Document:

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EXHIBIT 10.33         Indenture between the Company and Chase Manhattan
                      Bank And Trust Company, National Association, a national
                      banking association, dated February 15, 2000 (Incorporated
                      herein by reference from the Company's Annual Report on
                      Form 10-K for the fiscal year ended December 31, 1999
                      filed March 30, 2000, and accompanied by its table of
                      contents and the following cross-reference sheet)

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                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                               PAGE

                                               ARTICLE ONE
                         DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

<S>                  <C>                                                                       <C>
   SECTION 1.1       Definitions..................................................................1
   SECTION 1.2       Compliance Certificates and Opinions........................................12
   SECTION 1.3       Form of Documents Delivered to the Trustee..................................13
   SECTION 1.4       Acts of Holders of Securities...............................................13
   SECTION 1.5       Notices, Etc., to Trustee and Company.......................................15
   SECTION 1.6       Notice to Holders of Securities; Waiver.....................................16
   SECTION 1.7       Effect of Headings and Table of Contents....................................16
   SECTION 1.8       Successors and Assigns......................................................16
   SECTION 1.9       Separability Clause.........................................................17
   SECTION 1.10      Benefits of Indenture.......................................................17
   SECTION 1.11      Governing Law...............................................................17
   SECTION 1.12      Legal Holidays..............................................................17
   SECTION 1.13      Conflict with Trust Indenture Act...........................................17
   SECTION 1.14      Counterparts................................................................18

                                               ARTICLE TWO
                                             THE SECURITIES

   SECTION 2.1       Form Generally..............................................................18
   SECTION 2.2       Title and Terms.............................................................19
   SECTION 2.3       Denominations...............................................................20
   SECTION 2.4       Execution, Authentication, Delivery and Dating..............................20
   SECTION 2.5       Global Securities; Non-Global Securities....................................20
   SECTION 2.6       Registration, Registration of Transfer and Exchange; Restrictions on
                     Transfer....................................................................22
   SECTION 2.7       Mutilated, Destroyed, Lost or Stolen Securities.............................25
   SECTION 2.8       Payment of Interest; Interest Rights Preserved..............................26
   SECTION 2.9       Persons Deemed Owners.......................................................27
   SECTION 2.10      Cancellation................................................................27
   SECTION 2.11      Computation of Interest.....................................................27
   SECTION 2.12      CUSIP Numbers...............................................................27
</TABLE>

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<TABLE>
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                                            ARTICLE THREE
                                      SATISFACTION AND DISCHARGE

<S>                   <C>                                                                          <C>
   SECTION 3.1        Satisfaction and Discharge of Indenture......................................28
   SECTION 3.2        Application of Trust Money...................................................29

                                              ARTICLE FOUR
                                                REMEDIES

   SECTION 4.1        Events of Default............................................................29
   SECTION 4.2        Acceleration of Maturity; Rescission and Annulment...........................31
   SECTION 4.3        Collection of Indebtedness and Suits for Enforcement by Trustee..............32
   SECTION 4.4        Trustee May File Proofs of Claim.............................................33
   SECTION 4.5        Trustee May Enforce Claims without Possession of Securities..................34
   SECTION 4.6        Application of Money Collected...............................................34
   SECTION 4.7        Limitation on Suits..........................................................34
   SECTION 4.8        Unconditional Right of Holders to Receive Principal, Premium and
                             Interest and to Convert...............................................35
   SECTION 4.9        Restoration of Rights and Remedies...........................................35
   SECTION 4.10       Rights and Remedies Cumulative...............................................35
   SECTION 4.11       Delay or Omission Not Waiver.................................................36
   SECTION 4.12       Control by Holders of Securities.............................................36
   SECTION 4.13       Waiver of Past Defaults......................................................36
   SECTION 4.14       Undertaking for Costs........................................................37
   SECTION 4.15       Waiver of Stay, Usury or Extension Laws......................................37

                                              ARTICLE FIVE
                                               THE TRUSTEE

   SECTION 5.1        Certain Duties and Responsibilities..........................................37
   SECTION 5.2        Notice of Defaults...........................................................39
   SECTION 5.3        Certain Rights of Trustee....................................................39
   SECTION 5.4        Not Responsible for Recitals or Issuance of Securities.......................40
   SECTION 5.5        May Hold Securities, Act as Trustee under Other Indentures...................41
   SECTION 5.6        Money Held in Trust..........................................................41
   SECTION 5.8        Corporate Trustee Required; Eligibility......................................42
   SECTION 5.9        Resignation and Removal; Appointment of Successor............................42
   SECTION 5.10       Acceptance of Appointment by Successor.......................................44
   SECTION 5.11       Merger, Conversion, Consolidation or Succession to Business..................44
   SECTION 5.12       Authenticating Agents........................................................44
</TABLE>

