| 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 2, 2011 |
| 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 its charter) |

| 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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| 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 October 1, 2010, the last business day of the registrant’s most recently completed second fiscal quarter, there were 12,995,905 shares of the registrant’s common stock outstanding, and the aggregate market value of such shares held by non-affiliates of the registrant was $247,183,092, based on the closing price reported on the NASDAQ National Market on October 1, 2010. 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 June 3, 2011, was 12,714,713. |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| 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 19, 2011 (the "Proxy Statement").                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Exhibit Index is on Page 70                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Total number of pages is  71                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |

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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…………………………………………………………………………….............................................................................................................                                                                     |   | 14     |
| Item       | 4.                                                                                                                                                                                                                                                                                                                                                                          |   | Removed and Reserved………………………………………………………………………...........................................................................................................                                                                                  |   | 14     |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   | PART II                                                                                                                                                                                                                                                                                                                                                                                                       |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
| Item       | 5.                                                                                                                                                                                                                                                                                                                                                                          |   | Market for Registrant's Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities………………………………...........                                                                                                                                                                                                   |   | 15     |
| Item       | 6.                                                                                                                                                                                                                                                                                                                                                                          |   | Selected Financial Data………………………………………………………………………...........................................................................................................                                                                               |   | 19     |
| Item       | 7.                                                                                                                                                                                                                                                                                                                                                                          |   | Management's Discussion and Analysis of Financial Condition and Results of Operations….............................................................................................                                                                                                                                                                                                                     |   | 19     |
| Item       | 7A.                                                                                                                                                                                                                                                                                                                                                                         |   | Quantitative and Qualitative Disclosures about Market Risk…………………………………...................................................................................................                                                                                                                                                      |   | 34     |
| Item       | 8.                                                                                                                                                                                                                                                                                                                                                                          |   | Financial Statements and Supplementary Data……………………………………………….......................................................................................................                                                                                                                              |   | 35     |
| Item       | 9.                                                                                                                                                                                                                                                                                                                                                                          |   | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure…                                                                                                                                                                                                                                                                                                                   |   | 35     |
| Item       | 9A.                                                                                                                                                                                                                                                                                                                                                                         |   | Controls and Procedures………………………………………………………………………........................................................................................................                                                                                  |   | 35     |
| Item       | 9B.                                                                                                                                                                                                                                                                                                                                                                         |   | Other Information…………………………………………………………………………….............................................................................................................                                                                     |   | 37     |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   | PART III                                                                                                                                                                                                                                                                                                                                                                                                      |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
| Item       | 10.                                                                                                                                                                                                                                                                                                                                                                         |   | Directors, Executive Officers, and Corporate Governance……………………………………...................................................................................................                                                                                                                                                  |   | 37     |
| Item       | 11.                                                                                                                                                                                                                                                                                                                                                                         |   | Executive Compensation……………………………………………………………………….......................................................................................................                                                                                    |   | 37     |
| Item       | 12.                                                                                                                                                                                                                                                                                                                                                                         |   | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ............................................................................                                                                                                                                                                                                                                   |   | 37     |
| Item       | 13.                                                                                                                                                                                                                                                                                                                                                                         |   | Certain Relationships and Related Transactions, and Director Independence………………................................................................................................                                                                                                                                                                                           |   | 38     |
| Item       | 14.                                                                                                                                                                                                                                                                                                                                                                         |   | Principal Accountant Fees and Services………………………………………………………....................................................................................................                                                                                                                 |   | 38     |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   | PART IV                                                                                                                                                                                                                                                                                                                                                                                                       |   |   |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
| Item       | 15.                                                                                                                                                                                                                                                                                                                                                                         |   | Exhibits and Financial Statement Schedules…………………………………………………....................................................................................................                                                                                                                           |   | 39     |
|       |                                                                                                                                                                                                                                                                                                                                                                        |   |                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |
| Signatures | …………………………………………………………………………………………………........................................................................................................ |   | 41                                                                                                                                                                                                                                                                                                                                                                                                            |

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| (1)   | A family of products for driving electroluminescent (“EL”) lamps for backlighting hand-held instruments, such as cell phone keypads, watches, monochrome flat screens 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. |
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| (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               |   | 73     |   | 1976          |
| Benedict C. K. Choy |   | Senior Vice President, Technology Development       |   | 65     |   | 1976          |
| William P. Ingram   |   | Vice President, Wafer Fab Operations                |   | 63     |   | 1999          |
| Michael Lee         |   | Vice President, I.C. Design                         |   | 56     |   | 1999          |
| William Petersen    |   | Vice President, Worldwide Sales                     |   | 58     |   | 2001          |
| Michael Tsang       |   | Vice President, Standard Products                   |   | 52     |   | 2006          |
| Phillip A. Kagel    |   | Vice President, Finance and Chief Financial Officer |   | 61     |   | 2006          |
| Stephen Lin         |   | Vice President, Marketing and Business Development  |   | 52     |   | 2011          |

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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. |
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| · | 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 product offerings. |
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| · | 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. |
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| · | A significant portion of our sales are from a small number of customers and the loss of 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 General Electric Company accounted for approximately 12% of our net sales for the fiscal year ended April 2, 2011, while combined sales to General Electric Company and Samsung accounted for approximately 25% of our net sales for fiscal 2010. |
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| · | 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. In addition, some of our own customers have in-house semiconductor design capabilities and may develop and in-source products to replace those that we currently sell them as did Samsung in fiscal 2011 for our LED drivers for backlighting their LED TVs. |
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| · | We sell a substantial amount of our products internationally. International sales represent 71%, 68% and 63% of net sales, for fiscal years 2011, 2010 and 2009, 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. |
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| · | 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 and allowances. |
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| · | 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. |
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| · | 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. |
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| · | 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 activities remains in our Sunnyvale and San Jose facilities. Our innovative product design and applications activities are located in both Sunnyvale and Hong Kong facilities. |
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| · | 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. |
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| ·   | 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. |
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| · | We operate a fab in San Jose, California, where 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 April 2, 2011, 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. Upon discovery, we voluntarily notified the U.S. Department of State and submitted a follow-on report after completing our investigation of the facts 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, which to date has not imposed any fine or penalty. While at this time we are unable to estimate the extent of any fines or penalties or other potential losses that we may incur with respect to this matter, we believe that it is unlikely, although not remote, that the ultimate outcome would have a material adverse effect on us. Since becoming aware of these potential ITAR issues, we have moved the assembly and testing of these products to ITAR-certified onshore facilities. |
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| ·   | 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. |
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| ·   | We invest our excess cash in marketable securities consisting primarily of municipal bonds, corporate bonds, auction rate securities (“ARS”), government agency bonds, discount notes and certificates of deposits. As of the end of fiscal year 2011, the ARS we owned had a par value of $32,750,000. 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 2, 2011, we classified all 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 $2,550,000 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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| ·   | In January 2011, our Board of Directors designated $60 million of our cash, cash equivalents and investments for a major stock repurchase during the next twelve to twenty-four months and accordingly increased our share repurchase plan by approximately two million shares to 2,500,000 shares.  Whether we utilize that much cash for stock repurchases depends upon such factors as the price of our stock, the dollar volume of transactions in our stock, and whether we learn of material non-public information at a time we do not have a 10b5-1 program in place which permits us to continue buying shares in the market.  As of June 3, 2011, we had only repurchased $8.5 million of our shares, which is short of the $2.5 million run rate per month necessary to repurchase $60 million shares in twenty-four months. |
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| Item 5. | Market for Registrant's Common Equity and Related Shareholder Matters and Issuer Purchases of Equity Securities |
|---------|-----------------------------------------------------------------------------------------------------------------|

|                                |   | Fiscal Years |   |
|-------------------------------------|--------|--------------|--------|
|                                |   | 2006         |   |   | 2007 |   |   | 2008 |   |   | 2009 |   |   | 2010 |   |   | 2011 |   |
| Nasdaq Stock Market (US only)       |   | $            | 100.00 |   |   | $ | 103.69 |   |   | $ | 95.79 |   |   | $ | 53.00 |   |   | $ | 82.41 |   |   | $ | 96.85 |   |
| Nasdaq Electronic Components Stocks |   | $            | 100.00 |   |   | $ | 97.94 |   |   | $ | 94.65 |   |   | $ | 66.34 |   |   | $ | 102.86 |   |   | $ | 99.49 |   |
| Supertex, Inc.                      |   | $            | 100.00 |   |   | $ | 88.28 |   |   | $ | 54.57 |   |   | $ | 64.94 |   |   | $ | 73.60 |   |   | $ | 59.22 |   |

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|           |   | Fiscal Years Ended |   |
|----------------|--------|--------------------|--------|
|           |   | April 2, 2011      |   |   | April 3, 2010 |   |
|           |   | High               |   |   | Low |   |   | High |   |   | Low |   |
| First Quarter  |   | $                  | 29.58  |   |   | $ | 23.91 |   |   | $ | 27.30 |   |   | $ | 22.49 |   |
| Second Quarter |   |               | 27.75  |   |   |   | 21.88 |   |   |   | 31.73 |   |   |   | 23.05 |   |
| Third Quarter  |   |               | 25.84  |   |   |   | 21.99 |   |   |   | 31.27 |   |   |   | 23.16 |   |
| Fourth Quarter |   |               | 24.88  |   |   |   | 20.55 |   |   |   | 29.80 |   |   |   | 22.64 |   |

