | (a)                                                                                                    |      |   | (b)                                                                              |   |   | (c)                                                                                                                                                        |   |
| Equity      compensation plans approved by security holders     |   |                                                                                                   | 1,444,942 |   |                                                                             | $      | 27.31  |                                                                                                                                                       |   |   | 1,329,639 | (1) |
| Equity      compensation plans not approved by security holders |   |                                                                                                   | 0         |   |                                                                             |   | N/A    |                                                                                                                                                       |   |   | 0 |   |

----

|                                          |   | Fiscal      Year |    |   | Fiscal      Year |   |    | Fiscal      Year |   |   | Fiscal      Year |   |   | Fiscal      Year |    |
|-----------------------------------------------|--------|------------------|---------|--------|------------------|--------|---------|------------------|--------|--------|------------------|--------|--------|------------------|---------|
| (in      thousands, except per share amounts) |   | 2010             |    |   | 2009             |   |    | 2008             |   |   | 2007             |   |   | 2006             |    |
| Balance      Sheet Data:                      |   |             |    |   |             |   |    |             |   |   |             |   |   |             |    |
| Total      assets                             |   | $                | 205,218 |   |             | $      | 190,304 |             |   | $      | 177,351          |   |   | $                | 185,932 |   |   | $ | 156,133 |   |
| Total      liabilities                        |   | $                | 24,842  |   |             | $      | 22,728  |             |   | $      | 25,476           |   |   | $                | 24,680  |   |   | $ | 22,709 |   |
|                                          |   |             |    |   |             |   |    |             |   |   |             |   |   |             |    |   |   |   |   |   |
| Statement      of Income Data(1):             |   |             |    |   |             |   |    |             |   |   |             |   |   |             |    |   |   |   |   |   |
| Net      Sales                                |   | $                | 66,724  |   |             | $      | 78,810  |             |   | $      | 82,559           |   |   | $                | 98,020  |   |   | $ | 80,098 |   |
| Gross      margin                             |   |             | 32,002  |   |             |   | 41,879  |             |   |   | 46,981           |   |   |             | 58,349  |   |   |   | 44,640 |   |
| Income      from operations                   |   |             | 3,758   |   |             |   | 13,994  |             |   |   | 16,492           |   |   |             | 27,904  |   |   |   | 19,532 |   |
| Net      income                               |   | $                | 5,125   |   |             | $      | 12,545  |             |   | $      | 17,005           |   |   | $                | 21,427  |   |   | $ | 15,877 |   |
| Net      income per share:                    |   |             |    |   |             |   |    |             |   |   |             |   |   |             |    |   |   |   |   |   |
| Basic                                         |   | $                | 0.40    |   |             | $      | 0.98    |             |   | $      | 1.25             |   |   | $                | 1.56    |   |   | $ | 1.19 |   |
| Diluted                                       |   | $                | 0.39    |   |             | $      | 0.97    |             |   | $      | 1.23             |   |   | $                | 1.53    |   |   | $ | 1.15 |   |
| Shares      used in per share computation:    |   |             |    |   |             |   |    |             |   |   |             |   |   |             |    |   |   |   |   |   |
| Basic                                         |   |             | 12,912  |   |             |   | 12,836  |             |   |   | 13,585           |   |   |             | 13,715  |   |   |   | 13,313 |   |
| Diluted                                       |   |             | 12,995  |   |             |   | 12,927  |             |   |   | 13,790           |   |   |             | 14,040  |   |   |   | 13,770 |   |

----

|                                          |   | Fiscal      Years Ended |   |
|-----------------------------------------------|--------|-------------------------|--------|
|                                          |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Net      sales                                |   |                    | 100.0  | % |   |   | 100.0 | % |   |   | 100.0 | % |
| Cost      of sales                            |   |                    | 52.0   |   |   |   | 46.9 |   |   |   | 43.1 |   |
| Research      and development                 |   |                    | 23.1   |   |   |   | 18.4 |   |   |   | 18.1 |   |
| Selling,      general and administrative      |   |                    | 19.2   |   |   |   | 16.9 |   |   |   | 18.8 |   |
| Income      from operations                   |   |                    | 5.7    |   |   |   | 17.8 |   |   |   | 20.0 |   |
| Interest      and Other income:               |   |                    |   |   |   |   |   |   |   |   |   |   |
| Interest      income                          |   |                    | 1.6    |   |   |   | 4.0 |   |   |   | 7.5 |   |
| Other      income, net                        |   |                    | 2.3    |   |   |   | (1.8 | ) |   |   | (0.3 | ) |
| Income      before provision for income taxes |   |                    | 9.6    |   |   |   | 20.0 |   |   |   | 27.2 |   |
| Provision      for income taxes               |   |                    | 1.9    |   |   |   | 4.1 |   |   |   | 6.6 |   |
| Net      income                               |   |                    | 7.7    | % |   |   | 15.9 | % |   |   | 20.6 | % |

----

----

----

----

----

| (dollars      in thousands) |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|-----------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| Markets                     |   | April      3, 2010      |   |   | March      28, 2009 |   |   | Change |   |
| Medical      Electronics    |   | $                       | 24,735 |   |                |   | 37 | % |   | $ | 33,368 |   |   |   | 43 | % |   |   | -26 | % |
| LED      Lighting           |   |                    | 14,850 |   |                |   | 22 | % |   |   | 4,973 |   |   |   | 6 | % |   |   | 199 | % |
| Imaging                     |   |                    | 13,407 |   |                |   | 20 | % |   |   | 20,550 |   |   |   | 26 | % |   |   | -35 | % |
| Telecom                     |   |                    | 5,252  |   |                |   | 8 | % |   |   | 7,139 |   |   |   | 9 | % |   |   | -26 | % |
| Industrial/Other            |   |                    | 8,480  |   |                |   | 13 | % |   |   | 12,780 |   |   |   | 16 | % |   |   | -34 | % |
| Net      Sales              |   | $                       | 66,724 |   |                |   | 100 | % |   | $ | 78,810 |   |   |   | 100 | % |   |   | -15 | % |

----

----

|                        |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|-----------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands) |   | April      3, 2010      |   |   | March      28, 2009 |   |   | Change |   |
| China                       |   | $                       | 21,060 |   |                |   | 32 | % |   | $ | 17,968 |   |   |   | 23 | % |   |   | 17 | % |
| United      States          |   |                    | 21,043 |   |                |   | 32 | % |   |   | 29,301 |   |   |   | 37 | % |   |   | -28 | % |
| Asia      (excl. China)     |   |                    | 17,280 |   |                |   | 26 | % |   |   | 20,670 |   |   |   | 26 | % |   |   | -16 | % |
| Europe                      |   |                    | 7,022  |   |                |   | 10 | % |   |   | 10,093 |   |   |   | 13 | % |   |   | -30 | % |
| Other                       |   |                    | 319    |   |                |   | 0 | % |   |   | 778 |   |   |   | 1 | % |   |   | -59 | % |
| Total      Net Sales        |   | $                       | 66,724 |   |                |   | 100 | % |   | $ | 78,810 |   |   |   | 100 | % |   |   | -15 | % |

|                                                                               |   | Fiscal      Years Ended |   |
|------------------------------------------------------------------------------------|--------|-------------------------|--------|
| (Dollars      in thousands)                                                        |   | April      3, 2010      |   |   | March      28, 2009 |   |
| Gross      Margin Percentage                                                       |   |                    | 48     | % |   |   | 53 | % |
| Included      in Gross Margin Percentage Above                                     |   |                    |   |   |   |   |   |   |
| Gross      Margin Benefit from Cost of Previously Written Down Inventory      Sold |   | $                       | 1,645  |   |   | $ | 1,372 |   |
| Percentage      of Net Sales                                                       |   |                    | 2.5    | % |   |   | 1.7 | % |

|                               |   | Fiscal      Years Ended |   |   |                |   |
|------------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)        |   | April      3, 2010      |   |   | March      28, 2009 |   |   | Year-Over-Year      Change |   |
|  R&D      Expenses        |   | $                       | 15,404 |   |                | $      | 14,553 |   |   |   | 6 | % |
|  Percentage of Net      Sales |   |                    | 23     | %      |                |   | 18 | % |   |   |   |   |

----

|                         |   | Fiscal      Years Ended |   |   |                |   |
|------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)  |   | April      3, 2010      |   |   | March      28, 2009 |   |   | Year-Over-Year      Change |   |
| SG&A      Expenses       |   | $                       | 12,840 |   |                | $      | 13,332 |   |   |   | -4 | % |
| Percentage      of Net Sales |   |                    | 19     | %      |                |   | 17 | % |   |   |   |   |

|                                             |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|--------------------------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)                      |   | April      3, 2010      |   |   | March      28, 2009 |   |   | Change |   |
| Interest      Income                             |   | $                       | 1,058  |   |                | $      | 3,209 |   |   |   | -67 | % |
| Other      Income (Expense), Net                 |   |                    | 1,560  |   |                |   | (1,437 | ) |   |   | 209 | % |
| Total      Interest Income and Other income, Net |   | $                       | 2,618  |   |                | $      | 1,772 |   |   |   | 48 | % |
| Percentage      of Net Sales                     |   |                    | 4      | %      |                |   | 2 | % |   |   |   |   |

----

| (Dollars      in thousands) |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|-----------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| Markets                     |   | March      28, 2009     |   |   | March      29, 2008 |   |   | Change |   |
| Medical      Electronics    |   | $                       | 33,368 |   |                |   | 43 | % |   | $ | 30,381 |   |   |   | 37 | % |   |   | 10 | % |
| LED      Lighting           |   |                    | 4,973  |   |                |   | 6 | % |   |   | 3,871 |   |   |   | 5 | % |   |   | 28 | % |
| Imaging                     |   |                    | 20,550 |   |                |   | 26 | % |   |   | 26,473 |   |   |   | 32 | % |   |   | -22 | % |
| Telecom                     |   |                    | 7,139  |   |                |   | 9 | % |   |   | 8,715 |   |   |   | 10 | % |   |   | -18 | % |
| Industrial/Other            |   |                    | 12,780 |   |                |   | 16 | % |   |   | 13,119 |   |   |   | 16 | % |   |   | -3 | % |
| Net      Sales              |   | $                       | 78,810 |   |                |   | 100 | % |   | $ | 82,559 |   |   |   | 100 | % |   |   | -5 | % |