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<TABLE>
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<S>                   <C>                                                                          <C>
   SECTION 5.13       Disqualification; Conflicting Interests......................................46
   SECTION 5.14       Preferential Collection of Claims against Company............................46

                                               ARTICLE SIX
                          CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

   SECTION 6.1        Company May Consolidate, Etc., Only on Certain Terms
   SECTION 6.2        Successor Substituted........................................................47

                                              ARTICLE SEVEN
                                         SUPPLEMENTAL INDENTURES

   SECTION 7.1        Supplemental Indentures without Consent of Holders of Securities.............47
   SECTION 7.2        Supplemental Indentures with Consent of Holders of Securities................48
   SECTION 7.3        Execution of Supplemental Indentures.........................................49
   SECTION 7.4        Effect of Supplemental Indentures............................................50
   SECTION 7.5        Reference in Securities to Supplemental Indentures...........................50
   SECTION 7.6        Notice of Supplemental Indentures............................................50

                                              ARTICLE EIGHT
                                                COVENANTS

   SECTION 8.1        Payment of Principal, Premium and Interest...................................50
   SECTION 8.2        Maintenance of Offices or Agencies...........................................51
   SECTION 8.3        Money for Security Payments to Be Held in Trust..............................51
   SECTION 8.4        Existence  52
   SECTION 8.5        Maintenance of Properties....................................................53
   SECTION 8.6        Payment of Taxes and Other Claims............................................53
   SECTION 8.7        Registration and Listing.....................................................53
   SECTION 8.8        Statement by Officers as to Default..........................................54
   SECTION 8.9        Delivery of Certain Information..............................................54
   SECTION 8.10       Resale of Certain Securities; Reporting Issuer...............................55
   SECTION 8.11       Waiver of Certain Covenants..................................................55
</TABLE>

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<TABLE>
<CAPTION>

                                              ARTICLE NINE
                                        REDEMPTION OF SECURITIES

<S>                   <C>                                                                          <C>
   SECTION 9.1        Right of Redemption..........................................................55
   SECTION 9.2        Applicability of Article.....................................................55
   SECTION 9.3        Election to Redeem; Notice to Trustee........................................55
   SECTION 9.4        Selection by Trustee of Securities to Be Redeemed............................56
   SECTION 9.5        Notice of Redemption.........................................................56
   SECTION 9.6        Deposit of Redemption Price..................................................57
   SECTION 9.7        Securities Payable on Redemption Date........................................57
   SECTION 9.8        Securities Redeemed in Part..................................................58
   SECTION 9.9        Conversion Arrangement on Call for Redemption................................58

                                               ARTICLE TEN
                                        CONVERSION OF SECURITIES

   SECTION 10.1       Conversion Privilege and Conversion Rate.....................................59
   SECTION 10.2       Exercise of Conversion Privilege.............................................59
   SECTION 10.3       Fractions of Shares..........................................................61
   SECTION 10.4       Adjustment of Conversion Rate................................................61
   SECTION 10.5       Notice of Adjustments of Conversion Rate.....................................66
   SECTION 10.6       Notice of Certain Corporate Action...........................................67
   SECTION 10.7       Company to Reserve Common Stock..............................................68
   SECTION 10.8       Taxes on Conversions.........................................................68
   SECTION 10.9       Covenant as to Common Stock..................................................68
   SECTION 10.10      Cancellation of Converted Securities.........................................68
   SECTION 10.11      Provision in Case of Consolidation, Merger or Sale of Assets.................69
   SECTION 10.12      Responsibility of Trustee for Conversion Provisions..........................70

                                             ARTICLE ELEVEN
                                       SUBORDINATION OF SECURITIES

   SECTION 11.1       Securities Subordinate to Senior Debt........................................70
   SECTION 11.2       No Payments in Certain Circumstances; Payment Over of Proceeds Upon
                              Dissolution, Etc.....................................................70
   SECTION 11.3       Trustee to Effectuate Subordination..........................................72
   SECTION 11.4       No Waiver of Subordination Provisions........................................73
   SECTION 11.5       Notice to Trustee............................................................73
   SECTION 11.6       Reliance on Judicial Order or Certificate of Liquidating Agent...............74
   SECTION 11.7       Trustee Not Fiduciary for Holders of Senior Debt.............................74
</TABLE>