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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, and Rights |   |   | 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     |   |                                                                                         | 1,454,622 |   |                                                                         | $      | 27.57  |                                                                                                                                        |   |   | 1,182,777 | (1) |
| Equity compensation plans not approved by security holders |   |                                                                                         | -         |   |                                                                         |   | N/A    |                                                                                                                                        |   |   | - |   |

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| Period                    |   | Total Number of Shares Purchased (1) |    |   | Average Price Paid per Share |   |   | Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2) |   |   | Maximum Number of Shares that May yet be Purchased Under the Plans or Programs |   |
|---------------------------|--------|--------------------------------------|---------|--------|------------------------------|--------|--------|--------------------------------------------------------------------------------------|--------|--------|--------------------------------------------------------------------------------|--------|
|                      |   |                                 |    |   |                         |   |   |                                                                                 |   |   |                                                                           |   |
| 01/01/11 – 01/29/11 |   |                                 | 21,600  |   |                         | $      | 22.86  |                                                                                 |   |   | 21,600                                                                         |   |   |   | 2,478,400 |   |
| 01/30/11 – 02/26/11 |   |                                 | 243,275 |   |                         |   | 22.98  |                                                                                 |   |   | 243,275                                                                        |   |   |   | 2,235,125 |   |
| 02/27/11 – 04/02/11 |   |                                 | 8,022   |   |                         |   | 22.83  |                                                                                 |   |   | 8,022                                                                          |   |   |   | 2,227,103 |   |
| Total                     |   |                                 | 272,897 |   |                         | $      | 22.97  |                                                                                 |   |   | 272,897                                                                        |   |   |   |   |   |

| (1)   | Our current share repurchase program, under which we repurchased these 272,897 shares during the three months ended April 2, 2011, has been in place since 1999. Although we publicly announced the most recent 1,944,145 share program increase, we are not certain but do not believe we publicly announced this program at its inception, although our financial statements have reflected purchases from time to time under this program. These 272,897 shares were purchased in open market transactions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (2)   | We adopted a share repurchase program in 1992 authorizing the repurchase of 1,000,000 shares. The board of directors terminated this program in 1999 after 938,000 shares had been repurchased and adopted a share repurchase program authorizing the repurchase of 900,000 shares plus the 62,000 shares authorized for repurchase under the 1992 program whose repurchase had not been affected. As described in footnote (1), we are not certain but do not believe that we publicly announced the inception of the1999 repurchase program. On January 30, 2008, and January 21, 2011,  the board of directors amended the 1999 repurchase program to add 1,000,000 and 1,944,145 shares, respectively . The 1999 repurchase program has no expiration date, other than, unless extended, when all of the shares in the program have been repurchased. As of April 2, 2011, there were 2,227,103 shares remaining in the 1999 repurchase program.   Neither this program nor any other repurchase program or plan has expired during the fourth fiscal quarter ended April 2, 2011 nor have we decided to terminate any repurchase plan or program prior to expiration. There are no existing repurchase plans or programs under which we do not intend to make further purchases. |

----

|                                     |   | Fiscal Year |    |   | Fiscal Year |   |    | Fiscal Year |   |   | Fiscal Year |   |   | Fiscal Year |    |
|------------------------------------------|--------|-------------|---------|--------|-------------|--------|---------|-------------|--------|--------|-------------|--------|--------|-------------|---------|
| (in thousands, except per share amounts) |   | 2011        |    |   | 2010        |   |    | 2009        |   |   | 2008        |   |   | 2007        |    |
| Balance Sheet Data:                      |   |        |    |   |        |   |    |        |   |   |        |   |   |        |    |
| Total assets                             |   | $           | 220,596 |   |        | $      | 205,218 |        |   | $      | 190,304     |   |   | $           | 177,351 |   |   | $ | 185,932 |   |
| Total liabilities                        |   | $           | 27,677  |   |        | $      | 24,842  |        |   | $      | 22,728      |   |   | $           | 25,476  |   |   | $ | 24,680 |   |
|                                     |   |        |    |   |        |   |    |        |   |   |        |   |   |        |    |   |   |   |   |   |
| Statement of Income Data:                |   |        |    |   |        |   |    |        |   |   |        |   |   |        |    |   |   |   |   |   |
| Net Sales                                |   | $           | 83,172  |   |        | $      | 66,724  |        |   | $      | 78,810      |   |   | $           | 82,559  |   |   | $ | 98,020 |   |
| Gross margin                             |   |        | 45,188  |   |        |   | 32,002  |        |   |   | 41,879      |   |   |        | 46,981  |   |   |   | 58,349 |   |
| Income from operations                   |   |        | 16,143  |   |        |   | 3,758   |        |   |   | 13,994      |   |   |        | 16,492  |   |   |   | 27,904 |   |
| Net income                               |   | $           | 12,282  |   |        | $      | 5,125   |        |   | $      | 12,545      |   |   | $           | 17,005  |   |   | $ | 21,427 |   |
| Net income per share:                    |   |        |    |   |        |   |    |        |   |   |        |   |   |        |    |   |   |   |   |   |
| Basic                                    |   | $           | 0.95    |   |        | $      | 0.40    |        |   | $      | 0.98        |   |   | $           | 1.25    |   |   | $ | 1.56 |   |
| Diluted                                  |   | $           | 0.94    |   |        | $      | 0.39    |        |   | $      | 0.97        |   |   | $           | 1.23    |   |   | $ | 1.53 |   |
| Shares used in per share computation:    |   |        |    |   |        |   |    |        |   |   |        |   |   |        |    |   |   |   |   |   |
| Basic                                    |   |        | 12,976  |   |        |   | 12,912  |        |   |   | 12,836      |   |   |        | 13,585  |   |   |   | 13,715 |   |
| Diluted                                  |   |        | 13,030  |   |        |   | 12,995  |        |   |   | 12,927      |   |   |        | 13,790  |   |   |   | 14,040 |   |

----

|                                     |   | Fiscal Years Ended                                                                |
|------------------------------------------|--------|-----------------------------------------------------------------------------------|
|                                     |   | April 2, 2011                                                                     |   | April 3, 2010 |   | March 28, 2009 |
| Net sales                                |   |       100.0                                         | % |   |      100.0 | % |   |         100.0 | % |
| Cost of sales                            |   |         45.7                              |   |   |        52.0 |   |   |           46.9 |   |
| Research and development                 |   |         17.8                              |   |   |        23.1 |   |   |           18.4 |   |
| Selling, general and administrative      |   |         17.1                              |   |   |        19.2 |   |   |           16.9 |   |
| Income from operations                   |   |           19.4                  |   |   |          5.7 |   |   |           17.8 |   |
| Interest and Other income:               |   |                                                                              |   |   |   |   |   |   |   |
| Interest income                          |   |           1.0                   |   |   |         1.6 |   |   |             4.0 |   |
| Other income, net                        |   |              1.0 |   |   |         2.3 |   |   |           (1.8) |   |
| Income before provision for income taxes |   |          21.4                        |   |   |          9.6 |   |   |            20.0 |   |
| Provision for income taxes               |   |           6.6                   |   |   |          1.9 |   |   |             4.1 |   |
| Net income                               |   |         14.8                              | % |   |          7.7 | % |   |           15.9 | % |

----

----

----

----

|                   |   | Fiscal Years Ended |   |   | Year-Over-Year |   |
|------------------------|--------|--------------------|--------|--------|----------------|--------|
| (dollars in thousands) |   | April 2, 2011      |   |   | April 3, 2010  |   |   | Change |   |
| Medical Electronics    |   | $                  | 30,635 |   |           |   | 37 | % |   | $ | 24,735 |   |   |   | 37 | % |   |   | 24 | % |
| Imaging                |   |               | 16,369 |   |           |   | 20 | % |   |   | 13,407 |   |   |   | 20 | % |   |   | 22 | % |
| LED Lighting           |   |               | 13,242 |   |           |   | 16 | % |   |   | 14,850 |   |   |   | 22 | % |   |   | -11 | % |
| Telecom                |   |               | 9,376  |   |           |   | 11 | % |   |   | 5,252 |   |   |   | 8 | % |   |   | 79 | % |
| Industrial/Other       |   |               | 13,550 |   |           |   | 16 | % |   |   | 8,480 |   |   |   | 13 | % |   |   | 60 | % |
| Total Net Sales        |   | $                  | 83,172 |   |           |   | 100 | % |   | $ | 66,724 |   |   |   | 100 | % |   |   | 25 | % |

----

|                   |   | Fiscal Years Ended |   |   | Year-Over-Year |   |
|------------------------|--------|--------------------|--------|--------|----------------|--------|
| (Dollars in thousands) |   | April 2, 2011      |   |   | April 3, 2010  |   |   | Change |   |
| Asia (excl. China)     |   | $                  | 24,622 |   |           |   | 30 | % |   | $ | 17,280 |   |   |   | 26 | % |   |   | 42 | % |
| United States          |   |               | 24,304 |   |           |   | 29 | % |   |   | 21,043 |   |   |   | 32 | % |   |   | 15 | % |
| China                  |   |               | 21,120 |   |           |   | 25 | % |   |   | 21,060 |   |   |   | 32 | % |   |   | 0 | % |
| Europe                 |   |               | 12,503 |   |           |   | 15 | % |   |   | 7,022 |   |   |   | 10 | % |   |   | 78 | % |
| Other                  |   |               | 623    |   |           |   | 1 | % |   |   | 319 |   |   |   | 0 | % |   |   | 95 | % |
| Total Net Sales        |   | $                  | 83,172 |   |           |   | 100 | % |   | $ | 66,724 |   |   |   | 100 | % |   |   | 25 | % |