----

|                        |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|-----------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands) |   | March      28, 2009     |   |   | March      29, 2008 |   |   | Change |   |
| China                       |   | $                       | 17,968 |   |                |   | 23 | % |   | $ | 18,903 |   |   |   | 23 | % |   |   | -5 | % |
| United      States          |   |                    | 29,301 |   |                |   | 37 | % |   |   | 30,162 |   |   |   | 37 | % |   |   | -3 | % |
| Asia      (excl. China)     |   |                    | 20,670 |   |                |   | 26 | % |   |   | 21,645 |   |   |   | 26 | % |   |   | -5 | % |
| Europe                      |   |                    | 10,093 |   |                |   | 13 | % |   |   | 11,005 |   |   |   | 13 | % |   |   | -8 | % |
| Other                       |   |                    | 778    |   |                |   | 1 | % |   |   | 844 |   |   |   | 1 | % |   |   | -8 | % |
| Total      Net Sales        |   | $                       | 78,810 |   |                |   | 100 | % |   | $ | 82,559 |   |   |   | 100 | % |   |   | -5 | % |

|                                                                               |   | Fiscal      Years Ended |   |
|------------------------------------------------------------------------------------|--------|-------------------------|--------|
| (Dollars      in thousands)                                                        |   | March      28, 2009     |   |   | March      29, 2008 |   |
| Gross      Margin Percentage                                                       |   |                    | 53     | % |   |   | 57 | % |
| Included      in Gross Margin Percentage Above                                     |   |                    |   |   |   |   |   |   |
| Gross      Margin Benefit from Cost of Previously Written Down Inventory      Sold |   | $                       | 1,372  |   |   | $ | 1,509 |   |
| Percentage      of Net Sales                                                       |   |                    | 1.7    | % |   |   | 1.8 | % |

|                               |   | Fiscal      Years Ended |   |   |                |   |
|------------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)        |   | March      28, 2009     |   |   | March      29, 2008 |   |   | Year-Over-Year      Change |   |
|  R&D      Expenses        |   | $                       | 14,553 |   |                | $      | 14,953 |   |   |   | -3 | % |
|  Percentage of Net      Sales |   |                    | 18     | %      |                |   | 18 | % |   |   |   |   |

----

|                         |   | Fiscal      Years Ended |   |   |                |   |
|------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)  |   | March      28, 2009     |   |   | March      29, 2008 |   |   | Year-Over-Year      Change |   |
| SG&A      Expenses       |   | $                       | 13,332 |   |                | $      | 15,536 |   |   |   | -14 | % |
| Percentage      of Net Sales |   |                    | 17     | %      |                |   | 19 | % |   |   |   |   |

|                                      |   | Fiscal      Years Ended |   |   | Year-Over-Year      |   |
|-------------------------------------------|--------|-------------------------|--------|--------|---------------------|--------|
| (Dollars      in thousands)               |   | March      28, 2009     |   |   | March      29, 2008 |   |   | Change |   |
| Interest      Income, Net                 |   | $                       | 3,209  |   |                | $      | 6,189 |   |   |   | -48 | % |
| Other      Income (expense), Net          |   |                    | (1,437 | )      |                |   | (201 | ) |   |   | 615 | % |
| Total      Interest and Other Income, Net |   | $                       | 1,772  |   |                | $      | 5,988 |   |   |   | -70 | % |
| Percentage      of Net Sales              |   |                    | 2      | %      |                |   | 7 | % |   |   |   |   |

----

|                                                      |   | Fiscal      Years Ended |    |
|-----------------------------------------------------------|--------|-------------------------|---------|
|                                                      |   | April      3, 2010      |    |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Net      cash provided by operating activities            |   | $                       | 8,541   |   |   | $ | 22,406 |   |   | $ | 15,912 |   |
| Net      cash (used in) provided by investing activities  |   |                    | (23,872 | ) |   |   | (17,792 | ) |   |   | 4,251 |   |
| Net      cash provided by (used in) financing activities  |   |                    | 1,240   |   |   |   | 1,728 |   |   |   | (24,913 | ) |
| Net      (decrease) increase in cash and cash equivalents |   | $                       | (14,091 | ) |   | $ | 6,342 |   |   | $ | (4,750 | ) |

----

| ·   | the      decline in market value is due to unusual general market      conditions; |
|--------------------|------------------------------------------------------------------------------------|

| ·   | these      investments are of high credit quality and a significant portion of them      are collateralized and are guaranteed by the US Department of      Education; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | there      have been no defaults on the ARS we held as of April 3,    2010; |
|--------------------|-----------------------------------------------------------------------------|

| ·   | their      AAA or Aaa credit ratings have not been reduced as of April 3,      2010; |
|--------------------|--------------------------------------------------------------------------------------|

| ·   | we      have the intent and ability to hold these investments until the      anticipated recovery in market value occurs;and |
|--------------------|------------------------------------------------------------------------------------------------------------------------------|

| ·   | recently,      some ARS were redeemed at par value. We received partial redemptions of      $12,150,000 at par value in fiscal 2009. During fiscal 2010 we received      payments totaling $19,250,000 representing 100% of two of our ARS holdings      and 46% and 12% of two other ARS holdings, respectively, all parts of      which were redeemed at par value. Subsequent to April 3, 2010, we      received two payments of $1,100,000 and $16,600,000, representing 7%      and 100%, respectively, of two ARS holdings, which were redeemed at      par value. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

| Contractual      Obligations                  |   | Total  |   |   | Less      than 1 Year |   |   | 1-2      Years |   |   | 2-3      Years |   |   | 3-4      Years |   |
|-----------------------------------------------|--------|--------|--------|--------|-----------------------|--------|--------|----------------|--------|--------|----------------|--------|--------|----------------|--------|
| Operating      lease obligations (1)      (2) |   | $      | 1,504  |   |                  | $      | 1,188  |           |   | $      | 234            |   |   | $              | 82     |   |   | $ | - |   |
| Purchase      obligations                     |   |   | 5,365  |   |                  |   | 5,061  |           |   |   | 290            |   |   |           | -      |   |   |   | 14 |   |
| Total      Contractual Cash Obligations       |   | $      | 6,869  |   |                  | $      | 6,249  |           |   | $      | 524            |   |   | $              | 82     |   |   | $ | 14 |   |

| (1) |  We      lease facilities under non-cancelable lease agreements expiring at various      times through April 2016.  Rental expense, net of sublease      income, amounted to $1,200,000 for fiscal 2010 compared to $1,151,000 for      the prior fiscal year. |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (2) | Amounts      exclude the obligation related to the recently negotiated lease extension      of our six-inch wafer fabrication facility, which was executed subsequent      to April 3, 2010. |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

----

|                                          |   | Fiscal      Quarters Ended                    |   |
|-----------------------------------------------|--------|-----------------------------------------------|--------|
|                                          |   | Apr      3,                                   |   |   | Dec      26, |   |   | Sep      26, |   |   | Jun      27, |   |   | Mar      28, |   |   | Dec      27, |   |   | Sep      27, |   |   | Jun      28, |   |
|                                          |   | 2010                                          |   |   | 2009 |   |   | 2009 |   |   | 2009 |   |   | 2009 |   |   | 2008 |   |   | 2008 |   |   | 2008 |   |
| (Unaudited)                                   |   | (in thousands, except per share      amounts) |   |
| Statement      of Income Data:                |   |                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net      sales                                |   | $                                             | 20,559 |   |   | $ | 16,735 |   |   | $ | 15,875 |   |   | $ | 13,555 |   |   | $ | 15,010 |   |   | $ | 17,596 |   |   | $ | 23,453 |   |   | $ | 22,751 |   |
| Costs      of sales                           |   |                                          | 11,106 |   |   |   | 8,717 |   |   |   | 8,474 |   |   |   | 6,425 |   |   |   | 8,691 |   |   |   | 8,076 |   |   |   | 10,164 |   |   |   | 10,000 |   |
| Gross      profit                             |   |                                          | 9,453  |   |   |   | 8,018 |   |   |   | 7,401 |   |   |   | 7,130 |   |   |   | 6,319 |   |   |   | 9,520 |   |   |   | 13,289 |   |   |   | 12,751 |   |
| Income      from operations                   |   |                                          | 1,706  |   |   |   | 1,078 |   |   |   | 639 |   |   |   | 335 |   |   |   | 593 |   |   |   | 2,896 |   |   |   | 5,587 |   |   |   | 4,918 |   |
| Income      before provision for income taxes |   |                                          | 2,180  |   |   |   | 1,583 |   |   |   | 1,492 |   |   |   | 1,121 |   |   |   | 820 |   |   |   | 2,752 |   |   |   | 6,301 |   |   |   | 5,893 |   |
| Net      income                               |   | $                                             | 1,163  |   |   | $ | 1,974 |   |   | $ | 1,083 |   |   | $ | 905 |   |   | $ | 944 |   |   | $ | 2,612 |   |   | $ | 4,549 |   |   | $ | 4,440 |   |
| Net      income per share(1)                  |   |                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Basic                                         |   | $                                             | 0.09   |   |   | $ | 0.15 |   |   | $ | 0.08 |   |   | $ | 0.07 |   |   | $ | 0.07 |   |   | $ | 0.20 |   |   | $ | 0.35 |   |   | $ | 0.35 |   |
| Diluted                                       |   | $                                             | 0.09   |   |   | $ | 0.15 |   |   | $ | 0.08 |   |   | $ | 0.07 |   |   | $ | 0.07 |   |   | $ | 0.20 |   |   | $ | 0.35 |   |   | $ | 0.34 |   |

