SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) July 31, 2003

INTERNATIONAL RECTIFIER CORPORATION

(Exact name of registrant as specified in charter)

Delaware	1-7935	95-1528961
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
233 KANSAS STREET, EL SEGUNDO, CALIFORNIA 90245
(Address of principal executive offices)
(310) 726-8000
(Registrant’s telephone number, including area code)
No Change
(Former name or former address, if changed since last report)

Item 9. Regulation FD Disclosure

       This information is being provided under new Item 12 of Form 8-K, “Results of Operations and Financial Condition,” pursuant to interim guidance provided by the Securities and Exchange Commission.

       On July 31, 2003, International Rectifier Corporation issued a press release setting forth its results for its fiscal quarter ending June 30, 2003. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Exhibit Index

       99.1    Press Release, dated July 31, 2003, issued by International Rectifier Corporation.

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SIGNATURES

       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.

	INTERNATIONAL RECTIFIER CORPORATION
Date: July 31, 2003	By:	/s/   DONALD R. DANCER
		Name:	Donald R. Dancer
		Title:	Secretary and General Counsel

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