----

|                                                                     |   | Fiscal Years Ended |   |
|--------------------------------------------------------------------------|--------|--------------------|--------|
| (Dollars in thousands)                                                   |   | April 2, 2011      |   |   | April 3, 2010 |   |
| Gross Margin Percentage                                                  |   |               | 54     | % |   |   | 48 | % |
| Included in Gross Margin Percentage Above                                |   |               |   |   |   |   |   |   |
| Gross Margin Benefit from Cost of Previously Written Down Inventory Sold |   | $                  | 1,358  |   |   | $ | 1,645 |   |
| Percentage of Net Sales                                                  |   |               | 1.6    | % |   |   | 2.5 | % |

|                          |   | Fiscal Years Ended |   |   | Year-Over-Year  |   |
|-------------------------------|--------|--------------------|--------|--------|----------------------|--------|
| (Dollars in thousands)        |   | April 2, 2011      |   |   | April 3, 2010        |   |   | Change |   |
|  R&D Expenses        |   | $                  | 14,851 |   |                 | $      | 15,404 |   |   |   | -4 | % |
|  Percentage of Net Sales |   |               | 18     | %      |                 |   | 23 | % |   |   |   |   |

|                    |   | Fiscal Years Ended |   |   | Year-Over-Year |   |
|-------------------------|--------|--------------------|--------|--------|----------------|--------|
| (Dollars in thousands)  |   | April 2, 2011      |   |   | April 3, 2010  |   |   |  Change |   |
| SG&A Expenses       |   | $                  | 14,194 |   |           | $      | 12,840 |   |   |   | 11 | % |
| Percentage of Net Sales |   |               | 17     | %      |           |   | 19 | % |   |   |   |   |

----

|                                        |   | Fiscal Years Ended |   |   | Year-Over-Year |   |
|---------------------------------------------|--------|--------------------|--------|--------|----------------|--------|
| (Dollars in thousands)                      |   | April 2, 2011      |   |   | April 3, 2010  |   |   | Change |   |
| Interest Income                             |   | $                  | 812    |   |           | $      | 1,058 |   |   |   | -23 | % |
| Other Income (Expense), Net                 |   |               | 825    |   |           |   | 1,560 |   |   |   | -47 | % |
| Total Interest Income and Other income, Net |   | $                  | 1,637  |   |           | $      | 2,618 |   |   |   | -37 | % |
| Percentage of Net Sales                     |   |               | 2      | %      |           |   | 4 | % |   |   |   |   |

----

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

----

|                    |   | Fiscal Years Ended |   |   | Year-Over-Year  |   |
|-------------------------|--------|--------------------|--------|--------|----------------------|--------|
| (Dollars in thousands)  |   | April 3, 2010      |   |   | March 28, 2009       |   |   | 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 | % |   |   |   |   |

----

|                                                 |   | Fiscal Years Ended |   |
|------------------------------------------------------|--------|--------------------|--------|
|                                                 |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Net cash provided by operating activities            |   | $                  | 14,450 |   |   | $ | 8,541 |   |   | $ | 22,406 |   |
| Net cash provided by (used in) investing activities  |   |               | 3,086  |   |   |   | (23,872 | ) |   |   | (17,792 | ) |
| Net cash (used in) provided by financing activities  |   |               | (3,727 | ) |   |   | 1,240 |   |   |   | 1,728 |   |
| Net (decrease) increase in cash and cash equivalents |   | $                  | 13,809 |   |   | $ | (14,091 | ) |   | $ | 6,342 |   |

----

----

| Contractual Obligations            |   | Total  |   |   | Less than 1 Year |   |   | 1-2 Years |   |   | 2-3 Years |   |   | 3-4 Years |   |   | 4-5 Years |   |   | More than 5 years |   |
|------------------------------------|--------|--------|--------|--------|------------------|--------|--------|-----------|--------|--------|-----------|--------|--------|-----------|--------|--------|-----------|--------|--------|-------------------|--------|
| Operating lease obligations (1)    |   | $      | 3,513  |   |             | $      | 855    |      |   | $      | 725       |   |   | $         | 621    |   |      | $      | 620    |              |   | $ | 639 |   |   | $ | 53 |   |
| Purchase obligations               |   |   | 8,262  |   |             |   | 7,991  |      |   |   | 5         |   |   |      | 266    |   |      |   | -      |              |   |   | - |   |   |   | - |   |
| Total Contractual Cash Obligations |   | $      | 11,775 |   |             | $      | 8,846  |      |   | $      | 730       |   |   | $         | 887    |   |      | $      | 620    |              |   | $ | 639 |   |   | $ | 53 |   |

|                         |   | Fiscal Years Ended |      |
|------------------------------|--------|--------------------|-----------|
|                         |   | April 2, 2011      |      |   | April 3, 2010 |   |
| Number of shares repurchased |   |               | 273,000   |   |   |   | - |   |
| Cost of shares repurchased   |   | $                  | 6,267,000 |   |   | $ | - |   |
| Average price per share      |   | $                  | 22.97     |   |   | $ | - |   |

----

----

|                                     |   | Quarters Ended                           |   |
|------------------------------------------|--------|------------------------------------------|--------|
|                                     |   | Apr 2,                                   |   |   | Jan 1, |   |   | Oct 2, |   |   | Jul 3, |   |   | Apr 3, |   |   | Dec 26, |   |   | Sep 26, |   |   | Jun 27, |   |
|                                     |   | 2011                                     |   |   | 2011 |   |   | 2010 |   |   | 2010 |   |   | 2010 |   |   | 2009 |   |   | 2009 |   |   | 2009 |   |
| (Unaudited)                              |   | (in thousands, except per share amounts) |   |
| Statement of Income Data:                |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net sales                                |   | $                                        | 17,983 |   |   | $ | 19,675 |   |   | $ | 22,359 |   |   | $ | 23,155 |   |   | $ | 20,559 |   |   | $ | 16,735 |   |   | $ | 15,875 |   |   | $ | 13,555 |   |
| Costs of sales                           |   |                                     | 8,863  |   |   |   | 9,341 |   |   |   | 9,819 |   |   |   | 9,961 |   |   |   | 11,106 |   |   |   | 8,717 |   |   |   | 8,474 |   |   |   | 6,425 |   |
| Gross profit                             |   |                                     | 9,120  |   |   |   | 10,334 |   |   |   | 12,540 |   |   |   | 13,194 |   |   |   | 9,453 |   |   |   | 8,018 |   |   |   | 7,401 |   |   |   | 7,130 |   |
| Income from operations                   |   |                                     | 1,571  |   |   |   | 3,141 |   |   |   | 5,059 |   |   |   | 6,372 |   |   |   | 1,706 |   |   |   | 1,078 |   |   |   | 639 |   |   |   | 335 |   |
| Income before provision for income taxes |   |                                     | 2,129  |   |   |   | 3,586 |   |   |   | 5,782 |   |   |   | 6,283 |   |   |   | 2,180 |   |   |   | 1,583 |   |   |   | 1,492 |   |   |   | 1,121 |   |
| Net income                               |   | $                                        | 1,492  |   |   | $ | 2,860 |   |   | $ | 3,822 |   |   | $ | 4,108 |   |   | $ | 1,163 |   |   | $ | 1,974 |   |   | $ | 1,083 |   |   | $ | 905 |   |
| Net income per share(1)                  |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Basic                                    |   | $                                        | 0.12   |   |   | $ | 0.22 |   |   | $ | 0.29 |   |   | $ | 0.32 |   |   | $ | 0.09 |   |   | $ | 0.15 |   |   | $ | 0.08 |   |   | $ | 0.07 |   |
| Diluted                                  |   | $                                        | 0.12   |   |   | $ | 0.22 |   |   | $ | 0.29 |   |   | $ | 0.32 |   |   | $ | 0.09 |   |   | $ | 0.15 |   |   | $ | 0.08 |   |   | $ | 0.07 |   |