----

----

----

----

| Item      15.   Exhibits and Financial Statement      Schedules |                                                         |
|--------------------------------------------------------------------------------|--------------------------------------------------------------|
|                                                                           |                                                         |   |   |
| (a)                                                                            | The      following documents are filed as part of this form: |   |
|                                                                           |                                                         |   | Page |
| 1.                                                                             | Report      of Independent Registered Public Accounting Firm | 43 |
|                                                                           |                                                         |   |   |
| 2.                                                                             | Consolidated      Financial Statements:                      |   |
|                                                                           |                                                         | Consolidated      Balance Sheets as of April 3, 2010 and March 28, 2009 | 44 |
|                                                                           |                                                         | For      the three years ended April 3, 2010, March 28, 2009 and March 29,      2008: |   |
|                                                                           |                                                         | Consolidated      Statements of Income | 45 |
|                                                                           |                                                         | Consolidated      Statements of Shareholders' Equity | 46 |
|                                                                           |                                                         | Consolidated      Statements of Cash Flows | 47 |
|                                                                           |                                                         | Notes      to Consolidated Financial Statements | 48 |

| 3.       | Exhibits.                  |
|----------|----------------------------|
|     |                       |   |
| 3.  | Exhibit                    | Exhibit Description |
|     |                       |   |
|     | 3.1                        | Restated      Articles of Incorporation of Registrant filed May 21,  1980. |
|     |                       |   |
|     | 3.2                        | Certificate      of Amendment of Articles of Incorporation filed April 16,      1981. |
|     |                       |   |
|     | 3.3                        | Certificate      of Amendment of Articles of Incorporation filed September 30,      1983. |
|     |                       |   |
|     | 3.4                        | Certificate      of Amendment of Articles of Incorporation filed October 14,      1988. |
|     |                       |   |
|     | 3.5      (1)               | Amended      and Restated Bylaws of Registrant. |
|     |                       |   |
|     | 10.1      *                | Non-Qualified      Deferred Compensation Plan, which became effective January 1, 1996, as      most recently amended on December 1, 2008. |
|     |                       |   |
|     | 10.2                       | Lease  71      Vista Montana, San Jose, California, comprised of a lease dated December      7, 1988, and five amendments (5/4/89; 6/18/90; 12/21/95; 2/1/95; and      1/223/04) and two assignments (11/15/96 and 2/1/99)      with  Sobrato Development Companies #871, as landlord, and      Supertex, Inc., as assignee/tenant. |
|     |                       |   |
|     | 10.3(2)                    | Sixth      Amendment to Lease of 71 Vista Montana, San Jose, California dated April      16, 2010. |
|     |                       |   |
|     | 10.4                       | Leases      of Hong Kong Facility dated 5/16/08, 9/11/09, and 9/11/09 with Jing Wah      Garments Mfg. Co. Ltd. |
|     |                       |   |
|     | 10.5      (3)*   | 2000      Employee Stock Purchase Plan. |
|     |                       |   |
|     | 10.6      (4)*             | 2001      Stock Option Plan. |
|     |                       |   |
|     | 10.7      (5)*             | 2009      Equity Incentive Plan. |
|     |                       |   |
|     | 10.8*                      | Profit      Sharing Bonus Incentive Plan. |

----

|      |                                                                                                                          |                                                                                                                                                                                                                      |
|-----------|-------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      | 21.1                                                                                                                          | Subsidiary      of the Registrant.                                                                                                                                                                                        |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 23.1                                                    | Consent      of PricewaterhouseCoopers LLP, Independent Registered Public Accounting      Firm.                                                                                                                           |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 24.1                                                                                                                          | Power      of Attorney (See signature page).                                                                                                                                                                              |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 31.1                                                                                                                          | Certification      of Chief Executive Officer pursuant to Securities Exchange Act Rules      13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the      Sarbanes-Oxley Act of 2002.                          |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 31.2                                                                                                                          | Certification      of Chief Financial Officer pursuant to Securities Exchange Act Rules      13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the      Sarbanes-Oxley Act of 2002.                          |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 32.1                                                                                                                          | Certification      of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted      pursuant to Section 906 of the Sarbanes-Oxley Act of  2002.                                                             |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | 32.2                                                                                                                          | Certification      of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted      pursuant to Section 906 of the Sarbanes-Oxley Act of  2002.                                                             |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | (1)                                                                                                                           | Exhibit      3.6 to Registrant’s Current Report on Form 8-K dated December 21, 2007,      filed with the SEC on December 28, 2007, is hereby incorporated by      reference.                                        |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | (2)                                                                                                                           | Exhibit      10.9 to Registrant’s Current Report on Form 8-K dated April 16, 2010,      filed with the SEC on April 22, 2010 is hereby incorporated by      reference.                                              |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | (3)                                                                                                                           | Exhibit      4.1 to Registrant's  Registration Statement on Form S-8 (File      No. 333-47606) which was filed with the SEC and became effective on      October 10, 2000, is hereby incorporated by reference. |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | (4)                                                                                                                           | Appendix      B of Registrant’s amended Proxy Statement on Schedule 14A filed on August      7, 2001 (File No. 000-12718) is hereby incorporated by      reference.                                            |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | (5)                                                                                                                           | Appendix      1 of Registrant’s Proxy Statement on Schedule 14A filed on July 2, 2009      (File No. 000-12718) is hereby incorporated by      reference.                                                      |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
|      | *                                                                                                                             | Denotes      a management contract or compensatory plan or  arrangement.                                                                                                                                                  |
|      |                                                                                                                          |                                                                                                                                                                                                                      |
| (b)  | Exhibits      3.1, 3.2, 3.3, 3.4, 10.1,10.2, 10.4, 10.8, 21.1, 23.1, 24.1, 31.1, 31.2,      32.1 and 32.2 are filed herewith. |

----

|                                 |   | Supertex,      Inc. |
|--------------------------------------|--------|---------------------|
|                                 |   |                |   |
|                                 |   |                |   |
| Dated:  June      10, 2010 |   |                | /s/PHILLIP A. KAGEL |
|                                 |   |                | Phillip      A. Kagel |
|                                 |   |                | Vice      President, Finance and Chief Financial Officer |
|                                 |   |                | (Principal      Financial and Accounting Officer) |

| Signature                  |   | Title                                                           |   | Date               |
|----------------------------|--------|-----------------------------------------------------------------|--------|--------------------|
|                       |   |                                                            |   |               |
| /s/ HENRY C. PAO           |   | Director,      President and Chief Executive Officer            |   | June      10, 2010 |
| (Henry      C. Pao)        |   | (Principle      Executive Officer)                              |   |               |
|                       |   |                                                            |   |               |
| /s/ PHILLIP A. KAGEL       |   | Vice      President, Finance and Chief Financial Officer        |   | June      10, 2010 |
| (Phillip      A. Kagel)    |   | (Principal      Financial and Accounting Officer)               |   |               |
|                       |   |                                                            |   |               |
| /s/ BENEDICT C. K. CHOY    |   | Director      and Senior Vice President, Technology Development |   | June      10, 2010 |
| (Benedict      C. K. Choy) |   |                                                            |   |               |
|                       |   |                                                            |   |               |
| /s/ W. MARK LOVELESS       |   | Director                                                        |   | June      10, 2010 |
| (W.      Mark Loveless)    |   |                                                            |   |               |
|                       |   |                                                            |   |               |
| /s/ ELLIOTT SCHLAM         |   | Director                                                        |   | June      10, 2010 |
| (Elliott      Schlam)      |   |                                                            |   |               |
|                       |   |                                                            |   |               |
| /s/ MILTON FENG            |   | Director                                                        |   | June      10, 2010 |
| (Milton      Feng)         |   |                                                            |   |               |
|                       |   |                                                            |   |               |

----

----

|                                                                                                                                                                   |   | April      3, 2010 |    |   | March      28, 2009 |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|---------|--------|---------------------|--------|
| ASSETS                                                                                                                                                                 |   |               |    |   |                |   |
| Current      Assets:                                                                                                                                                   |   |               |    |   |                |   |
| Cash      and cash equivalents                                                                                                                                         |   | $                  | 10,153  |   |                | $      | 24,244 |   |
| Short-term      investments                                                                                                                                            |   |               | 76,860  |   |                |   | 33,294 |   |
| Trade      accounts receivable, net                                                                                                                                    |   |               | 10,786  |   |                |   | 8,115 |   |
| Inventories                                                                                                                                                            |   |               | 15,450  |   |                |   | 15,700 |   |
| Prepaid      expenses and other current assets                                                                                                                         |   |               | 3,726   |   |                |   | 1,654 |   |
| Prepaid      income taxes                                                                                                                                              |   |               | 2,456   |   |                |   | 4,588 |   |
| Deferred      income taxes                                                                                                                                             |   |               | 8,162   |   |                |   | 7,625 |   |
| Total      current assets                                                                                                                                              |   |               | 127,593 |   |                |   | 95,220 |   |
| Long-term      investments                                                                                                                                             |   |               | 65,000  |   |                |   | 79,496 |   |
| Property,      plant and equipment, net                                                                                                                                |   |               | 6,791   |   |                |   | 8,473 |   |
| Other      assets                                                                                                                                                      |   |               | 580     |   |                |   | 389 |   |
| Deferred      income taxes                                                                                                                                             |   |               | 5,254   |   |                |   | 6,726 |   |
| Total      assets                                                                                                                                                      |   | $                  | 205,218 |   |                | $      | 190,304 |   |
|                                                                                                                                                                   |   |               |    |   |                |   |   |   |
|                                                                                                                                                                   |   |               |    |   |                |   |   |   |
| LIABILITIES      AND SHAREHOLDERS’ EQUITY                                                                                                                        |   |               |    |   |                |   |   |   |
| Current      Liabilities:                                                                                                                                              |   |               |    |   |                |   |   |   |
| Trade      accounts payable                                                                                                                                            |   | $                  | 3,748   |   |                | $      | 2,934 |   |
| Accrued      salaries and employee benefits                                                                                                                            |   |               | 11,430  |   |                |   | 8,909 |   |
| Other      accrued liabilities                                                                                                                                         |   |               | 1,167   |   |                |   | 888 |   |
| Deferred      revenue                                                                                                                                                  |   |               | 3,962   |   |                |   | 3,276 |   |
| Income      taxes payable                                                                                                                                              |   |               | 15      |   |                |   | 1,882 |   |
| Total      current liabilities                                                                                                                                         |   |               | 20,322  |   |                |   | 17,889 |   |
| Income      taxes payable, noncurrent                                                                                                                                  |   |               | 4,520   |   |                |   | 4,839 |   |
| Total      liabilities                                                                                                                                                 |   |               | 24,842  |   |                |   | 22,728 |   |
|                                                                                                                                                                   |   |               |    |   |                |   |   |   |
| Commitments      and contingencies (Note 14)                                                                                                                           |   |               |    |   |                |   |   |   |
|                                                                                                                                                                   |   |               |    |   |                |   |   |   |
| Shareholders’      equity:                                                                                                                                       |   |               |    |   |                |   |   |   |
| Preferred      stock, no par value -- 10,000 shares authorized, none      issued and outstanding                                                                       |   |               | -       |   |                |   | - |   |
| Common      stock, no par value -- 30,000 shares authorized;      issued and outstanding 12,944 shares as of April 3, 2010 and 12,872 shares      as of March 28, 2009 |   |               | 64,296  |   |                |   | 59,549 |   |
| Accumulated      other comprehensive loss                                                                                                                              |   |               | (2,566  | )      |                |   | (5,494 | ) |
| Retained      earnings                                                                                                                                                 |   |               | 118,646 |   |                |   | 113,521 |   |
| Total      shareholders' equity                                                                                                                                        |   |               | 180,376 |   |                |   | 167,576 |   |
| Total      liabilities and shareholders' equity                                                                                                                        |   | $                  | 205,218 |   |                | $      | 190,304 |   |

