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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ______________________

                                   FORM 10-K/A

            FOR ANNUAL AND TRANSITION REPORT PURSUANT TO SECTIONS 13
                 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

(MARK ONE)

[X]     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
        EXCHANGE ACT OF 1934

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999

                                       OR

[ ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
        EXCHANGE ACT OF 1934

           FOR THE TRANSITION PERIOD FROM ___________ TO ____________.

                         COMMISSION FILE NUMBER 1-10560

                           BENCHMARK ELECTRONICS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

                             ______________________

                TEXAS                             74-2211011
   (STATE OR OTHER JURISDICTION OF             (I.R.S. EMPLOYER
   INCORPORATION OR ORGANIZATION)           IDENTIFICATION NUMBER)

             3000 TECHNOLOGY DRIVE
                 ANGLETON, TEXAS                            77515
     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)            (ZIP CODE)


               REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                 (979) 849-6550

           SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:

                                                 NAME OF EACH EXCHANGE
         TITLE OF EACH CLASS                      ON WHICH REGISTERED
- ---------------------------------------      ----------------------------
Common Stock, par value $0.10 per share      New York Stock Exchange, Inc.
Preferred Stock Purchase Rights              New York Stock Exchange, Inc.

           SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                             ______________________

     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 [ ].

     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K 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.  [ ]

     As of March 28, 1999, the number of outstanding shares of Common Stock was
16,272,226. As of such date, the aggregate market value of the shares of Common
Stock held by non-affiliates, based on the closing price of the Common Stock on
the New York Stock Exchange on such date, was approximately $570.5 million.

                      DOCUMENTS INCORPORATED BY REFERENCE:

(1) The Company's Annual Report on Form 10-K for the fiscal year ended
    December 31, 1999.

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                               TABLE OF CONTENTS

Item 14.   Exhibits, Financial Statement Schedules, and Reports
             on Form 8-K.

           (a)(2) Financial Statement Schedule
                  Independant Auditors' Report........................  2
                  Schedule II - Valuation Accounts....................  3


           The Registrant is amending its Form 10-K for 1999 to include Schedule
           II, Valuation Accounts, and the accompanying independent auditors'
           report.

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                                   SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                          BENCHMARK ELECTRONICS, INC.

                                          By: /s/ GAYLA J. DELLY
                                                  GAYLA J. DELLY
                                                    TREASURER

     Dated: July 13, 2000
                                        1

                          INDEPENDENT AUDITORS' REPORT


The Board of Directors and Shareholders
Benchmark Electronics, Inc.:

Under date of February 8, 2000, we reported on the consolidated balance sheets
of Benchmark Electronics, Inc. and subsidiaries as of December 31, 1999 and
1998, and the related consolidated statements of income, shareholders' equity
and comprehensive income, and cash flows for each of the years in the three-year
period ended December 31, 1999, as incorporated by reference in the annual
report on form 10-K for the year 1999. In connection with the audits of the
aforementioned consolidated financial statements, we also audited the related
consolidated financial statement schedule as listed in the accompanying index.
This financial statement schedule is the responsibility of the Company's
management. Our respnsibility is to express an opinion on this financial
statement schedule based on our audits.

In our opinion, such financial statement schedule, when considered in relation
to the basic consolidated financial statements taken as a whole, presents
fairly, in all material respects, the information set forth therein.



KPMG LLP

Houston, Texas
February 8, 2000

                                       2

                           BENCHMARK ELECTRONICS, INC.

                        SCHEDULE II - VALUATION ACCOUNTS
                                 (IN THOUSANDS)



                                                                   ADDITIONS
                                                    --------------------------------------
                                      BALANCE AT                                              BALANCE AT
                                       BEGINNING    CHARGES TO       OTHER                      END OF
                                       OF PERIOD    OPERATIONS     ADDITIONS    DEDUCTIONS      PERIOD
                                      ----------    ----------     ---------    ----------    ----------
                                                                                 
Year ended December 31, 1999
  Allowance for doubtful accounts(1)(2) $  100           273         7,332          --           7,705
                                        ======        ======        ======        ======        ======
  Inventory obsolescence reserve(2)(3)  $3,510         1,911        14,579          --          20,000
                                        ======        ======        ======        ======        ======
Year ended December 31, 1998
  Allowance for doubtful accounts(1)    $  156          --            --              56           100
                                        ======        ======        ======        ======        ======
  Inventory obsolescence reserve(3)(4)  $1,751           583         3,100         1,924         3,510
                                        ======        ======        ======        ======        ======

Year ended December 31, 1997
  Allowance for doubtful accounts(1)    $  782            18          --             644           156
                                        ======        ======        ======        ======        ======
  Inventory obsolescence reserve(3).    $2,131           300          --             680         1,751
                                        ======        ======        ======        ======        ======

- ------
(1) Deductions in the allowance for doubtful accounts represent write-offs, net
    of recoveries, of amounts determined to be uncollectible.

(2) Other addition relates to the acquisition of AVEX.

(3) Deductions in the inventory obsolescence reserve represent disposals of
    inventory determined to be obsolete.

(4) Other addition relates to the acquistion of LCEC.

See accompanying independent auditors' report.

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