----

----

----

----

| 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 | 42 |
|                                                                 |                                                    |   |   |
| 2.                                                                   | Consolidated Financial Statements:                      |   |
|                                                                 |                                                    | Consolidated Balance Sheets as of April 2, 2011 and April 3, 2010 | 43 |
|                                                                 |                                                    | For the three years ended April 2, 2011, April 3, 2010 and March 28, 2009: |   |
|                                                                 |                                                    | Consolidated Statements of Income | 44 |
|                                                                 |                                                    | Consolidated Statements of Shareholders' Equity | 45 |
|                                                                 |                                                    | Consolidated Statements of Cash Flows | 46 |
|                                                                 |                                                    | Notes to Consolidated Financial Statements | 47 |

| 3.     | Exhibits.             |
|--------|-----------------------|
|   |                  |   |
|   | Exhibit               | Exhibit Description |
|   |                  |   |
|   | 3.1 (1)               | Restated Articles of Incorporation of Registrant filed May 21, 1980. |
|   |                  |   |
|   | 3.2 (1)               | Certificate of Amendment of Articles of Incorporation filed April 16, 1981. |
|   |                  |   |
|   | 3.3 (1)               | Certificate of Amendment of Articles of Incorporation filed September 30, 1983. |
|   |                  |   |
|   | 3.4 (1)               | Certificate of Amendment of Articles of Incorporation filed October 14, 1988. |
|   |                  |   |
|   | 3.5 (2)               | Amended and Restated Bylaws of Registrant. |
|   |                  |   |
|   | 10.1 (1)*             | Non-Qualified Deferred Compensation Plan, which became effective January 1, 1996, as most recently amended on December 1, 2008. |
|   |                  |   |
|   | 10.2 (1)              | 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; 2/1/99; and 1/23/04) 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 (3)              | Sixth Amendment to Lease of 71 Vista Montana, San Jose, California dated April 16, 2010, with Sobrato Development Companies #871, as landlord, and Supertex, Inc., as assignee/tenant. |
|   |                  |   |
|   | 10.4 (1)              | 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 (4)*   | 2000 Employee Stock Purchase Plan. |
|   |                  |   |
|   | 10.6 (5)*             | 2001 Stock Option Plan. |
|   |                  |   |
|   | 10.7 (6)*             | 2009 Equity Incentive Plan. |

----

|      | 10.8 (1)*                                                                                | 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)                                                                                      | Exhibits 3.1, 3.2, 3.3, 3.4, 10.1, 10.2, 10.4, and 10.8 to Registrant’s Annual Report on Form 10-K dated April 3, 2010, filed with the SEC on June 11, 2010 are hereby incorporated by reference. |
|      |                                                                                     |                                                                                                                                                                                                    |
|      | (2)                                                                                      | 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.                                     |
|      |                                                                                     |                                                                                                                                                                                                    |
|      | (3)                                                                                      | 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.                                           |
|      |                                                                                     |                                                                                                                                                                                                    |
|      | (4)                                                                                      | 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.    |
|      |                                                                                     |                                                                                                                                                                                                    |
|      | (5)                                                                                      | 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.                                         |
|      |                                                                                     |                                                                                                                                                                                                    |
|      | (6)                                                                                      | 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 21.1, 23.1, 24.1, 31.1, 31.2, 32.1 and 32.2 are filed herewith.                 |

----

|                            |   Supertex, Inc. |
|---------------------------------|-----------------------|
|                            |                  |   |   |
|                            |                  |   |   |
| Dated:  June 13, 2011 |                  |  /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 13, 2011 |
| (Henry C. Pao)                               |   | (Principle Executive Officer)                              |   |          |
|                                         |   |                                                       |   |          |
| /s/ PHILLIP A. KAGEL                         |   | Vice President, Finance and Chief Financial Officer        |   | June 13, 2011 |
| (Phillip A. Kagel)                           |   | (Principal Financial and Accounting Officer)               |   |          |
|                                         |   |                                                       |   |          |
| /s/ BENEDICT C. K. CHOY(Benedict C. K. Choy) |   | Director and Senior Vice President, Technology Development |   | June 13, 2011 |
|                                         |   |                                                       |   |          |
|                                         |   |                                                       |   |          |
| /s/ W. MARK LOVELESS                         |   | Director                                                   |   | June 13, 2011 |
| (W. Mark Loveless)                           |   |                                                       |   |          |
|                                         |   |                                                       |   |          |
| /s/ ELLIOTT SCHLAM                           |   | Director                                                   |   | June 13, 2011 |
| (Elliott Schlam)                             |   |                                                       |   |          |
|                                         |   |                                                       |   |          |
| /s/ MILTON FENG                              |   | Director                                                   |   | June 13, 2011 |
| (Milton Feng)                                |   |                                                       |   |          |
|                                         |   |                                                       |   |          |

----

----

|                                                                                                                                                   |   | April 2, 2011 |    |   | April 3, 2010 |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------|---------|--------|---------------|--------|
| ASSETS                                                                                                                                                 |   |          |    |   |          |   |
| Current Assets:                                                                                                                                        |   |          |    |   |          |   |
| Cash and cash equivalents                                                                                                                              |   | $             | 23,962  |   |          | $      | 10,153 |   |
| Short-term investments                                                                                                                                 |   |          | 109,760 |   |          |   | 76,860 |   |
| Trade accounts receivable, net                                                                                                                         |   |          | 8,100   |   |          |   | 10,786 |   |
| Inventories                                                                                                                                            |   |          | 20,600  |   |          |   | 15,450 |   |
| Prepaid expenses and other current assets                                                                                                              |   |          | 2,975   |   |          |   | 3,726 |   |
| Prepaid income taxes                                                                                                                                   |   |          | 6,461   |   |          |   | 2,456 |   |
| Deferred income taxes                                                                                                                                  |   |          | 7,228   |   |          |   | 8,162 |   |
| Total current assets                                                                                                                                   |   |          | 179,086 |   |          |   | 127,593 |   |
| Long-term investments                                                                                                                                  |   |          | 30,200  |   |          |   | 65,000 |   |
| Property, plant and equipment, net                                                                                                                     |   |          | 5,708   |   |          |   | 6,791 |   |
| Other assets                                                                                                                                           |   |          | 622     |   |          |   | 580 |   |
| Deferred income taxes                                                                                                                                  |   |          | 4,980   |   |          |   | 5,254 |   |
| Total assets                                                                                                                                           |   | $             | 220,596 |   |          | $      | 205,218 |   |
|                                                                                                                                                   |   |          |    |   |          |   |   |   |
|                                                                                                                                                   |   |          |    |   |          |   |   |   |
| LIABILITIES AND SHAREHOLDERS’ EQUITY                                                                                                             |   |          |    |   |          |   |   |   |
| Current Liabilities:                                                                                                                                   |   |          |    |   |          |   |   |   |
| Trade accounts payable                                                                                                                                 |   | $             | 3,283   |   |          | $      | 3,748 |   |
| Accrued salaries and employee benefits                                                                                                                 |   |          | 12,430  |   |          |   | 11,430 |   |
| Other accrued liabilities                                                                                                                              |   |          | 772     |   |          |   | 1,167 |   |
| Deferred revenue                                                                                                                                       |   |          | 3,664   |   |          |   | 3,962 |   |
| Income taxes payable                                                                                                                                   |   |          | 2,264   |   |          |   | 15 |   |
| Total current liabilities                                                                                                                              |   |          | 22,413  |   |          |   | 20,322 |   |
| Income taxes payable, noncurrent                                                                                                                       |   |          | 4,974   |   |          |   | 4,520 |   |
| Other accrued liabilities, noncurrent                                                                                                                  |   |          | 290     |   |          |   | - |   |
| Total liabilities                                                                                                                                      |   |          | 27,677  |   |          |   | 24,842 |   |
|                                                                                                                                                   |   |          |    |   |          |   |   |   |
| 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 12,808 shares as of April 2, 2011 and 12,944 shares as of April 3, 2010 |   |          | 68,499  |   |          |   | 64,296 |   |
| Accumulated other comprehensive loss                                                                                                                   |   |          | (1,683  | )      |          |   | (2,566 | ) |
| Retained earnings                                                                                                                                      |   |          | 126,103 |   |          |   | 118,646 |   |
| Total shareholders' equity                                                                                                                             |   |          | 192,919 |   |          |   | 180,376 |   |
| Total liabilities and shareholders' equity                                                                                                             |   | $             | 220,596 |   |          | $      | 205,218 |   |

----

|                                     |   | Fiscal Years Ended |   |
|------------------------------------------|--------|--------------------|--------|
|                                     |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Net sales                                |   | $                  | 83,172 |   |   | $ | 66,724 |   |   | $ | 78,810 |   |
| Cost and expenses:                       |   |               |   |   |   |   |   |   |   |   |   |   |
| Cost of sales                            |   |               | 37,984 |   |   |   | 34,722 |   |   |   | 36,931 |   |
| Research and development                 |   |               | 14,851 |   |   |   | 15,404 |   |   |   | 14,553 |   |
| Selling, general and administrative      |   |               | 14,194 |   |   |   | 12,840 |   |   |   | 13,332 |   |
| Total costs and expenses                 |   |               | 67,029 |   |   |   | 62,966 |   |   |   | 64,816 |   |
| Income from operations                   |   |               | 16,143 |   |   |   | 3,758 |   |   |   | 13,994 |   |
| Interest and other income:               |   |               |   |   |   |   |   |   |   |   |   |   |
| Interest income                          |   |               | 812    |   |   |   | 1,058 |   |   |   | 3,209 |   |
| Other income(expense), net               |   |               | 825    |   |   |   | 1,560 |   |   |   | (1,437 | ) |
| Income before provision for income taxes |   |               | 17,780 |   |   |   | 6,376 |   |   |   | 15,766 |   |
| Provision for income taxes               |   |               | 5,498  |   |   |   | 1,251 |   |   |   | 3,221 |   |
| Net income                               |   | $                  | 12,282 |   |   | $ | 5,125 |   |   | $ | 12,545 |   |
|                                     |   |               |   |   |   |   |   |   |   |   |   |   |
| Net income per share                     |   |               |   |   |   |   |   |   |   |   |   |   |
| Basic                                    |   | $                  | 0.95   |   |   | $ | 0.40 |   |   | $ | 0.98 |   |
| Diluted                                  |   | $                  | 0.94   |   |   | $ | 0.39 |   |   | $ | 0.97 |   |
| Shares used in per share computation     |   |               |   |   |   |   |   |   |   |   |   |   |
| Basic                                    |   |               | 12,976 |   |   |   | 12,912 |   |   |   | 12,836 |   |
| Diluted                                  |   |               | 13,030 |   |   |   | 12,995 |   |   |   | 12,927 |   |