----

|                                          |   | Fiscal      Years Ended |   |
|-----------------------------------------------|--------|-------------------------|--------|
|                                          |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Net      sales                                |   | $                       | 66,724 |   |   | $ | 78,810 |   |   | $ | 82,559 |   |
| Cost      and expenses:                       |   |                    |   |   |   |   |   |   |   |   |   |   |
| Cost      of sales                            |   |                    | 34,722 |   |   |   | 36,931 |   |   |   | 35,578 |   |
| Research      and development                 |   |                    | 15,404 |   |   |   | 14,553 |   |   |   | 14,953 |   |
| Selling,      general and administrative      |   |                    | 12,840 |   |   |   | 13,332 |   |   |   | 15,536 |   |
| Total      costs and expenses                 |   |                    | 62,966 |   |   |   | 64,816 |   |   |   | 66,067 |   |
| Income      from operations                   |   |                    | 3,758  |   |   |   | 13,994 |   |   |   | 16,492 |   |
| Interest      and other income:               |   |                    |   |   |   |   |   |   |   |   |   |   |
| Interest      income                          |   |                    | 1,058  |   |   |   | 3,209 |   |   |   | 6,189 |   |
| Other      income(expense), net               |   |                    | 1,560  |   |   |   | (1,437 | ) |   |   | (201 | ) |
| Income      before provision for income taxes |   |                    | 6,376  |   |   |   | 15,766 |   |   |   | 22,480 |   |
| Provision      for income taxes               |   |                    | 1,251  |   |   |   | 3,221 |   |   |   | 5,475 |   |
| Net      income                               |   | $                       | 5,125  |   |   | $ | 12,545 |   |   | $ | 17,005 |   |
|                                          |   |                    |   |   |   |   |   |   |   |   |   |   |
| Net      income per share                     |   |                    |   |   |   |   |   |   |   |   |   |   |
| Basic                                         |   | $                       | 0.40   |   |   | $ | 0.98 |   |   | $ | 1.25 |   |
| Diluted                                       |   | $                       | 0.39   |   |   | $ | 0.97 |   |   | $ | 1.23 |   |
| Shares      used in per share computation     |   |                    |   |   |   |   |   |   |   |   |   |   |
| Basic                                         |   |                    | 12,912 |   |   |   | 12,836 |   |   |   | 13,585 |   |
| Diluted                                       |   |                    | 12,995 |   |   |   | 12,927 |   |   |   | 13,790 |   |

----

|                                                                   |   | Number      of Common Shares |   |   | Stock      Amount |   |   | Accumulated      Other Comprehensive Loss |   |   | Retained      Earnings |   |   | Share-holders’      Equity |    |   | Comprehensive      Income |   |
|------------------------------------------------------------------------|--------|------------------------------|--------|--------|-------------------|--------|--------|-------------------------------------------|--------|--------|------------------------|--------|--------|----------------------------------|---------|--------|---------------------------|--------|
|                                                                   |   |                         |   |   |              |   |   |                                      |   |   |                   |   |   |                             |    |   |                      |   |
| Balance,      March 31, 2007                                           |   |                         | 13,794 |   |              | $      | 54,741 |                                      |   | $      | -                      |   |   | $                                | 106,511 |   |                      | $      | 161,252 |   |   |   |   |
| Stock      options exercised                                           |   |                         | 123    |   |              |   | 2,041  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 2,041 |   |   |   |   |
| Issuance      of shares under ESPP                                     |   |                         | 5      |   |              |   | 179    |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 179 |   |   |   |   |
| Stock      repurchased                                                 |   |                         | (1,173 | )      |              |   | (4,924 | )                                         |   |   | -                      |   |   |                             | (22,447 | )      |                      |   | (27,371 | ) |   |   |   |
| Stock-based      compensation expense                                  |   |                         | -      |   |              |   | 2,545  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 2,545 |   |   |   |   |
| Excess      income tax benefit from stock-based compensation plans     |   |                         | -      |   |              |   | 386    |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 386 |   |   |   |   |
| Adjustment      to retained earnings upon adoption of FIN 48           |   |                         | -      |   |              |   | -      |                                      |   |   |  -                |   |   |                             | (93     | )      |                      |   | (93 | ) |   |   |   |
| Net      income                                                        |   |                         | -      |   |              |   | -      |                                      |   |   | -                      |   |   |                             | 17,005  |   |                      |   | 17,005 |   |   |   | 17,005 |   |
| Unrealized      loss from available-for-sale investments               |   |                         | -      |   |              |   | -      |                                      |   |   | (4,069                 | )      |   |                             | -       |   |                      |   | (4,069 | ) |   |   | (4,069 | ) |
| Balance,      March 29, 2008                                           |   |                         | 12,749 |   |              |   | 54,968 |                                      |   |   | (4,069                 | )      |   |                             | 100,976 |   |                      |   | 151,875 |   |   |   | 12,936 |   |
| Stock      options exercised                                           |   |                         | 115    |   |              |   | 1,504  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 1,504 |   |   |   |   |   |
| Issuance      of shares under ESPP                                     |   |                         | 8      |   |              |   | 167    |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 167 |   |   |   |   |   |
| Stock-based      compensation expense                                  |   |                         | -      |   |              |   | 2,761  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 2,761 |   |   |   |   |   |
| Excess      income tax benefit from stock-based compensation plans     |   |                         | -      |   |              |   | 149    |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 149 |   |   |   |   |   |
| Net      income                                                        |   |                         | -      |   |              |   | -      |                                      |   |   | -                      |   |   |                             | 12,545  |   |                      |   | 12,545 |   |   |   | 12,545 |   |
| Unrealized      loss from available-for-sale investments, net of taxes |   |                         | -      |   |              |   | -      |                                      |   |   | (1,425                 | )      |   |                             | -       |   |                      |   | (1,425 | ) |   |   | (1,425 | ) |
| Balance,      March 28, 2009                                           |   |                         | 12,872 |   |              |   | 59,549 |                                      |   |   | (5,494                 | )      |   |                             | 113,521 |   |                      |   | 167,576 |   |   |   | 11,120 |   |
| Stock      options exercised                                           |   |                         | 66     |   |              |   | 1,060  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 1,060 |   |   |   |   |   |
| Issuance      of shares under ESPP                                     |   |                         | 6      |   |              |   | 154    |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 154 |   |   |   |   |   |
| Stock-based      compensation expense                                  |   |                         | -      |   |              |   | 3,470  |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 3,470 |   |   |   |   |   |
| Excess      tax benefit from stock-based compensation plans            |   |                         | -      |   |              |   | 63     |                                      |   |   | -                      |   |   |                             | -       |   |                      |   | 63 |   |   |   |   |   |
| Net      income                                                        |   |                         | -      |   |              |   | -      |                                      |   |   | -                      |   |   |                             | 5,125   |   |                      |   | 5,125 |   |   |   | 5,125 |   |
| Unrealized      loss from available-for-sale investments, net of taxes |   |                         | -      |   |              |   | -      |                                      |   |   | 2,928                  |   |   |                             | -       |   |                      |   | 2,928 |   |   |   | 2,928 |   |
| Balance,      April 3, 2010                                            |   |                         | 12,944 |   |              | $      | 64,296 |                                      |   | $      | (2,566                 | )      |   | $                                | 118,646 |   |                      | $      | 180,376 |   |   | $ | 8,053 |   |

