International Rectifier to Announce Results for Fourth Quarter Fiscal 2011 on August 17, 2011

August 3, 2011

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EL SEGUNDO, Calif.--(BUSINESS WIRE)-- International Rectifier Corporation (NYSE:IRF) will release its fiscal year 2011 full year and fourth quarter results on Wednesday, August 17, at approximately 1:00 p.m. Pacific time, followed by a conference call at 2:00 p.m. Pacific time. CEO Oleg Khaykin and CFO Ilan Daskal will discuss the company’s 2011 fiscal year, June quarter results and September quarter outlook. All participants, both in the U.S. and international, may join the call by dialing 706-679-3195 by 1:55 p.m. Pacific time. In order to join this conference call, participants will be required to provide the Conference Passcode: “International Rectifier”. Participants may also 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 6:00 p.m. Pacific time on Wednesday, August 17 through Wednesday, August 24, 2011. To listen to the replay by phone, call 855-859-2056 or 404-537-3406 for international callers and enter reservation number 88785239. 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.

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.