----

|                                                              |   | Number of Common Shares |         |   | Stock Amount |   |         | Accumulated Other Comprehensive Loss |   |   | Retained Earnings |   |   | Share-holders’ Equity |    |   | Comprehensive Income |   |
|-------------------------------------------------------------------|--------|-------------------------|--------------|--------|--------------|--------|--------------|--------------------------------------|--------|--------|-------------------|--------|--------|-----------------------------|---------|--------|----------------------|--------|
|                                                              |   |                    |         |   |         |   |         |                                 |   |   |              |   |   |                        |    |   |                 |   |
| Balance, March 29, 2008                                           |   |                    | 12,749       |   |         | $      | 54,968       |                                 |   | $      | (4,069            | )      |   | $                           | 100,976 |   |                 | $      | 151,875 |   |   |   |   |
| 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 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 gain 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 |   |
| Stock options exercised                                           |   |                    | 130          |   |         |   | 2,355        |                                 |   |   | -                 |   |   |                        | -       |   |                 |   | 2,355 |   |   |   |   |   |
| Issuance of shares under ESPP                                     |   |                    | 7            |   |         |   | 178          |                                 |   |   | -                 |   |   |                        | -       |   |                 |   | 178 |   |   |   |   |   |
| Stock repurchase                                                  |   |                    | (273         | )      |         |   | (1,442       | )                                    |   |   | -                 |   |   |                        | (4,825  | )      |                 |   | (6,267 | ) |   |   |   |   |
| Stock-based compensation expense                                  |   |                    | -            |   |         |   | 3,099        |                                 |   |   | -                 |   |   |                        | -       |   |                 |   | 3,099 |   |   |   |   |   |
| Excess tax benefit from stock-based compensation plans            |   |                    | -            |   |         |   | 13           |                                 |   |   | -                 |   |   |                        | -       |   |                 |   | 13 |   |   |   |   |   |
| Net income                                                        |   |                    | -            |   |         |   | -            |                                 |   |   | -                 |   |   |                        | 12,282  |   |                 |   | 12,282 |   |   |   | 12,282 |   |
| Unrealized gain from available-for-sale investments, net of taxes |   |                    | -            |   |         |   | -            |                                 |   |   | 883               |   |   |                        | -       |   |                 |   | 883 |   |   |   | 883 |   |
| Balance, April 2, 2011                                            |   |                    | 12,808       |   |         | $      | 68,499       |                                 |   | $      | (1,683            | )      |   | $                           | 126,103 |   |                 | $      | 192,919 |   |   | $ | 13,165 |   |

----

|                                                                                         |   | Fiscal Years Ended |     |
|----------------------------------------------------------------------------------------------|--------|--------------------|----------|
| CASH FLOWS FROM OPERATING ACTIVITIES                                                         |   | April 2, 2011      |     |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Net income                                                                                   |   | $                  | 12,282   |   |   | $ | 5,125 |   |   | $ | 12,545 |   |
| Non-cash adjustments to net income:                                                          |   |               |     |   |   |   |   |   |   |   |   |   |
| Depreciation and amortization                                                                |   |               | 2,303    |   |   |   | 2,952 |   |   |   | 3,397 |   |
| Provision for doubtful accounts and sales returns                                            |   |               | 525      |   |   |   | 488 |   |   |   | 646 |   |
| Provision for excess and obsolete inventories                                                |   |               | 2,859    |   |   |   | 3,448 |   |   |   | 2,322 |   |
| Deferred income taxes                                                                        |   |               | 484      |   |   |   | (929 | ) |   |   | 1,071 |   |
| Stock-based compensation                                                                     |   |               | 3,099    |   |   |   | 3,470 |   |   |   | 2,761 |   |
| Tax benefit related to stock-based compensation plans                                        |   |               | 13       |   |   |   | 63 |   |   |   | 149 |   |
| Excess tax benefit related to stock-based compensation                                       |   |               | (7       | ) |   |   | (26 | ) |   |   | (57 | ) |
| Unrealized (gain) loss from short-term investments, categorized as trading                   |   |               | (689     | ) |   |   | (1,607 | ) |   |   | 1,464 |   |
| (Gain) loss on disposal of property, plant and equipment                                     |   |               | (98      | ) |   |   | 5 |   |   |   | 23 |   |
| Changes in operating assets and liabilities:                                                 |   |               |     |   |   |   |   |   |   |   |   |   |
| Trade accounts receivable                                                                    |   |               | 2,125    |   |   |   | (3,183 | ) |   |   | 4,546 |   |
| Inventories                                                                                  |   |               | (8,009   | ) |   |   | (3,198 | ) |   |   | (986 | ) |
| Prepaid expenses and other assets                                                            |   |               | 745      |   |   |   | (2,239 | ) |   |   | 1,867 |   |
| Prepaid income taxes                                                                         |   |               | (4,005   | ) |   |   | 2,132 |   |   |   | (4,588 | ) |
| Trade accounts payable and accrued expenses                                                  |   |               | 418      |   |   |   | 3,540 |   |   |   | (4,442 | ) |
| Deferred revenue                                                                             |   |               | (298     | ) |   |   | 686 |   |   |   | (1,073 | ) |
| Income taxes payable                                                                         |   |               | 2,703    |   |   |   | (2,186 | ) |   |   | 2,761 |   |
| Net cash provided by operating activities                                                    |   |               | 14,450   |   |   |   | 8,541 |   |   |   | 22,406 |   |
| CASH FLOWS FROM INVESTING ACTIVITIES                                                         |   |               |     |   |   |   |   |   |   |   |   |   |
| Purchases of property, plant and equipment, net                                              |   |               | (1,210   | ) |   |   | (1,201 | ) |   |   | (1,971 | ) |
| Proceeds from disposal of property, plant and equipment                                      |   |               | 100      |   |   |   | - |   |   |   | - |   |
| Purchases of investments                                                                     |   |               | (174,665 | ) |   |   | (86,233 | ) |   |   | (34,529 | ) |
| Sales of investments                                                                         |   |               | 53,699   |   |   |   | 11,143 |   |   |   | 6,558 |   |
|   Maturities of investments                                                        |   |               | 125,162  |   |   |   | 52,419 |   |   |   | 12,150 |   |
|  Net cash provided by (used in) investing activities                                    |   |               | 3,086    |   |   |   | (23,872 | ) |   |   | (17,792 | ) |
| CASH FLOWS FROM FINANCING ACTIVITIES                                                         |   |               |     |   |   |   |   |   |   |   |   |   |
| Proceeds from exercise of stock options and employee stock purchase plan                     |   |               | 2,533    |   |   |   | 1,214 |   |   |   | 1,671 |   |
| Stock repurchased                                                                            |   |               | (6,267   | ) |   |   | - |   |   |   | - |   |
| Excess tax benefit related to stock-based compensation                                       |   |               | 7        |   |   |   | 26 |   |   |   | 57 |   |
| Net cash (used in) provided by financing activities                                          |   |               | (3,727   | ) |   |   | 1,240 |   |   |   | 1,728 |   |
| NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                         |   |               | 13,809   |   |   |   | (14,091 | ) |   |   | 6,342 |   |
|                                                                                         |   |               |     |   |   |   |   |   |   |   |   |   |
| CASH AND CASH EQUIVALENTS:                                                                   |   |               |     |   |   |   |   |   |   |   |   |   |
| Beginning of period                                                                          |   |               | 10,153   |   |   |   | 24,244 |   |   |   | 17,902 |   |
| End of period                                                                                |   | $                  | 23,962   |   |   | $ | 10,153 |   |   | $ | 24,244 |   |
|                                                                                         |   |               |     |   |   |   |   |   |   |   |   |   |
| Supplemental cash flow disclosures:                                                          |   |               |     |   |   |   |   |   |   |   |   |   |
| Income taxes paid, net of refunds                                                            |   | $                  | 5,089    |   |   | $ | 3,479 |   |   | $ | 2,985 |   |
|                                                                                         |   |               |     |   |   |   |   |   |   |   |   |   |
| Supplemental disclosure of non-cash activities:                                              |   |               |     |   |   |   |   |   |   |   |   |   |
| Additions to property, plant and equipment included in accounts payable and accrued expenses |   | $                  | 12       |   |   | $ | 74 |   |   | $ | 6 |   |