----

|                                                                                                   |   | Fiscal      Years Ended |    |
|--------------------------------------------------------------------------------------------------------|--------|-------------------------|---------|
| CASH      FLOWS FROM OPERATING ACTIVITIES                                                              |   | April      3, 2010      |    |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Net      income                                                                                        |   | $                       | 5,125   |   |   | $ | 12,545 |   |   | $ | 17,005 |   |
| Non-cash      adjustments to net income:                                                               |   |                    |    |   |   |   |   |   |   |   |   |   |
| Depreciation      and amortization                                                                     |   |                    | 2,952   |   |   |   | 3,397 |   |   |   | 3,206 |   |
| Provision      for doubtful accounts and sales returns                                                 |   |                    | 488     |   |   |   | 646 |   |   |   | 1,151 |   |
| Provision      for excess and obsolete inventories                                                     |   |                    | 3,448   |   |   |   | 2,322 |   |   |   | 3,217 |   |
| Deferred      income taxes                                                                             |   |                    | (929    | ) |   |   | 1,071 |   |   |   | (2,900 | ) |
| Stock-based      compensation                                                                          |   |                    | 3,470   |   |   |   | 2,761 |   |   |   | 2,545 |   |
| Tax      benefit related to stock-based compensation plans                                             |   |                    | 63      |   |   |   | 149 |   |   |   | 386 |   |
| Excess      tax benefit related to stock-based compensation                                            |   |                    | (26     | ) |   |   | (57 | ) |   |   | (238 | ) |
| Unrealized      (gain) loss from short-term investments, categorized as      trading                   |   |                    | (1,607  | ) |   |   | 1,464 |   |   |   | 374 |   |
| (Gain)      loss on disposal of property, plant and equipment                                          |   |                    | 5       |   |   |   | 23 |   |   |   | (201 | ) |
| Changes      in operating assets and liabilities:                                                      |   |                    |    |   |   |   |   |   |   |   |   |   |
| Trade      accounts receivable                                                                         |   |                    | (3,183  | ) |   |   | 4,546 |   |   |   | (1,555 | ) |
| Inventories                                                                                            |   |                    | (3,198  | ) |   |   | (986 | ) |   |   | (6,015 | ) |
| Prepaid      expenses and other assets                                                                 |   |                    | (2,239  | ) |   |   | 1,867 |   |   |   | (1,708 | ) |
| Prepaid      income taxes                                                                              |   |                    | 2,132   |   |   |   | (4,588 | ) |   |   | - |   |
| Trade      accounts payable and accrued expenses                                                       |   |                    | 3,540   |   |   |   | (4,442 | ) |   |   | (1,288 | ) |
| Deferred      revenue                                                                                  |   |                    | 686     |   |   |   | (1,073 | ) |   |   | 1,384 |   |
| Income      taxes payable                                                                              |   |                    | (2,186  | ) |   |   | 2,761 |   |   |   | 549 |   |
| Net      cash provided by operating activities                                                         |   |                    | 8,541   |   |   |   | 22,406 |   |   |   | 15,912 |   |
| CASH      FLOWS FROM INVESTING ACTIVITIES                                                              |   |                    |    |   |   |   |   |   |   |   |   |   |
| Purchases      of property, plant and equipment, net                                                   |   |                    | (1,201  | ) |   |   | (1,971 | ) |   |   | (4,413 | ) |
| Proceeds      from disposal of property, plant and equipment                                           |   |                    | -       |   |   |   | - |   |   |   | 201 |   |
| Purchases      of investments                                                                          |   |                    | (86,233 | ) |   |   | (34,529 | ) |   |   | (138,274 | ) |
| Sales      of investments                                                                              |   |                    | 11,143  |   |   |   | 6,558 |   |   |   | 146,737 |   |
| Maturities      of investments                                                                         |   |                    | 52,419  |   |   |   | 12,150 |   |   |   | - |   |
| Net      cash (used in) provided by investing activities                                               |   |                    | (23,872 | ) |   |   | (17,792 | ) |   |   | 4,251 |   |
| CASH      FLOWS FROM FINANCING ACTIVITIES                                                              |   |                    |    |   |   |   |   |   |   |   |   |   |
| Proceeds      from exercise of stock options and employee stock purchase      plan                     |   |                    | 1,214   |   |   |   | 1,671 |   |   |   | 2,220 |   |
| Stock      repurchased                                                                                 |   |                    | -       |   |   |   | - |   |   |   | (27,371 | ) |
| Excess      tax benefit related to stock-based compensation                                            |   |                    | 26      |   |   |   | 57 |   |   |   | 238 |   |
| Net      cash provided by (used in) financing activities                                               |   |                    | 1,240   |   |   |   | 1,728 |   |   |   | (24,913 | ) |
| NET      (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS                                              |   |                    | (14,091 | ) |   |   | 6,342 |   |   |   | (4,750 | ) |
|                                                                                                   |   |                    |    |   |   |   |   |   |   |   |   |   |
| CASH      AND CASH EQUIVALENTS:                                                                        |   |                    |    |   |   |   |   |   |   |   |   |   |
| Beginning      of period                                                                               |   |                    | 24,244  |   |   |   | 17,902 |   |   |   | 22,652 |   |
| End      of period                                                                                     |   | $                       | 10,153  |   |   | $ | 24,244 |   |   | $ | 17,902 |   |
|                                                                                                   |   |                    |    |   |   |   |   |   |   |   |   |   |
| Supplemental      cash flow disclosures:                                                               |   |                    |    |   |   |   |   |   |   |   |   |   |
| Income      taxes paid, net of refunds                                                                 |   | $                       | 3,479   |   |   | $ | 2,985 |   |   | $ | 8,367 |   |
|                                                                                                   |   |                    |    |   |   |   |   |   |   |   |   |   |
| Supplemental      disclosure of non-cash activities:                                                   |   |                    |    |   |   |   |   |   |   |   |   |   |
| Additions      to property, plant and equipment included in accounts payable and accrued      expenses |   | $                       | 74      |   |   | $ | 6 |   |   | $ | 58 |   |

----

----

----

----

----

----

----

----

----

|                                      |   | April      3, 2010           |   |
|-------------------------------------------|--------|------------------------------|--------|
|                                      |   | Fair      value measurements |   |
| Assets                                    |   | Level      1                 |   |   | Level      2 |   |   | Level      3 |   |   | Total |   |
| Money      market funds                   |   | $                            | -      |   |   | $ | 7,341 |   |   | $ | - |   |   | $ | 7,341 |   |
| Municipal      bonds                      |   |                         | -      |   |   |   | 69,390 |   |   |   | - |   |   |   | 69,390 |   |
| Equity      mutual funds related to NQDCP |   |                         | 7,470  |   |   |   | - |   |   |   | - |   |   |   | 7,470 |   |
| Long-term      investments in ARS         |   |                         | -      |   |   |   | - |   |   |   | 65,000 |   |   |   | 65,000 |   |
| Total      assets at fair value           |   | $                            | 7,470  |   |   | $ | 76,731 |   |   | $ | 65,000 |   |   | $ | 149,201 |   |
|                                      |   |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Liabilities                               |   |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Obligation      related to NQDCP          |   | $                            | 7,470  |   |   | $ | - |   |   | $ | - |   |   | $ | 7,470 |   |

|                                      |   | March      28, 2009          |   |
|-------------------------------------------|--------|------------------------------|--------|
|                                      |   | Fair      value measurements |   |
| Assets                                    |   | Level      1                 |   |   | Level      2 |   |   |   | Level      3 |   |   | Total |   |
| Money      market funds                   |   | $                            | -      |   |   | $ | 18,382 |   |   |   | $ | - |   |   | $ | 18,382 |   |
| Municipal      bonds                      |   |                         | -      |   |   |   | 21,077 |  (1) |   |   |   | - |   |   |   | 21,077 |   |
| Variable      rate demand notes           |   |                         | -      |   |   |   | 1,000 |   |   |   |   | - |   |   |   | 1,000 |   |
| Corporate      bonds                      |   |                         | -      |   |   |   | 6,557 |  (2) |   |   |   | - |   |   |   | 6,557 |   |
| Commercial      paper                     |   |                         | -      |   |   |   | 992 |   |   |   |   | - |   |   |   | 992 |   |
| Equity      mutual funds related to NQDCP |   |                         | 5,513  |   |   |   | - |   |   |   |   | - |   |   |   | 5,513 |   |
| Short-term      investment in ARS         |   |                         | -      |   |   |   | 50 |   |   |   |   | - |   |   |   | 50 |   |
| Long-term      investments in ARS         |   |                         | -      |   |   |   | - |   |   |   |   | 79,496 |   |   |   | 79,496 |   |
| Total      assets at fair value           |   | $                            | 5,513  |   |   | $ | 48,058 |   |   |   | $ | 79,496 |   |   | $ | 133,067 |   |
|                                      |   |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Liabilities                               |   |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Obligation      related to NQDCP          |   | $                            | 5,513  |   |   | $ | - |   |   |   | $ | - |   |   | $ | 5,513 |   |

----

| Fair      value measurements of assets using level 3 inputs             |   | Long-term      investments in ARS |    |
|-------------------------------------------------------------------------|--------|-----------------------------------|---------|
| Beginning      balance at March 28, 2009                                |   | $                                 | 79,496  |   |
| Redemption      of investments in ARS                                   |   |                              | (19,200 | ) |
| Unrealized      loss reversed in "Accumulated other comprehensive loss" |   |                              | 4,704   |   |
| Ending      balance at April 3, 2010                                    |   | $                                 | 65,000  |   |

|                                 |   | April      3, 2010 |   |   | March      28, 2009 |   |
|--------------------------------------|--------|--------------------|--------|--------|---------------------|--------|
| Cash                                 |   | $                  | 2,812  |   |                | $      | 3,967 |   |
| Cash      equivalents:               |   |               |   |   |                |   |   |   |
| Money      market funds              |   |               | 7,341  |   |                |   | 18,382 |   |
| Municipal      bonds                 |   |               | -      |   |                |   | 1,635 |   |
| Corporate      bonds                 |   |               | -      |   |                |   | 260 |   |
| Total      cash and cash equivalents |   | $                  | 10,153 |   |                | $      | 24,244 |   |

|                                |   | April      3, 2010 |   |
|-------------------------------------|--------|--------------------|--------|
|                                |   | Amortized          |   |   | Unrealized |   |   | Unrealized |   |   | Carrying |   |
|                                |   | Cost               |   |   | Gain |   |   | Loss |   |   | Value |   |
|                                |   |               |   |   |   |   |   |   |   |   |   |   |
| Short-term      investments:        |   |               |   |   |   |   |   |   |   |   |   |   |
| Trading      securities:            |   | $                  | 7,470  |   |   | $ | - |   |   | $ | - |   |   | $ | 7,470 |   |
| Available-for-sale      securities: |   |               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Municipal  bonds          |   |               | 69,393 |   |   |   | - |   |   |   | (3 | ) |   |   | 69,390 |   |
| Total      short-term investments   |   | $                  | 76,863 |   |   | $ | - |   |   | $ | (3 | ) |   | $ | 76,860 |   |
|                                |   |               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Long-term      investments:         |   |               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Available-for      sale securities  |   | $                  | 69,200 |   |   | $ | - |   |   | $ | (4,200 | ) |   | $ | 65,000 |   |

