U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

Form 10-K/A

Amendment No. 3

For the fiscal year ended: March 31, 2002

OR

For the transition period from                      to                     

Commission File Number: 0-15449

CALIFORNIA MICRO DEVICES CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (408) 263-3214

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

Securities registered pursuant to Section 12(g) of the Act: Common Stock

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 files pursuant to Item 405 of Regulation S-K (Section 209.405 of this chapter) is not contained herein, and will not be contained to the best of registrant’s knowledge, in any definitive proxy or information statement incorporated by reference in Part II of this Form 10-K or any amendment to this Form 10-K. Yes x No ¨

The aggregate market value of the voting stock held by non-affiliates of the Registrant as of May 31, 2002, was approximately $50.4 million based upon the last sale price of the common stock reported for such date on the Nasdaq National Market System. For purposes of this disclosure, common stock held by persons who hold more than 5% of the outstanding voting shares and common stock held by executive officers and directors of the Registrant have been excluded in that such persons may be deemed to be “affiliates” as that term is defined under the rules and regulations promulgated under the Securities Act of 1933. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of May 31, 2002, the number of shares of the Registrant’s common stock outstanding were 13,905,590.

DOCUMENTS INCORPORATED BY REFERENCE

The Proxy Statement for the Registrant’s Annual Meeting of Shareholders to be held August 7, 2002.

EXPLANATORY NOTE

Registrant hereby amends Item 14 of Part IV to replace Exhibit 23.1, Consent of Ernst & Young, LLP, Independent Registered Public Accounting Firm with the attached Exhibit 23.1 which corrects the list of registration statements into which such firm consents that its report included in the Form 10-K be incorporated by reference by adding certain Form S-3 registration statements to such list.

Part IV

The following documents are filed as a part of this Report:

(a) 1. See Item 8 for a list of financial statements filed herein.

The exhibits listed below are filed herewith or incorporated by reference as indicated pursuant to Regulation S-K. The exhibit number refers to number indicated pursuant to the Instructions to the Exhibit Table for Regulation S-K.

(b) 1. Reports on Form 8-K:

On January 7, 2002, we filed a Form 8-K under Item 5, reporting the affirmation of our December 2002 quarter guidance.

On January 23, 2002, we filed a Form 8-K under Item 5, reporting the selection of a new Vice President Finance and Administration and Chief Financial Officer.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s Proxy Statement in connection with its August 7, 2002 Annual Meeting of Shareholders (which will be filed with the Securities and Exchange Commission within 120 days of the end of the fiscal year ended March 31, 2002) are incorporated by reference into Part III.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Amendment No. 3 to Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized on the 2nd day of September, 2004.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities indicated on the 2nd day of September, 2004.