----

----

----

----

----

----

----

----

|                                 |   | April 2, 2011           |   |
|--------------------------------------|--------|-------------------------|--------|
|                                 |   | Fair value measurements |   |
| Assets                               |   | Level 1                 |   |   | Level 2 |   |   | Level 3 |   |   | Total |   |
| Money market funds                   |   | $                       | 10,681 | (1) |   | $ | - |   |   | $ | - |   |   | $ | 10,681 |   |
| Municipal bonds                      |   |                    | -      |   |   |   | 62,768 | (2) |   |   | - |   |   |   | 62,768 |   |
| Discount notes                       |   |                    | -      |   |   |   | 3,998 |   |   |   | - |   |   |   | 3,998 |   |
| Corporate bonds                      |   |                    | -      |   |   |   | 28,177 | (3) |   |   | - |   |   |   | 28,177 |   |
| Government agency bonds              |   |                    | -      |   |   |   | 10,816 | (4) |   |   | - |   |   |   | 10,816 |   |
| Certificate of deposits              |   |                    | -      |   |   |   | 748 |   |   |   | - |   |   |   | 748 |   |
| Equity mutual funds related to NQDCP |   |                    | 8,157  |   |   |   | - |   |   |   | - |   |   |   | 8,157 |   |
| Long-term investments in ARS         |   |                    | -      |   |   |   | - |   |   |   | 30,200 |   |   |   | 30,200 |   |
| Total assets at fair value           |   | $                       | 18,838 |   |   | $ | 106,507 |   |   | $ | 30,200 |   |   | $ | 155,545 |   |
|                                 |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Liabilities                          |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Obligation related to NQDCP          |   | $                       | 8,157  |   |   | $ | - |   |   | $ | - |   |   | $ | 8,157 |   |

|   | _________________________ |
|--------|---------------------------|

|                                 |   | 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           |   | $                       | 14,811 |   |   | $ | 69,390 |   |   | $ | 65,000 |   |   | $ | 149,201 |   |
|                                 |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Liabilities                          |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Obligation related to NQDCP          |   | $                       | 7,470  |   |   | $ | - |   |   | $ | - |   |   | $ | 7,470 |   |

| Fair value measurements of assets using level 3 inputs             |   | Long-term investments in ARS |    |
|--------------------------------------------------------------------|--------|------------------------------|---------|
| Beginning balance at April 3, 2010                                 |   | $                            | 65,000  |   |
| Redemption of investments in ARS                                   |   |                         | (36,450 | ) |
| Unrealized loss reversed in "Accumulated other comprehensive loss" |   |                         | 1,650   |   |
| Ending balance at April 2, 2011                                    |   | $                            | 30,200  |   |

----

|                            |   | April 2, 2011 |   |   | April 3, 2010 |   |
|---------------------------------|--------|---------------|--------|--------|---------------|--------|
| Cash                            |   | $             | 8,377  |   |          | $      | 2,812 |   |
| Cash equivalents:               |   |          |   |   |          |   |   |   |
| Money market funds              |   |          | 10,681 |   |          |   | 7,341 |   |
| Government agency Bonds         |   |          | 4,500  |   |          |   | - |   |
| Corporate bonds                 |   |          | 253    |   |          |   | - |   |
| Municipal bonds                 |   |          | 151    |   |          |   | - |   |
| Total cash and cash equivalents |   | $             | 23,962 |   |          | $      | 10,153 |   |

|                           |   | April 2, 2011 |    |
|--------------------------------|--------|---------------|---------|
|                           |   | Amortized     |    |   | Unrealized |   |   | Unrealized |   |   | Carrying |   |
|                           |   | Cost          |    |   | Gain |   |   | Loss |   |   | Value |   |
| Short-term investments:        |   |          |    |   |   |   |   |   |   |   |   |   |
| Trading securities:            |   | $             | 8,157   |   |   | $ | - |   |   | $ | - |   |   | $ | 8,157 |   |
| Available-for-sale securities: |   |          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Municipal  bonds     |   |          | 62,617  |   |   |   | 2 |   |   |   | (2 | ) |   |   | 62,617 |   |
| Discount notes                 |   |          | 3,998   |   |   |   | - |   |   |   | - |   |   |   | 3,998 |   |
| Corporate bonds                |   |          | 27,968  |   |   |   | - |   |   |   | (44 | ) |   |   | 27,924 |   |
| Government agency bonds        |   |          | 6,317   |   |   |   | - |   |   |   | (1 | ) |   |   | 6,316 |   |
| Certificates of deposits       |   |          | 749     |   |   |   | - |   |   |   | (1 | ) |   |   | 748 |   |
| Total short-term investments   |   | $             | 109,806 |   |   | $ | 2 |   |   | $ | (48 | ) |   | $ | 109,760 |   |
|                           |   |          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Long-term investments:         |   |          |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Available-for sale securities  |   | $             | 32,750  |   |   | $ | - |   |   | $ | (2,550 | ) |   | $ | 30,200 |   |

|                           |   | 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 |   |

----

|                                             |   | April 2, 2011 |    |   | April 3, 2010 |   |
|--------------------------------------------------|--------|---------------|---------|--------|---------------|--------|
| Short-term investment:                           |   |          |    |   |          |   |
| Trading securities:                              |   |          |    |   |          |   |
|    Due in one year or less        |   | $             | 8,157   |   |          | $      | 7,470 |   |
| Available-for-sale securities:                   |   |          |    |   |          |   |   |   |
| Due in one year or less                          |   |          | 62,919  |   |          |   | 69,390 |   |
| Due in one to two years                          |   |          | 38,684  |   |          |   | - |   |
| Total short-term investments                     |   | $             | 109,760 |   |          | $      | 76,860 |   |
| Long-term investment:                            |   |          |    |   |          |   |   |   |
| Available-for-sale securities at amortized cost: |   |          |    |   |          |   |   |   |
| Due after ten years                              |   | $             | 30,200  |   |          | $      | 65,000 |   |
| Total long-term investments                      |   | $             | 30,200  |   |          | $      | 65,000 |   |

----

| ·   | 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 2, 2011, 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 2, 2011; |
|--------------------|----------------------------------------------------------------------------|

| ·   | 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 redemptions of $12,150,000 and $19,250,000 at par value in fiscal 2009 and 2010, respectively. During fiscal 2011 the Company received seven payments totaling $36,450,000 comprising redemptions of ARS at par value. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                    |   | April 2, 2011 |   |   | April 3, 2010 |   |
|---------------------------------------------------------|--------|---------------|--------|--------|---------------|--------|
| Accounts receivable                                     |   | $             | 8,581  |   |          | $      | 11,245 |   |
| Less: Allowance for doubtful accounts and sales returns |   |          | (481   | )      |          |   | (459 | ) |
| Total trade accounts receivable, net                    |   | $             | 8,100  |   |          | $      | 10,786 |   |

| Description                        |   | Balance at Beginning of Period |   |   | Additions Charged to Expense |   |   | Deductions and Other(1) |   |   | Balance at End of Period |   |
|------------------------------------|--------|--------------------------------|--------|--------|------------------------------|--------|--------|-------------------------|--------|--------|--------------------------|--------|
| Twelve months ended April 2, 2011  |   | $                              | 242    |   |                         | $      | 5      |                    |   | $      | -                        |   |   | $ | 247 |   |
| Twelve months ended April 3, 2010  |   | $                              | 495    |   |                         | $      | 57     |                    |   | $      | (310                     | )      |   | $ | 242 |   |
| Twelve months ended March 28, 2009 |   | $                              | 595    |   |                         | $      | (100   | )                       |   | $      | -                        |   |   | $ | 495 |   |

| Description                        |   | Balance at Beginning of Period |   |   | Additions Charged to Revenue |   |   | Deductions and Other(1) |   |   | Balance at End of Period |   |
|------------------------------------|--------|--------------------------------|--------|--------|------------------------------|--------|--------|-------------------------|--------|--------|--------------------------|--------|
| Twelve months ended April 2, 2011  |   | $                              | 217    |   |                         | $      | 556    |                    |   | $      | (539                     | )      |   | $ | 234 |   |
| Twelve months ended April 3, 2010  |   | $                              | 266    |   |                         | $      | 454    |                    |   | $      | (503                     | )      |   | $ | 217 |   |
| Twelve months ended March 28, 2009 |   | $                              | 483    |   |                         | $      | 636    |                    |   | $      | (853                     | )      |   | $ | 266 |   |

----

|                                              |   | April 2, 2011 |   |   | April 3, 2010 |   |
|---------------------------------------------------|--------|---------------|--------|--------|---------------|--------|
| Raw materials                                     |   | $             | 1,786  |   |          | $      | 1,221 |   |
| Work-in-process                                   |   |          | 12,880 |   |          |   | 9,978 |   |
| Finished goods                                    |   |          | 4,347  |   |          |   | 2,229 |   |
| Finished goods at distributors and on consignment |   |          | 1,587  |   |          |   | 2,022 |   |
| Total Inventories                                 |   | $             | 20,600 |   |          | $      | 15,450 |   |

|                                           |   | April 2, 2011 |    |   | April 3, 2010 |   |
|------------------------------------------------|--------|---------------|---------|--------|---------------|--------|
| Land                                           |   | $             | 825     |   |          | $      | 825 |   |
| Machinery and equipment                        |   |          | 38,171  |   |          |   | 37,223 |   |
| Leasehold improvements                         |   |          | 3,044   |   |          |   | 2,994 |   |
| Building                                       |   |          | 2,563   |   |          |   | 2,563 |   |
| Furniture and fixtures                         |   |          | 339     |   |          |   | 332 |   |
|                                           |   |          | 44,942  |   |          |   | 43,937 |   |
| Less accumulated depreciation and amortization |   |          | (39,234 | )      |          |   | (37,146 | ) |
| Property, plant and equipment, net             |   | $             | 5,708   |   |          | $      | 6,791 |   |