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<TABLE>
<CAPTION>

<S>                   <C>                                                                          <C>
   SECTION 11.8       Reliance by Holders of Senior Debt on Subordination Provisions...............74
   SECTION 11.9       Rights of Trustee as Holder of Senior Debt; Preservation of Trustee's
                               Rights..............................................................75
   SECTION 11.10      Article Applicable to Paying Agents..........................................75
   SECTION 11.11      Certain Conversions and Repurchases Deemed Payment...........................75

                                             ARTICLE TWELVE
              REPURCHASE OF SECURITIES AT THE OPTION OF THE HOLDER UPON A CHANGE IN CONTROL

   SECTION 12.1       Right to Require Repurchase..................................................76
   SECTION 12.2       Conditions to the Company's Election to Pay the Repurchase Price in
                               Common Stock........................................................77
   SECTION 12.3       Notices; Method of Exercising Repurchase Right, Etc..........................77

                                            ARTICLE THIRTEEN
                     HOLDERS LISTS AND REPORTS BY TRUSTEE AND COMPANY; NON-RECOURSE

   SECTION 13.1       Company to Furnish Trustee Names and Addresses of Holders....................80
   SECTION 13.2       Preservation of Information..................................................81
   SECTION 13.3       No Recourse against Others...................................................81
   SECTION 13.4       Reports by Trustee...........................................................81
   SECTION 13.5       Reports by Company...........................................................82
</TABLE>

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                  Certain Sections of the Indenture relating to
                           Sections 310 through 318 of
                        the Trust Indenture Act of 1989:

                  --------------------------------------------------
                  TIA Indenture Section          Section
                  --------------------------------------------------
                  310(a)(1)                      5.8
                  --------------------------------------------------
                     (a)(2)                      5.8
                  --------------------------------------------------
                     (a)(3)                      N/A
                  --------------------------------------------------
                     (a)(4)                      N/A
                  --------------------------------------------------
                     (a)(5)                      5.8
                  --------------------------------------------------
                     (b)                         5.13
                  --------------------------------------------------
                     (c)                         N/A
                  --------------------------------------------------
                  311(a)                         5.14
                  --------------------------------------------------
                     (b)                         5.14
                  --------------------------------------------------
                     (c)                         N/A
                  --------------------------------------------------
                  312(a)                         13.1, 13.2
                  --------------------------------------------------
                     (b)                         13.2(b)
                  --------------------------------------------------
                     (c)                         13.2(c)
                  --------------------------------------------------
                  313(a)                         13.4
                  --------------------------------------------------
                     (b)(1)                      N/A
                  --------------------------------------------------
                     (b)(2)                      13.4
                  --------------------------------------------------
                     (c)                         13.4
                  --------------------------------------------------
                     (d)                         13.4
                  --------------------------------------------------
                  314(a)                         13.5
                  --------------------------------------------------
                     (b)                         N/A
                  --------------------------------------------------
                     (c)(1)                      1.2
                  --------------------------------------------------
                     (c)(2)                      1.2
                  --------------------------------------------------
                     (c)(3)                      N/A
                  --------------------------------------------------
                     (d)                         N/A
                  --------------------------------------------------
                     (e)                         1.2
                  --------------------------------------------------
                     (f)                         N/A
                  --------------------------------------------------
                  315(a)                         5.1(a)
                  --------------------------------------------------
                     (b)                         5.2
                  --------------------------------------------------
                     (c)                         5.1(b)
                  --------------------------------------------------
                     (d)                         5.1, 5.3
                  --------------------------------------------------
                     (e)                         4.14
                  --------------------------------------------------
                  316(a)(last sentence)          1.1, 5.1
                  --------------------------------------------------
                     (a)(1)(A)                   4.12
                  --------------------------------------------------
                     (a)(1)(B)                   4.13
                  --------------------------------------------------
                     (a)(2)                      N/A
                  --------------------------------------------------
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                  --------------------------------------------------
                  TIA Indenture Section          Section
                  --------------------------------------------------
                     (b)                         4.8
                  --------------------------------------------------
                     (c)                         1.4(e)
                  --------------------------------------------------
                  317(a)(1)                      4.3
                  --------------------------------------------------
                     (a)(2)                      4.4
                  --------------------------------------------------
                     (b)                         8.3
                  --------------------------------------------------
                  318(a)                         1.13
                  --------------------------------------------------
----------------------

