EX-32.1 13 a2194356zex-32_1.htm EX-32.1
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EXHIBIT 32.1


CERTIFICATION
PURSUANT TO
18 U.S.C. SECTION 1350
As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

        The undersigned, Oleg Khaykin, the Chief Executive Officer of International Rectifier Corporation (the "Company"), pursuant to 18 U.S.C. §1350, hereby certifies that:

    (i)
    the Annual Report on Form 10-K of the Company for the fiscal year ended June 28, 2009 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

    (ii)
    the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of, and for, the periods presented in the Report.

Date: August 27, 2009

        /s/ OLEG KHAYKIN

Oleg Khaykin
Chief Executive Officer
(Principal Executive Officer)



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CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002