----

|                                     |   | Fiscal Years Ended |   |
|------------------------------------------|--------|--------------------|--------|
|                                     |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| United States                            |   | $                  | 15,663 |   |   | $ | 4,690 |   |   | $ | 11,852 |   |
| Foreign                                  |   |               | 2,117  |   |   |   | 1,686 |   |   |   | 3,914 |   |
| Income before provision for income taxes |   | $                  | 17,780 |   |   | $ | 6,376 |   |   | $ | 15,766 |   |

|                             |   | Fiscal Years Ended |   |
|----------------------------------|--------|--------------------|--------|
|                             |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Current:                         |   |               |   |   |   |   |   |   |   |
| Federal                          |   | $                  | 4,416  |   |   | $ | 2,091 |   |   | $ | 383 |   |
| State                            |   |               | (33    | ) |   |   | 15 |   |   |   | 938 |   |
| Non-US                           |   |               | 716    |   |   |   | 76 |   |   |   | 883 |   |
|                             |   |               | 5,099  |   |   |   | 2,182 |   |   |   | 2,204 |   |
| Deferred:                        |   |               |   |   |   |   |   |   |   |   |   |   |
| Federal                          |   |               | (593   | ) |   |   | (882 | ) |   |   | 927 |   |
| State                            |   |               | 998    |   |   |   | 6 |   |   |   | 132 |   |
| Non-US                           |   |               | (6     | ) |   |   | (55 | ) |   |   | (42 | ) |
|                             |   |               | 399    |   |   |   | (931 | ) |   |   | 1,017 |   |
| Total provision for income taxes |   | $                  | 5,498  |   |   | $ | 1,251 |   |   | $ | 3,221 |   |

----

|                                         |   | Fiscal Years Ended |   |
|----------------------------------------------|--------|--------------------|--------|
|                                         |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Tax provision at US statutory rates          |   |               | 35     | % |   |   | 35 | % |   |   | 35 | % |
| State tax provision, net of Federal benefits |   |               | 7      |   |   |   | 3 |   |   |   | 4 |   |
| Tax credits                                  |   |               | (3     | ) |   |   | (12 | ) |   |   | (4 | ) |
| Domestic production activity deduction       |   |               | (5     | ) |   |   | (1 | ) |   |   | (3 | ) |
| Foreign earnings tax differential            |   |               | -      |   |   |   | (1 | ) |   |   | (3 | ) |
| Tax exempt investment income                 |   |               | (1     | ) |   |   | (5 | ) |   |   | (6 | ) |
| Stock based compensation                     |   |               | -      |   |   |   | 4 |   |   |   | 1 |   |
| IRS settlement                               |   |               | -      |   |   |   | - |   |   |   | (2 | ) |
| Other                                        |   |               | (2     | ) |   |   | (3 | ) |   |   | (2 | ) |
| Effective income tax rate                    |   |               | 31     | % |   |   | 20 | % |   |   | 20 | % |

|                                               |   | Fiscal Years Ended |   |
|----------------------------------------------------|--------|--------------------|--------|
| Deferred tax assets:                               |   | April 2, 2011      |   |   | April 3, 2010 |   |
| Inventory write downs                              |   | $                  | 2,928  |   |   | $ | 3,431 |   |
| Temporary investment impairment                    |   |               | 941    |   |   |   | 1,632 |   |
| Accrued liabilities                                |   |               | 2,946  |   |   |   | 3,028 |   |
| Depreciation and amortization                      |   |               | 624    |   |   |   | 850 |   |
| Stock compensation                                 |   |               | 2,606  |   |   |   | 1,920 |   |
| Deferred revenue on shipments to distributors      |   |               | 593    |   |   |   | 656 |   |
| Allowances for doubtful accounts and sales returns |   |               | 145    |   |   |   | 169 |   |
| Capital Loss                                       |   |               | -      |   |   |   | 282 |   |
| Accrued employee benefits                          |   |               | 876    |   |   |   | 878 |   |
| Other                                              |   |               | 973    |   |   |   | 1,386 |   |
| Gross deferred tax assets                          |   |               | 12,632 |   |   |   | 14,232 |   |
| Valuation allowance                                |   |               | (424   | ) |   |   | (816 | ) |
| Net deferred tax assets                            |   | $                  | 12,208 |   |   | $ | 13,416 |   |

----

| Description                        |   | Balance at Beginning of Period |   |   | Charge(1) |   |   | Deductions and Other |   |   | Balance at End of Period |   |
|------------------------------------|--------|--------------------------------|--------|--------|-----------|--------|--------|----------------------|--------|--------|--------------------------|--------|
| Twelve months ended April 2, 2011  |   | $                              | 816    |   |      | $      | 1,161  |                 |   | $      | (1,553                   | )      |   | $ | 424 |   |
| Twelve months ended April 3, 2010  |   | $                              | 283    |   |      | $      | 534    |                 |   | $      | (1                       | )      |   | $ | 816 |   |
| Twelve months ended March 28, 2009 |   | $                              | 283    |   |      | $      | -      |                 |   | $      | -                        |   |   | $ | 283 |   |

|  (1) | A valuation allowance was placed on the Company’s California deferred tax assets. |
|-----------|-----------------------------------------------------------------------------------------|

|                                                                              |   | Fiscal Years Ended |   |
|-----------------------------------------------------------------------------------|--------|--------------------|--------|
|                                                                              |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Beginning balance                                                                 |   | $                  | 4,142  |   |   | $ | 4,219 |   |   | $ | 3,941 |   |
| Increases (decreases) of unrecognized tax benefits related to prior years' UTB    |   |               | 141    |   |   |   | (90 | ) |   |   | 634 |   |
| Increases (decreases) of unrecognized tax benefits related to current year's UTB  |   |               | 481    |   |   |   | 387 |   |   |   | 803 |   |
| Increases (decreases) of unrecognized tax benefits related to settlements         |   |               | -      |   |   |   | - |   |   |   | (648 | ) |
| Reductions to unrecognized tax benefits related to lapsing statute of limitations |   |               | (712   | ) |   |   | (374 | ) |   |   | (511 | ) |
| Ending balance                                                                    |   | $                  | 4,052  |   |   | $ | 4,142 |   |   | $ | 4,219 |   |

----

|                                                     |   | April 2, 2011 |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
|----------------------------------------------------------|--------|---------------|--------|--------|---------------|--------|--------|----------------|--------|
| Net income                                               |   | $             | 12,282 |   |          | $      | 5,125  |           |   | $ | 12,545 |   |
| Unrealized gain (loss) on available-for-sale investments |   |          | 1,607  |   |          |   | 4,791  |           |   |   | (4,925 | ) |
| Deferred income taxes                                    |   |          | (724   | )      |          |   | (1,863 | )              |   |   | 3,500 |  (1) |
| Comprehensive income                                     |   | $             | 13,165 |   |          | $      | 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 fiscal 2008. |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                         |   | Fiscal Years Ended |      |
|------------------------------|--------|--------------------|-----------|
|                         |   | April 2, 2011      |      |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Number of shares repurchased |   |               | 273,000   |   |   |   | - |   |   |   | - |   |
| Cost of shares repurchased   |   | $                  | 6,267,000 |   |   | $ | - |   |   | $ | - |   |
| Average price per share      |   | $                  | 22,97     |   |   | $ | - |   |   | $ | - |   |

----

----

|                    |   |                |      |   | Options Outstanding |   |
|-------------------------|--------|---------------------|-----------|--------|---------------------|--------|
|                    |   | Available For Grant |      |   | Shares              |   |   | Price Per Share |   |   | Weighted Average Exercise Price per share |   |
| 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 |   |
| Granted                 |   |                | (285,040  | )      |                |   | 285,040 |   |   |   | 22.01 | - |   | 27.23 |   |   |   | 23.63 |   |
| Exercised               |   |                | -         |   |                |   | (129,760 | ) |   |   | 15.67 | - |   | 25.30 |   |   |   | 18.15 |   |
| Canceled                |   |                | 145,600   |   |                |   | (145,600 | ) |   |   | 20.85 | - |   | 41.05 |   |   |   | 25.75 |   |
| Balance, April 2, 2011  |   |                | 977,849   |   |                |   | 1,454,622 |   |   | $ | 15.67 | - | $ | 46.92 |   |   | $ | 27.57 |   |

