International Rectifier to Host Conference Call on August 4, 2008 to Discuss Restatement Results

Business Wire, August 1, 2008

EL SEGUNDO, Calif. -- International Rectifier Corporation (NYSE:IRF) today announced the filing of its financial restatement for certain prior periods. The Company expects to file with the Securities and Exchange Commission (SEC) its 2007 annual report on Form 10-K and quarterly reports on Form 10-Q for the quarters ending March 31, 2007, September 30, 2007, December 31, 2007 and March 31, 2008 after 1:30 p.m. Pacific time, today. These financial reports will be available for viewing and download after filing along with an investor presentation and a letter to shareholders at http://investor.irf.com.

The Company also plans to also host a conference call on August 4, 2008, at 5:00 a.m. Pacific time/ 8:00 a.m. Eastern Time to discuss the contents of the restatement and related filings. Participants may join the call by dialing 1 212-896-6121 by 4:55 a.m. Pacific time, or may listen over the Internet at http://investor.irf.com. To listen to the live call, please go to the web site at least 15 minutes early to register, download, and install any necessary audio software.

A taped replay of this call will be available from approximately 9:00 a.m. Pacific time on Monday, August 4, through 9:00 a.m. Pacific time on Monday, August 11, 2008. To listen to the replay by phone, call 800-633-8284 and enter reservation number 21390143. International callers may dial 1 402-977-9140 and use the same reservation number. To listen to the replay over the Internet, please go to http://investor.irf.com. The live call and replay will also be available on www.streetevents.com and www.vcall.com.

About International Rectifier

International Rectifier Corporation (NYSE:IRF) is a world leader in power management technology. IR's analog, digital, and mixed signal ICs, and other advanced power management products, enable high performance computing and save energy in a wide variety of business and consumer applications. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft, and defense systems rely on IR's power management solutions to power their next generation products. For more information, go to www.irf.com.

Cautionary Information Regarding Forward-looking Statements

This press release includes some "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements are subject to a number of uncertainties and risks, and actual results may differ materially from those projected. Factors that could affect the Company's actual results include unanticipated consequences of the Company's investigation and the restatement of the Company's financial statements as well as the effects of other various risk factors and uncertainties disclosed in the Company's reports filed with the SEC, including its most recent reports on Forms 8-K, 10-K, and 10-Q. Such forward-looking statements speak only as of the date on which they are made, and the Company does not undertake any obligation to update any forward-looking statement to reflect events or circumstances after the date hereof.