----

|                                |   | March      28, 2009 |   |
|-------------------------------------|--------|---------------------|--------|
|                                |   | Amortized           |   |   | Unrealized |   |   | Unrealized |   |   | Carrying |   |
|                                |   | Cost                |   |   | Gain |   |   | Loss |   |   | Value |   |
|                                |   |                |   |   |   |   |   |   |   |   |   |   |
| Short-term      investments:        |   |                |   |   |   |   |   |   |   |   |   |   |
| Trading      securities:            |   | $                   | 5,513  |   |   | $ | - |   |   | $ | - |   |   | $ | 5,513 |   |
| Available-for-sale      securities: |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Auction      rate securities        |   |                | 50     |   |   |   | - |   |   |   | - |   |   |   | 50 |   |
| Municipal  bonds          |   |                | 19,438 |   |   |   | 4 |   |   |   | - |   |   |   | 19,442 |   |
| Variable      rate demand notes     |   | $                   | 1,000  |   |   |   | - |   |   |   | - |   |   |   | 1,000 |   |
| Corporate      bonds                |   |                | 6,393  |   |   |   | - |   |   |   | (96 | ) |   |   | 6,297 |   |
| Commercial      Paper               |   |                | 990    |   |   |   | 2 |   |   |   | - |   |   |   | 992 |   |
| Total      short-term investments   |   | $                   | 33,384 |   |   | $ | 6 |   |   | $ | (96 | ) |   | $ | 33,294 |   |
|                                |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Long-term      investments:         |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Available-for      sale securities  |   | $                   | 88,400 |   |   | $ | - |   |   | $ | (8,904 | ) |   | $ | 79,496 |   |

|                                                  |   | April      3, 2010 |   |   | March      28, 2009 |   |
|-------------------------------------------------------|--------|--------------------|--------|--------|---------------------|--------|
| Short-term      investment:                           |   |               |   |   |                |   |
| Trading      securities:                              |   |               |   |   |                |   |
|    Due      in one year or less        |   | $                  | 7,470  |   |                | $      | 5,513 |   |
| Available-for-sale      securities:                   |   |               |   |   |                |   |   |   |
| Due      in one year or less                          |   |               | 69,390 |   |                |   | 26,731 |   |
| Due      after ten years                              |   |               | -      |   |                |   | 1,050 |   |
| Total      short-term investments                     |   | $                  | 76,860 |   |                | $      | 33,294 |   |
| Long-term      investment:                            |   |               |   |   |                |   |   |   |
| Available-for-sale      securities at amortized cost: |   |               |   |   |                |   |   |   |
| Due      after ten years                              |   | $                  | 65,000 |   |                | $      | 79,496 |   |
| Total      long-term investments                      |   | $                  | 65,000 |   |                | $      | 79,496 |   |

----

| ·   | the      decline in market value is due to unusual general market      conditions; |
|--------------------|------------------------------------------------------------------------------------|

| ·   | these      investments are of high credit quality and a significant portion of them      are collaterized and are guaranteed by the US Department of      Education; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | as      of April 3, 2010, there have been no defaults on the ARS held by the      Company; |
|--------------------|--------------------------------------------------------------------------------------------|

| ·   | their      AAA or Aaa credit ratings have not been reduced as of April 3,      2010; |
|--------------------|--------------------------------------------------------------------------------------|

| ·   | the      Company has the intent and ability to hold these investments until the      anticipated recovery in market value occurs;and |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------|

| ·   | recently,      some ARS were redeemed at par value. The Company received partial      redemptions of $12,150,000 at par value in fiscal 2009. During fiscal 2010      the Company received payments totaling $19,250,000 representing 100% of      two of its ARS holdings and 46% and 12% of two other ARS holdings,      respectively, all parts of which were redeemed at par value. Subsequent to      April 3, 2010, the Company received      two payments of $1,100,000 and $16,600,000, representing 7% and 100%,      respectively, of two ARS holding, which were redeemed at par      value. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                         |   | April      3, 2010 |   |   | March      28, 2009 |   |
|--------------------------------------------------------------|--------|--------------------|--------|--------|---------------------|--------|
| Accounts      receivable                                     |   | $                  | 11,245 |   |                | $      | 8,876 |   |
| Less:      Allowance for doubtful accounts and sales returns |   |               | (459   | )      |                |   | (761 | ) |
| Total      trade accounts receivable, net                    |   | $                  | 10,786 |   |                | $      | 8,115 |   |

----

| Description                             |   | Balance      at Beginning of Period |   |   | Additions      Charged to Expense |   |   | Deductions      and Other(1) |   |   | Balance      at End of Period |   |
|-----------------------------------------|--------|-------------------------------------|--------|--------|-----------------------------------|--------|--------|------------------------------|--------|--------|-------------------------------|--------|
| Twelve      months ended April 3, 2010  |   | $                                   | 495    |   |                              | $      | 57     |                         |   | $      | (310                          | )      |   | $ | 242 |   |
| Twelve      months ended March 28, 2009 |   | $                                   | 595    |   |                              | $      | (100   | )                            |   | $      | -                             |   |   | $ | 495 |   |
| Twelve      months ended March 29, 2008 |   | $                                   | 590    |   |                              | $      | 5      |                         |   | $      | -                             |   |   | $ | 595 |   |

| Description                             |   | Balance      at Beginning of Period |   |   | Additions      Charged to Revenue |   |   | Deductions      and Other(1) |   |   | Balance      at End of Period |   |
|-----------------------------------------|--------|-------------------------------------|--------|--------|-----------------------------------|--------|--------|------------------------------|--------|--------|-------------------------------|--------|
| Twelve      months ended April 3, 2010  |   | $                                   | 266    |   |                              | $      | 454    |                         |   | $      | (503                          | )      |   | $ | 217 |   |
| Twelve      months ended March 28, 2009 |   | $                                   | 483    |   |                              | $      | 636    |                         |   | $      | (853                          | )      |   | $ | 266 |   |
| Twelve      months ended March 29, 2008 |   | $                                   | 199    |   |                              | $      | 1,146  |                         |   | $      | (862                          | )      |   | $ | 483 |   |

|                                                   |   | April      3, 2010 |   |   | March      28, 2009 |   |
|--------------------------------------------------------|--------|--------------------|--------|--------|---------------------|--------|
| Raw      materials                                     |   | $                  | 1,221  |   |                | $      | 1,128 |   |
| Work-in-process                                        |   |               | 9,978  |   |                |   | 10,449 |   |
| Finished      goods                                    |   |               | 2,229  |   |                |   | 2,470 |   |
| Finished      goods at distributors and on consignment |   |               | 2,022  |   |                |   | 1,653 |   |
| Total      Inventories                                 |   | $                  | 15,450 |   |                | $      | 15,700 |   |

----

|                                                |   | April      3, 2010 |    |   | March      28, 2009 |   |
|-----------------------------------------------------|--------|--------------------|---------|--------|---------------------|--------|
| Land                                                |   | $                  | 825     |   |                | $      | 825 |   |
| Machinery      and equipment                        |   |               | 37,223  |   |                |   | 39,648 |   |
| Leasehold      improvements                         |   |               | 2,994   |   |                |   | 2,968 |   |
| Building                                            |   |               | 2,563   |   |                |   | 2,563 |   |
| Furniture      and fixtures                         |   |               | 332     |   |                |   | 361 |   |
|                                                |   |               | 43,937  |   |                |   | 46,365 |   |
| Less      accumulated depreciation and amortization |   |               | (37,146 | )      |                |   | (37,892 | ) |
| Property,      plant and equipment, net             |   | $                  | 6,791   |   |                | $      | 8,473 |   |

|                                          |   | Fiscal      Years Ended |   |
|-----------------------------------------------|--------|-------------------------|--------|
|                                          |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| United      States                            |   | $                       | 4,690  |   |   | $ | 11,852 |   |   | $ | 21,725 |   |
| Foreign                                       |   |                    | 1,686  |   |   |   | 3,914 |   |   |   | 755 |   |
| Income      before provision for income taxes |   | $                       | 6,376  |   |   | $ | 15,766 |   |   | $ | 22,480 |   |

----

|                                  |   | Fiscal      Years Ended |   |
|---------------------------------------|--------|-------------------------|--------|
|                                  |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Current:                              |   |                    |   |   |   |   |   |   |   |
| Federal                               |   | $                       | 2,091  |   |   | $ | 383 |   |   | $ | 7,773 |   |
| State                                 |   |                    | 15     |   |   |   | 938 |   |   |   | 435 |   |
| Non-US                                |   |                    | 76     |   |   |   | 883 |   |   |   | 167 |   |
|                                  |   |                    | 2,182  |   |   |   | 2,204 |   |   |   | 8,375 |   |
| Deferred:                             |   |                    |   |   |   |   |   |   |   |   |   |   |
| Federal                               |   |                    | (882   | ) |   |   | 927 |   |   |   | (2,703 | ) |
| State                                 |   |                    | 6      |   |   |   | 132 |   |   |   | (279 | ) |
| Non-US                                |   |                    | (55    | ) |   |   | (42 | ) |   |   | 82 |   |
|                                  |   |                    | (931   | ) |   |   | 1,017 |   |   |   | (2,900 | ) |
| Total      provision for income taxes |   | $                       | 1,251  |   |   | $ | 3,221 |   |   | $ | 5,475 |   |

|                                              |   | Fiscal      Years Ended |   |
|---------------------------------------------------|--------|-------------------------|--------|
|                                              |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Tax      provision at US statutory rates          |   |                    | 35     | % |   |   | 35 | % |   |   | 35 | % |
| State      tax provision, net of Federal benefits |   |                    | 3      |   |   |   | 4 |   |   |   | 2 |   |
| Tax      credits                                  |   |                    | (12    | ) |   |   | (4 | ) |   |   | (2 | ) |
| Domestic      production activity deduction       |   |                    | (1     | ) |   |   | (3 | ) |   |   | (1 | ) |
| Foreign      earnings tax differential            |   |                    | (1     | ) |   |   | (3 | ) |   |   | (1 | ) |
| Tax      exempt investment income                 |   |                    | (5     | ) |   |   | (6 | ) |   |   | (8 | ) |
| Stock      based compensation                     |   |                    | 4      |   |   |   | 1 |   |   |   | 1 |   |
| IRS      settlement                               |   |                    | -      |   |   |   | (2 | ) |   |   | (1 | ) |
| Other                                             |   |                    | (3     | ) |   |   | (2 | ) |   |   | (1 | ) |
| Effective      income tax rate                    |   |                    | 20     | % |   |   | 20 | % |   |   | 24 | % |