----

|                     |   |   |               |   | 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  |                |                                                |   | 94,320              |                            |   |   | 0.59 |   |   | $ | 17.16 |   |   |   | 94,320 |   |   | $ | 17.16 |   |
|                     | 20.00  | -      |               | 24.99  |                |                                                |   | 536,122             |                            |   |   | 8.08 |   |   |   | 21.35 |   |   |   | 167,442 |   |   |   | 20.96 |   |
|                     | 25.00  | -      |               | 29.99  |                |                                                |   | 328,320             |                            |   |   | 7.48 |   |   |   | 27.00 |   |   |   | 109,320 |   |   |   | 27.23 |   |
|                     | 30.00  | -      |               | 34.99  |                |                                                |   | 241,660             |                            |   |   | 3.63 |   |   |   | 33.77 |   |   |   | 204,860 |   |   |   | 33.74 |   |
|                     | 35.00  | -      |               | 39.99  |                |                                                |   | 97,900              |                            |   |   | 5.98 |   |   |   | 35.84 |   |   |   | 64,180 |   |   |   | 35.83 |   |
|                     | 40.00  | -      |               | 44.99  |                |                                                |   | 138,300             |                            |   |   | 2.54 |   |   |   | 40.91 |   |   |   | 112,060 |   |   |   | 40.92 |   |
|                     | 45.00  | -      |               | 46.92  |                |                                                |   | 18,000              |                            |   |   | 2.67 |   |   |   | 46.92 |   |   |   | 14,400 |   |   |   | 46.92 |   |
| $                        | 15.67  | -      | $                  | 46.92  |                |                                                |   | 1,454,622           |                            |   |   | 5.98 |   |   | $ | 27.57 |   |   |   | 766,582 |   |   | $ | 29.45 |   |

|                                         |   | Fiscal Years Ended |   |
|----------------------------------------------|--------|--------------------|--------|
|                                         |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Cost of sales                                |   | $                  | 676    |   |   | $ | 697 |   |   | $ | 558 |   |
| Research and development expenses            |   |               | 1,394  |   |   |   | 1,640 |   |   |   | 1,236 |   |
| Selling, general and administrative expenses |   |               | 1,029  |   |   |   | 1,133 |   |   |   | 967 |   |
| Total stock-based compensation expense       |   | $                  | 3,099  |   |   | $ | 3,470 |   |   | $ | 2,761 |   |

----

|                     |   | Fiscal Years Ended       |
|--------------------------|--------|--------------------------|
|                     |   | April 2, 2011            |   | April 3, 2010 |
|                     |   | Directors & Officers |   | All Other Employees |   | Directors & Officers |   | All Other Employees |
| Expected term (years)    |   | 6.00                     |   | 5.00 - 5.50 |   | 6.75 |   | 5.25 |
| Stock volatility         |   | 44.74% - 45.42%          |   | 44.50% - 46.38% |   | 45.89% |   | 46.05% - 47.27% |
| Risk free interest rates |   | 1.72% - 2.46%            |   | 1.41% - 2.29% |   | 2.91% |   | 2.12% - 2.64% |
| Dividend yields          |   | 0.0%                     |   | 0.0% |   | 0.0% |   | 0.0% |

|                                                             |   | Fiscal Years Ended |   |
|------------------------------------------------------------------|--------|--------------------|--------|
| (in thousands, except per share value)                           |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Net income                                                       |   | $                  | 12,282 |   |   | $ | 5,125 |   |   | $ | 12,545 |   |
| BASIC:                                                           |   |               |   |   |   |   |   |   |   |   |   |   |
| Weighted average shares outstanding                              |   |               | 12,976 |   |   |   | 12,912 |   |   |   | 12,836 |   |
| Net income per share                                             |   | $                  | 0.95   |   |   | $ | 0.40 |   |   | $ | 0.98 |   |
|                                                             |   |               |   |   |   |   |   |   |   |   |   |   |
| DILUTED:                                                         |   |               |   |   |   |   |   |   |   |   |   |   |
| Weighted average shares outstanding                              |   |               | 12,976 |   |   |   | 12,912 |   |   |   | 12,836 |   |
| Effect of dilutive securities:  stock options and ESPP |   |               | 54     |   |   |   | 83 |   |   |   | 91 |   |
| Weighted average shares outstanding                              |   |               | 13,030 |   |   |   | 12,995 |   |   |   | 12,927 |   |
| Net income per share                                             |   | $                  | 0.94   |   |   | $ | 0.39 |   |   | $ | 0.97 |   |

----

|                |   | Fiscal Years Ended |   |
|---------------------|--------|--------------------|--------|
| Net Sales           |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Medical Electronics |   | $                  | 30,635 |   |   | $ | 24,735 |   |   | $ | 33,368 |   |
| Imaging             |   |               | 16,369 |   |   |   | 13,407 |   |   |   | 20,550 |   |
| LED Lighting        |   |               | 13,242 |   |   |   | 14,850 |   |   |   | 4,973 |   |
| Telecom             |   |               | 9,376  |   |   |   | 5,252 |   |   |   | 7,139 |   |
| Industrial/Other    |   |               | 13,550 |   |   |   | 8,480 |   |   |   | 12,780 |   |
| Net Sales           |   | $                  | 83,172 |   |   | $ | 66,724 |   |   | $ | 78,810 |   |

|                   |   | Fiscal Years Ended |   |
|------------------------|--------|--------------------|--------|
| Net Sales              |   | April 2, 2011      |   |   | April 3, 2010 |   |   | March 28, 2009 |   |
| Asia (excluding China) |   | $                  | 24,622 |   |   | $ | 17,280 |   |   | $ | 20,670 |   |
| United States          |   |               | 24,304 |   |   |   | 21,043 |   |   |   | 29,301 |   |
| China                  |   |               | 21,120 |   |   |   | 21,060 |   |   |   | 17,968 |   |
| Europe                 |   |               | 12,503 |   |   |   | 7,022 |   |   |   | 10,093 |   |
| Other                  |   |               | 623    |   |   |   | 319 |   |   |   | 778 |   |
| Net Sales              |   | $                  | 83,172 |   |   | $ | 66,724 |   |   | $ | 78,810 |   |

|                                           |   | April 2, 2011 |   |   | April 3, 2010 |   |
|------------------------------------------------|--------|---------------|--------|--------|---------------|--------|
| United States                                  |   | $             | 4,525  |   |          | $      | 5,630 |   |
| Hong Kong                                      |   |          | 1,183  |   |          |   | 1,161 |   |
|   Property, plant and equipment, net |   | $             | 5,708  |   |          | $      | 6,791 |   |

----

| Payment Due by Fiscal Years |   | Operating Lease(1) |   |
|-----------------------------|--------|--------------------|--------|
| 2012                        |   | $                  | 855    |   |
| 2013                        |   |               | 725    |   |
| 2014                        |   |               | 621    |   |
| 2015                        |   |               | 620    |   |
| 2016                        |   |               | 639    |   |
| 2017                        |   |               | 53     |   |
|                        |   | $                  | 3,513  |   |

----

----

| 3.     | Exhibits.                                                                                |
|--------|------------------------------------------------------------------------------------------|
|   |                                                                                     |   |
|   | Exhibit                                                                                  | Exhibit Description |
|   |                                                                                     |   |
|   | 3.1 (1)                                                                                  | Restated Articles of Incorporation of Registrant filed May 21, 1980. |
|   |                                                                                     |   |
|   | 3.2 (1)                                                                                  | Certificate of Amendment of Articles of Incorporation filed April 16, 1981. |
|   |                                                                                     |   |
|   | 3.3 (1)                                                                                  | Certificate of Amendment of Articles of Incorporation filed September 30, 1983. |
|   |                                                                                     |   |
|   | 3.4 (1)                                                                                  | Certificate of Amendment of Articles of Incorporation filed October 14, 1988. |
|   |                                                                                     |   |
|   | 3.5 (2)                                                                                  | Amended and Restated Bylaws of Registrant. |
|   |                                                                                     |   |
|   | 10.1 (1)*                                                                                | Non-Qualified Deferred Compensation Plan, which became effective January 1, 1996, as most recently amended on December 1, 2008. |
|   |                                                                                     |   |
|   | 10.2 (1)                                                                                 | 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; 2/1/99; and 1/23/04) 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 (3)                                                                                 | Sixth Amendment to Lease of 71 Vista Montana, San Jose, California dated April 16, 2010, with Sobrato Development Companies #871, as landlord, and Supertex, Inc., as assignee/tenant. |
|   |                                                                                     |   |
|   | 10.4 (1)                                                                                 | 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 (4)*                                                                      | 2000 Employee Stock Purchase Plan. |
|   |                                                                                     |   |
|   | 10.6 (5)*                                                                                | 2001 Stock Option Plan. |
|   |                                                                                     |   |
|   | 10.7 (6)*                                                                                | 2009 Equity Incentive Plan. |
|   |                                                                                     |   |
|   | 10.8 (1)*                                                                                | 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)    | Exhibits 3.1, 3.2, 3.3, 3.4, 10.1, 10.2, 10.4, and 10.8 to Registrant’s Annual Report on Form 10-K dated April 3, 2010, filed with the SEC on June 11, 2010 are hereby incorporated by reference. |
|   |   |                                                                                                                                                                                                    |
|   | (2)    | 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.                                     |
|   |   |                                                                                                                                                                                                    |
|   | (3)    | 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.                                           |
|   |   |                                                                                                                                                                                                    |
|   | (4)    | 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.    |
|   |   |                                                                                                                                                                                                    |
|   | (5)    | 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.                                         |
|   |   |                                                                                                                                                                                                    |
|   | (6)    | 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.                                                                                                                                      |

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