N/A means Not Applicable
Note: This Cross-Reference Table shall not, for any purpose, be deemed as part
of the Indenture<PAGE>   1

                                                                    Exhibit 10.8

                            FIRST AMENDMENT TO LEASE

This First Amendment to Lease ("Amendment"), is made and entered into this 17
day of June, 1999 by and between Mission West Properties, L.P. II (formerly
known as Berg & Berg Developers), a Delaware limited partnership ("Lessor") and
Celeritek, Inc., a California Corporation ("Lessee").

                                    RECITALS

A.    Lessee currently leases from Lessor 54,672 square feet of space located at
      3236 Scott Boulevard, Santa Clara, California (the "Premises") pursuant to
      that certain lease dated April 1, 1993 (the "Lease").

B.    The term of the Lease expires September 30, 2000.

C.    Lessee has elected and Lessor has agreed to extend the subject to the
      terms and conditions set forth herein:

NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are acknowledged, the parties hereto agree to amend the
Lease as follows:

      1.    TERM: The term of the Lease is hereby extended for five years until
            September 30, 2005.

      2.    BASIC RENT: The basic rent shall be adjusted to and payable as
            follows:
<TABLE>
<CAPTION>
                                                           Basic Rent    CAC*         Total
                                                           ----------   -------     --------
<S>                                                        <C>          <C>         <C>
            October 1, 2000 through September 30, 2001      $ 76,541    $7,175*     $ 83,716
            October 1, 2001 through September 30, 2002      $ 82,008    $7,175*     $ 89,183
            October 1, 2002 through September 30, 2003      $ 97,590    $7,175*     $104,765
            October 1, 2003 through September 30, 2004      $101,493    $7,175*     $108,668
            October 1, 2004 through September 30, 2005      $105,553    $7,175*     $112,728
</TABLE>

            * Subject to annual adjustment.

      3.    BROKERAGE COMMISSION: Each party represents and warrants to the
            other party that it has not utilized or contacted a real estate
            broker or finder with respect to this Amendment and each party
            agrees to indemnify and hold each other harmless against any claim,
            cost, liability or cause of action asserted by any broker or finder
            claiming through either party. Lessor and Lessee agree that Lessor
            shall not be obligated to pay any broker leasing commissions,
            consulting fees, finders fees or any other fees or commissions
            arising out of the negotiation and execution of this Amendment or
            relating to any extended term of the Lease or to any expansion or
            relocation of the Premises.

      4.    LESSEE CERTIFICATION: As a condition of Lessor's agreeing to this
            Amendment, Lessee hereby certifies and confirms that as of the date
            of this Amendment, Lessee is not in violation of any government
            regulations, ordinances, rules or laws, including those pertaining
            to Hazardous Waste and/or Hazardous Materials.
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     5.   COMMON AREA CHARGES ("CAC"): Lessee shall pay to Lessor estimated
          taxes, insurance and gardening during the extended term (the current
          monthly estimated common area charge is $7,175).

     6.   RATIFICATION OF LEASE: Except as modified herein, the Lease is hereby
          ratified, approved and confirmed upon all the terms, covenants, and
          conditions.

     7.   AUTHORITY: Each party executing this Amendment represents and warrants
          that he or she is duly authorized to execute and deliver this
          Amendment. If executed on behalf of a corporation, that this Amendment
          is executed in accordance with the bylaws of said corporation (or a
          partnership that this Amendment is executed in accordance with the
          partnership agreement of such partnership), that no other party's
          approval or consent to such execution and delivery is required, and
          that this Amendment is binding upon said individual, corporation (or
          partnership) as the case may be in accordance with its terms.

MISSION WEST PROPERTIES, L.P., II               Celeritek, Inc.
a Delaware limited partnership                  a California corporation
By: Mission West Properties, Inc.
    A Maryland corporation

By: /s/ CARL E. BERG                            By: /s/ MICHAEL HOULIHAN
   ----------------------------                    -----------------------------
        Carl E. Berg

Title: President                                Title: VP & CFO
      -------------------------                       --------------------------

Date:    6/18/99                                Date:  6/17/99
     --------------------------                      ---------------------------

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