----

|                                                    |   | Fiscal      Years Ended |   |
|---------------------------------------------------------|--------|-------------------------|--------|
| Deferred      tax assets:                               |   | April      3, 2010      |   |   | March      28, 2009 |   |
| Inventory      write downs                              |   | $                       | 3,431  |   |   | $ | 3,945 |   |
| Investment      write down                              |   |                    | 1,632  |   |   |   | 3,500 |   |
| Accrued      liabilities                                |   |                    | 3,028  |   |   |   | 2,534 |   |
| Depreciation      and amortization                      |   |                    | 850    |   |   |   | 1,302 |   |
| Stock      compensation                                 |   |                    | 1,920  |   |   |   | 1,080 |   |
| Deferred      revenue on shipments to distributors      |   |                    | 656    |   |   |   | 739 |   |
| Allowances      for doubtful accounts and sales returns |   |                    | 169    |   |   |   | 300 |   |
| Capital      Loss                                       |   |                    | 282    |   |   |   | 283 |   |
| Accrued      employee benefits                          |   |                    | 878    |   |   |   | 108 |   |
| Other                                                   |   |                    | 1,386  |   |   |   | 843 |   |
| Gross      deferred tax assets                          |   |                    | 14,232 |   |   |   | 14,634 |   |
| Valuation      allowance                                |   |                    | (816   | ) |   |   | (283 | ) |
| Net      deferred tax assets                            |   | $                       | 13,416 |   |   | $ | 14,351 |   |

| Description                             |   | Balance      at Beginning of Period |   |   | Charge(1) |   |   | Deductions      and Other(2) |   |   | Balance      at End of Period |   |
|-----------------------------------------|--------|-------------------------------------|--------|--------|-----------|--------|--------|------------------------------|--------|--------|-------------------------------|--------|
| Twelve      months ended April 3, 2010  |   | $                                   | 283    |   |      | $      | 534    |                         |   | $      | (1                            | )      |   | $ | 816 |   |
| Twelve      months ended March 28, 2009 |   | $                                   | 283    |   |      | $      | -      |                         |   | $      | -                             |   |   | $ | 283 |   |
| Twelve      months ended March 29, 2008 |   | $                                   | 307    |   |      | $      | -      |                         |   | $      | (24                           | )      |   | $ | 283 |   |

|        (1) | A      valuation allowance was placed on the Company’s California R&D      credits. |
|-----------------|-----------------------------------------------------------------------------------------------|

|  (2) | For      fiscal years ended April 3, 2010 and March 28, 2009, amounts represent      changes in the state tax rates, For the fiscal years ended March 29, 2008,      the amount represents a true-up in the amount of the capital loss      carryover. |
|-----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                                                                                        |   | Fiscal      Years Ended |   |
|---------------------------------------------------------------------------------------------|--------|-------------------------|--------|
|                                                                                        |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Beginning      balance                                                                      |   | $                       | 4,219  |   |   | $ | 3,941 |   |   | $ | 4,713 |   |
| Increases      (decreases) of unrecognized tax benefits related to prior years'      UTB    |   |                    | (90    | ) |   |   | 634 |   |   |   | 64 |   |
| Increases      (decreases) of unrecognized tax benefits related to current year's      UTB  |   |                    | 387    |   |   |   | 803 |   |   |   | 552 |   |
| Increases      (decreases) of unrecognized tax benefits related to      settlements         |   |                    | -      |   |   |   | (648 | ) |   |   | (1,021 | ) |
| Reductions      to unrecognized tax benefits related to lapsing statute of      limitations |   |                    | (374   | ) |   |   | (511 | ) |   |   | (367 | ) |
| Ending      balance                                                                         |   | $                       | 4,142  |   |   | $ | 4,219 |   |   | $ | 3,941 |   |

----

|                                                          |   | April      3, 2010 |   |   | March      28, 2009 |   |   |   |
|---------------------------------------------------------------|--------|--------------------|--------|--------|---------------------|--------|--------|--------|
| Net      income                                               |   | $                  | 5,125  |   |                | $      | 12,545 |   |   |   |
| Unrealized      gain (loss) on available-for-sale investments |   |               | 4,791  |   |                |   | (4,925 | )      |   |   |
| Deferred      income taxes                                    |   |               | (1,863 | )      |                |   | 3,500  |   | (1) |   |
| Comprehensive      income                                     |   | $                  | 8,053  |   |                | $      | 11,120 |   |   |   |

| (1) | Included      in the $3,500,000 recorded in the fiscal 2009 was the deferred income      taxes of $1,587,000 the Company booked in the third quarter of fiscal 2009      to correct an error related to fiscal2008. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                              |   | Fiscal      Years Ended |   |
|-----------------------------------|--------|-------------------------|--------|
|                              |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Number      of shares repurchased |   |                    | -      |   |   |   | - |   |   |   | 1,173,000 |   |
| Cost      of shares repurchased   |   | $                       | -      |   |   | $ | - |   |   | $ | 27,371,000 |   |
| Average      price per share      |   | $                       | -      |   |   | $ | - |   |   | $ | 23.33 |   |

----

----

|                         |   |                     |      |   | Options      Outstanding |   |
|------------------------------|--------|--------------------------|-----------|--------|--------------------------|--------|
|                         |   | Available      For Grant |      |   | Shares                   |   |   | Price      Per Share |   |   | Weighted      Average Exercise Price |   |
| Balance,      March 31, 2007 |   |                     | 885,579   |   |                     |   | 835,870 |   |   | $ | 11.30 |   | - |   | $ | 46.92 |   |   | $ | 27.90 |   |
| Granted                      |   |                     | (307,700  | )      |                     |   | 307,700 |   |   |   | 20.70 |   | - |   |   | 35.86 |   |   |   | 32.71 |   |
| Exercised                    |   |                     | -         |   |                     |   | (56,505 | ) |   |   | 11.30 |   | - |   |   | 33.67 |   |   |   | 19.56 |   |
| Canceled                     |   |                     | 64,700    |   |                     |   | (64,700 | ) |   |   | 11.30 |   | - |   |   | 41.05 |   |   |   | 35.13 |   |
| Balance,      March 29, 2008 |   |                     | 642,579   |   |                     |   | 1,022,365 |   |   |   | 11.30 |   | - |   |   | 46.92 |   |   |   | 29.35 |   |
| Granted                      |   |                     | (597,500  | )      |                     |   | 597,500 |   |   |   | 20.85 |   | - |   |   | 29.70 |   |   |   | 23.13 |   |
| Exercised                    |   |                     | -         |   |                     |   | (37,000 | ) |   |   | 11.30 |   | - |   |   | 21.75 |   |   |   | 16.39 |   |
| Canceled                     |   |                     | 115,030   |   |                     |   | (115,030 | ) |   |   | 15.67 |   | - |   |   | 46.92 |   |   |   | 31.95 |   |
| Balance,      March 28, 2009 |   |                     | 160,109   |   |                     |   | 1,467,835 |   |   |   | 11.30 |   | - |   |   | 46.92 |   |   |   | 26.94 |   |
| Authorized                   |   |                     | 1,000,000 |   |                     |   | - |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Granted                      |   |                     | (59,000   | )      |                     |   | 59,000 |   |   |   | 23.91 |   | - |   |   | 25.84 |   |   |   | 25.07 |   |
| Exercised                    |   |                     |      |   |                     |   | (65,713 | ) |   |   | 11.30 |   | - |   |   | 25.30 |   |   |   | 16.13 |   |
| Canceled                     |   |                     | 16,180    |   |                     |   | (16,180 | ) |   |   | 20.86 |   | - |   |   | 41.05 |   |   |   | 30.84 |   |
| Balance,      April 3, 2010  |   |                     | 1,117,289 |   |                     |   | 1,444,942 |   |   |   | 15.67 |   | - |   |   | 46.92 |   |   |   | 27.31 |   |

|                          |   |   |                    |   |   |                                                     | Options      Outstanding |   |                                 | Options      Exercisable |   |
|-------------------------------|--------|--------|-------------------------|--------|--------|----------------------------------------------------------|--------------------------|--------|--------------------------------------|--------------------------|--------|
| Range      of Exercise Prices |   |   | Number      Outstanding |   |   | Weighted-Average      Remaining Contractual Life (Years) |                     |   | Weighted-Average      Exercise Price |                     |   | Number      Exercisable |   |   | Weighted-Average      Exercise Price |   |
| $                             | 15.67  |   | -                       |   | $      | 19.99                                                    |                     |   |                                 | 200,160                  |   |   |   | 1.20 |   |   | $ | 17.26 |   |   |   | 192,320 |   |   | $ | 17.26 |   |
|                          | 20.00  |   | -                       |   |   | 24.99                                                    |                     |   |                                 | 451,122                  |   |   |   | 8.38 |   |   |   | 21.06 |   |   |   | 107,842 |   |   |   | 21.01 |   |
|                          | 25.00  |   | -                       |   |   | 29.99                                                    |                     |   |                                 | 259,220                  |   |   |   | 7.95 |   |   |   | 26.95 |   |   |   | 62,000 |   |   |   | 27.58 |   |
|                          | 30.00  |   | -                       |   |   | 34.99                                                    |                     |   |                                 | 268,660                  |   |   |   | 4.59 |   |   |   | 33.76 |   |   |   | 167,825 |   |   |   | 33.73 |   |
|                          | 35.00  |   | -                       |   |   | 39.99                                                    |                     |   |                                 | 103,300                  |   |   |   | 7.23 |   |   |   | 35.84 |   |   |   | 45,320 |   |   |   | 35.83 |   |
|                          | 40.00  |   | -                       |   |   | 44.99                                                    |                     |   |                                 | 144,480                  |   |   |   | 3.51 |   |   |   | 40.90 |   |   |   | 88,660 |   |   |   | 40.92 |   |
|                          | 45.00  |   | -                       |   |   | 46.92                                                    |                     |   |                                 | 18,000                   |   |   |   | 3.66 |   |   |   | 46.92 |   |   |   | 10,800 |   |   |   | 46.92 |   |
| $                             | 15.67  |   | -                       |   | $      | 46.92                                                    |                     |   |                                 | 1,444,942                |   |   |   | 5.97 |   |   |   | 27.31 |   |   |   | 674,767 |   |   |   | 27.73 |   |

