On November 5, 2009, International Rectifier Corporation (the "Company") issued a press release announcing its financial results for the first fiscal quarter of fiscal year 2010. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference.

The information in this Item 2.02 of this Report on Form 8-K, including Exhibit 99.1, will not be treated as "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section. This information will not be incorporated by reference into a filing under the Securities Act of 1933, or into another filing under the Exchange Act, unless that filing expressly refers to specific information in this report.

The Company plans to present an updated investor presentation at its 2009 Annual Meeting to be held at The Belamar Hotel, located at 3501 Sepulveda Boulevard in Manhattan Beach, California next Monday, November 9, at 9:00 a.m. A copy of the presentation will be posted and available for viewing at the Company's investor relations website at http://investor.irf.com that morning prior to the annual meeting.

The information in this Item 7.01 of this Report on Form 8-K, will not be treated as "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section. This information will not be incorporated by reference into a filing under the Securities Act of 1933, or into another filing under the Exchange Act, unless that filing expressly refers to specific information in this report.

(d) Exhibits

Exhibit Number                                Description
99.1             Press release of International Rectifier Corporation, dated
                 November 5, 2009, reporting financial results for the first quarter
                 of fiscal year 2010.