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

                                  FORM 10-K/A

                                Amendment No. 1

[X] ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934
    For the fiscal year ended December 31, 2003.

[ ] 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 0-25236

                    M I C R E L,   I N C O R P O R A T E D
            (Exact name of Registrant as specified in its charter)

              California                                   94-2526744
(State or other jurisdiction                            (I.R.S. Employer
of incorporation or Organization)                       Identification No.)


                 2180 Fortune Drive, San Jose, CA       95131
              (Address of principal executive offices) (Zip Code)

   Registrant's telephone number, including area code: (408) 944-0800

Securities registered pursuant to Section 12(b) of the Act:   None

Securities registered pursuant to Section 12(g) of the Act:   Common Stock, no
par value

   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. [ ]

   Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act. Yes [X] No [ ]

   As of March 1, 2004, the aggregate market value of the voting stock held by
non-affiliates of the Registrant was approximately $1,256,517,723 based upon
the closing sales price of the Common Stock as reported on the Nasdaq National
Market on such date. Shares of Common Stock held by officers, directors and
holders of more than ten percent of the outstanding Common Stock have been
excluded from this calculation because such persons may be deemed to be
affiliates. The determination of affiliate status is not necessarily a
conclusive determination for other purposes.

   As of March 1, 2004, the Registrant had outstanding 92,570,951 shares of
Common Stock.


                      DOCUMENTS INCORPORATED BY REFERENCE:

   Portions of the Registrant's Proxy Statement for its Annual Meeting of
Shareholders to be held on May 27, 2004 are incorporated by reference in Part
III of this Report.




                                EXPLANATORY NOTE

   This amendment to Micrel, Incorporated's Annual Report on Form 10-K for the
fiscal year ended December 31, 2003, is being filed to amend Item 9A. Controls
and Procedures, to conform the wording more closely to that required by Items
307 and 308(c) of Regulation S-K. No revisions have been made to the Micrel
Incorporated financial statements or any other disclosures contained in the
Annual Report.


ITEM 9A.  CONTROLS AND PROCEDURES

   The Company maintains disclosure controls and procedures that are designed
to ensure that information required to be disclosed in the Company's reports
under the Securities Exchange Act of 1934 is recorded, processed, summarized
and reported within the time periods specified in the rules and forms of the
Securities and Exchange Commission, and that such information is accumulated
and communicated to the Company's management, including its chief executive
officer and chief financial officer, as appropriate, to allow timely decisions
regarding required disclosure. In designing and evaluating the disclosure
controls and procedures, management recognizes that any controls and
procedures, no matter how well designed and operated, can provide only
reasonable assurance of achieving the desired control objectives, and
management necessarily is required to apply its judgment in evaluating the
cost-benefit relationship of possible controls and procedures.

   As required by Securities and Exchange Commission Rule 13a-15(b), the
Company carried out an evaluation, under the supervision and with the
participation of the Company's management, including the Company's chief
executive officer and chief financial officer, of the effectiveness of the
design and operation of the Company's disclosure controls and procedures as of
the end of the period covered by this report. Based on the foregoing, the
Company's chief executive officer and chief financial officer concluded
that the Company's disclosure controls and procedures were effective at the
reasonable assurance level.

   There has been no change in the Company's internal controls over financial
reporting during the quarter ended December 31, 2003 that has materially
affected, or is reasonably likely to materially affect, the Company's internal
control over financial reporting.


                                   SIGNATURES

   Pursuant to the requirements of Section 13 or 15(d) of the Securities and
Exchange Act of 1934, the registrant has duly caused this Report to be signed
on its behalf by the undersigned, thereunto duly authorized, in San Jose,
California on the 23rd day of February, 2005.

                                      MICREL, INCORPORATED

                              By       /S/ Raymond D. Zinn
                                     -------------------------
                                           Raymond D. Zinn
                                 President and Chief Executive Officer