EXHIBIT 23


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Board of Directors
American Technical Ceramics Corp.:


We consent to the incorporation by reference in the Registration Statements on
Form S-8 (No. 333-50913 and No. 333-76582) of American Technical Ceramics Corp.,
of our report, dated September 9, 2004, relating to the consolidated balance
sheets of American Technical Ceramics Corp. and subsidiaries as of June 30, 2004
and 2003, and the related consolidated statements of operations, stockholders'
equity and comprehensive income (loss) and cash flows, for each of the years in
the three-year period ended June 30, 2004, which report appears in the 2004
Annual Report on Form 10-K of American Technical Ceramics Corp.




Melville, New York
September 24, 2004

                                  /S/ KPMG LLP