----

|                                              |   | Fiscal      Years Ended |   |
|---------------------------------------------------|--------|-------------------------|--------|
|                                              |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Cost      of sales                                |   | $                       | 697    |   |   | $ | 558 |   |   | $ | 567 |   |
| Research      and development expenses            |   |                    | 1,640  |   |   |   | 1,236 |   |   |   | 1,053 |   |
| Selling,      general and administrative expenses |   |                    | 1,133  |   |   |   | 967 |   |   |   | 925 |   |
| Total      stock-based compensation expense       |   | $                       | 3,470  |   |   | $ | 2,761 |   |   | $ | 2,545 |   |

|                                |   | Fiscal      Years Ended       |   |
|-------------------------------------|--------|-------------------------------|--------|
|                                |   | April      3, 2010            |   |   | March      28, 2009 |   |
|                                |   | Directors &      Officers |   |   | All      Other Employees |   |   | Directors &      Officers |   |   | All      Other Employees |   |
| Expected      term (years)          |   |                          | 6.75   |   |   |   | 5.25 |   |   |   | 7.75 |   |   |   | 5.25 |   |
| Stock      volatility               |   |                          | 45.89  | % |   |   | 46.05%      - 47.27 | % |   |   | 50.81%      - 52.81 | % |   |   | 46.09%      - 47.33 | % |
| Risk      free interest rates       |   |                          | 2.91   | % |   |   | 2.12%      - 2.64 | % |   |   | 2.28%      - 3.46 | % |   |   | 1.76%      - 3.32 | % |
| Dividends      during expected term |   |                          | 0.0    | % |   |   | 0.0 | % |   |   | 0.0 | % |   |   | 0.0 | % |

----

|                                                                  |   | Fiscal      Years Ended |   |
|-----------------------------------------------------------------------|--------|-------------------------|--------|
| (in thousands, except per share      value)                           |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Net      income                                                       |   | $                       | 5,125  |   |   | $ | 12,545 |   |   | $ | 17,005 |   |
| BASIC:                                                                |   |                    |   |   |   |   |   |   |   |   |   |   |
| Weighted      average shares outstanding                              |   |                    | 12,912 |   |   |   | 12,836 |   |   |   | 13,585 |   |
| Net      income per share                                             |   | $                       | 0.40   |   |   | $ | 0.98 |   |   | $ | 1.25 |   |
|                                                                  |   |                    |   |   |   |   |   |   |   |   |   |   |
| DILUTED:                                                              |   |                    |   |   |   |   |   |   |   |   |   |   |
| Weighted      average shares outstanding                              |   |                    | 12,912 |   |   |   | 12,836 |   |   |   | 13,585 |   |
| Effect      of dilutive securities:  stock options and ESPP |   |                    | 83     |   |   |   | 91 |   |   |   | 205 |   |
|       Total                             |   |                    | 12,995 |   |   |   | 12,927 |   |   |   | 13,790 |   |
| Net      income per share                                             |   | $                       | 0.39   |   |   | $ | 0.97 |   |   | $ | 1.23 |   |

----

|                     |   | Fiscal      Years Ended |   |
|--------------------------|--------|-------------------------|--------|
| Net      Sales           |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| Medical      Electronics |   | $                       | 24,735 |   |   | $ | 33,368 |   |   | $ | 30,381 |   |
| LED      Lighting        |   |                    | 14,850 |   |   |   | 4,973 |   |   |   | 3,871 |   |
| Imaging                  |   |                    | 13,407 |   |   |   | 20,550 |   |   |   | 26,473 |   |
| Telecom                  |   |                    | 5,252  |   |   |   | 7,139 |   |   |   | 8,715 |   |
| Industrial/Other         |   |                    | 8,480  |   |   |   | 12,780 |   |   |   | 13,119 |   |
| Net      Sales           |   | $                       | 66,724 |   |   | $ | 78,810 |   |   | $ | 82,559 |   |

|                        |   | Fiscal      Years Ended |   |
|-----------------------------|--------|-------------------------|--------|
| Net      Sales              |   | April      3, 2010      |   |   | March      28, 2009 |   |   | March      29, 2008 |   |
| China                       |   | $                       | 21,060 |   |   | $ | 17,968 |   |   | $ | 18,903 |   |
| United      States          |   |                    | 21,043 |   |   |   | 29,301 |   |   |   | 30,162 |   |
| Asia      (excluding China) |   |                    | 17,280 |   |   |   | 20,670 |   |   |   | 21,645 |   |
| Europe                      |   |                    | 7,022  |   |   |   | 10,093 |   |   |   | 11,005 |   |
| Other                       |   |                    | 319    |   |   |   | 778 |   |   |   | 844 |   |
| Total      Net Sales        |   | $                       | 66,724 |   |   | $ | 78,810 |   |   | $ | 82,559 |   |

|                                                |   | April      3, 2010 |   |   | March      28, 2009 |   |
|-----------------------------------------------------|--------|--------------------|--------|--------|---------------------|--------|
| United      States                                  |   | $                  | 5,630  |   |                | $      | 6,952 |   |
| Hong      Kong                                      |   |               | 1,161  |   |                |   | 1,521 |   |
|   Property,      plant and equipment, net |   | $                  | 6,791  |   |                | $      | 8,473 |   |

----

| Payment      Due by Fiscal Years |   | Operating      Lease(1) |   |
|----------------------------------|--------|-------------------------|--------|
| 2011                             |   | $                       | 1,188  |   |
| 2012                             |   |                    | 234    |   |
| 2013                             |   |                    | 82     |   |
|                             |   | $                       | 1,504  |   |

----

----

|   | Exhibit                                                                                  | Exhibit Description                                                                                                                                                                                                                                                                                                                                     |
|--------|------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.1                                                                                      | Restated      Articles of Incorporation of Registrant filed May 21,  1980.                                                                                                                                                                                                                                                                              |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.2                                                                                      | Certificate      of Amendment of Articles of Incorporation filed April 16,      1981.                                                                                                                                                                                                                                                                   |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.3                                                                                      | Certificate      of Amendment of Articles of Incorporation filed September 30,      1983.                                                                                                                                                                                                                                                               |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.4                                                                                      | Certificate      of Amendment of Articles of Incorporation filed October 14,      1988.                                                                                                                                                                                                                                                                 |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.5      (1)                                                                             | Amended      and Restated Bylaws of Registrant.                                                                                                                                                                                                                                                                                                         |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.1      *                                                                              | Non-Qualified      Deferred Compensation Plan, which became effective January 1, 1996, as      most recently amended on December 1, 2008.                                                                                                                                                                                                               |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.2                                                                                     | Lease  71      Vista Montana, San Jose, California, comprised of a lease dated December      7, 1988, and five amendments (5/4/89; 6/18/90; 12/21/95; 2/1/95; and      1/223/04) and two assignments (11/15/96 and 2/1/99)      with  Sobrato Development Companies #871, as landlord, and      Supertex, Inc., as assignee/tenant. |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.3(2)                                                                                  | Sixth      Amendment to Lease of 71 Vista Montana, San Jose, California dated April      16, 2010.                                                                                                                                                                                                                                                      |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.4                                                                                     | Leases      of Hong Kong Facility dated 5/16/08, 9/11/09, and 9/11/09 with Jing Wah      Garments Mfg. Co. Ltd.                                                                                                                                                                                                                                         |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.5      (3)*                                                                 | 2000      Employee Stock Purchase Plan.                                                                                                                                                                                                                                                                                                                 |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.6      (4)*                                                                           | 2001      Stock Option Plan.                                                                                                                                                                                                                                                                                                                            |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.7      (5)*                                                                           | 2009      Equity Incentive Plan.                                                                                                                                                                                                                                                                                                                        |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 10.8*                                                                                    | Profit      Sharing Bonus Incentive Plan.                                                                                                                                                                                                                                                                                                               |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 21.1                                                                                     | Subsidiary      of the Registrant.                                                                                                                                                                                                                                                                                                                      |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 23.1               | Consent      of PricewaterhouseCoopers LLP, Independent Registered Public Accounting      Firm.                                                                                                                                                                                                                                                         |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 24.1                                                                                     | Power      of Attorney (See signature page).                                                                                                                                                                                                                                                                                                            |
|   |                                                                                     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 31.1                                                                                     | Certification      of Chief Executive Officer pursuant to Securities Exchange Act Rules      13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the      Sarbanes-Oxley Act of 2002.                                                                                                                                                        |

----

|   |   |                                                                                                                                                                                                                      |
|--------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   | 31.2   | Certification      of Chief Financial Officer pursuant to Securities Exchange Act Rules      13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the      Sarbanes-Oxley Act of 2002.                          |
|   |   |                                                                                                                                                                                                                      |
|   | 32.1   | Certification      of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted      pursuant to Section 906 of the Sarbanes-Oxley Act of  2002.                                                             |
|   |   |                                                                                                                                                                                                                      |
|   | 32.2   | Certification      of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted      pursuant to Section 906 of the Sarbanes-Oxley Act of  2002.                                                             |
|   |   |                                                                                                                                                                                                                      |
|   | (1)    | Exhibit      3.6 to Registrant’s Current Report on Form 8-K dated December 21, 2007,      filed with the SEC on December 28, 2007, is hereby incorporated by      reference.                                        |
|   |   |                                                                                                                                                                                                                      |
|   | (2)    | Exhibit      10.9 to Registrant’s Current Report on Form 8-K dated April 16, 2010,      filed with the SEC on April 22, 2010 is hereby incorporated by      reference.                                              |
|   |   |                                                                                                                                                                                                                      |
|   | (3)    | Exhibit      4.1 to Registrant's  Registration Statement on Form S-8 (File      No. 333-47606) which was filed with the SEC and became effective on      October 10, 2000, is hereby incorporated by reference. |
|   |   |                                                                                                                                                                                                                      |
|   | (4)    | Appendix      B of Registrant’s amended Proxy Statement on Schedule 14A filed on August      7, 2001 (File No. 000-12718) is hereby incorporated by      reference.                                            |
|   |   |                                                                                                                                                                                                                      |
|   | (5)    | Appendix      1 of Registrant’s Proxy Statement on Schedule 14A filed on July 2, 2009      (File No. 000-12718) is hereby incorporated by      reference.                                                      |
|   |   |                                                                                                                                                                                                                      |
|   | *      | Denotes      a management contract or compensatory plan or  arrangement.                                                                                                                                                  |

----