EL SEGUNDO, Calif.--(BUSINESS WIRE)--Aug. 31, 2004--International Rectifier, IR(R) (NYSE:IRF), a world leader in power management technology, will be named to Deloitte's prestigious Fast 50 Program for Los Angeles, a ranking of the 50 fastest growing technology companies in the area by Deloitte & Touche LLP, one of the nation's leading professional services firms.

"To make the Deloitte Technology Fast 50, companies within Los Angeles must have had tremendous revenue growth from 1999-2003. Deloitte applauds International Rectifier for having the long-term vision to develop technologies that change the way we work and play," said Tim Lovoy, Technology, Media, and Telecommunications partner at Deloitte Touche LLP.

Technology Fast 50 rankings, scheduled to be announced on September 21, are based on the percentage of growth in fiscal year revenues over five years, from 1999 - 2003. Winners of the 19 regional Technology Fast 50 programs in the United States and Canada are automatically entered in the Deloitte Technology Fast 500 Program, a ranking of the fastest growing technology companies in North America. For more information on Deloitte's regional or national program, visit www.fast.500.com.

Trademark Notice

IR(r) is a registered trademark of International Rectifier Corporation.

About International Rectifier

International Rectifier, a world leader in power management technology, employs about 5800 people with operations in 20 countries throughout North America, Europe, Japan and Asia. The company's headquarters are located in El Segundo, California. Its mixed-signal analog IC's, advanced circuit devices, integrated power systems, and components are relied upon by the world's leading makers of next generation laptops, desktops, energy-efficient appliances, automobiles, lighting, aircraft, satellites, and advanced defense systems. International Rectifier's stock is listed on the New York Stock Exchange under the ticker symbol IRF. The company's website is located at www.irf.com.

For more information, contact Graham Robertson at (310)726-8512 or grobert1@irf.com.

About Deloitte

Deloitte, one of the nation's leading professional services firms, provides audit, tax, financial advisory services and consulting through nearly 30,000 people in more than 80 U.S. cities. Known as an employer of choice for innovative human resources programs, the firm is dedicated to helping its clients and its people excel. "Deloitte" refers to the associated partnerships of Deloitte & Touche USA LLP (Deloitte & Touche LLP and Deloitte Consulting LLP) and subsidiaries. Deloitte is the US member firm of Deloitte Touche Tohmatsu. For more information, please visit Deloitte's web site at www.deloitte.com/us.

Deloitte Touche Tohmatsu is an organization of member firms devoted to excellence in providing professional services and advice. We are focused on client service through a global strategy executed locally in nearly 150 countries. With access to the deep intellectual capital of 120,000 people worldwide, our member firms, including their affiliates, deliver services in four professional areas: audit, tax, financial advisory services and consulting. Our member firms serve more than one-half of the world's largest companies, as well as large national enterprises, public institutions, locally important clients, and successful, fast-growing global growth companies.

Deloitte Touche Tohmatsu is a Swiss Verein (association), and, as such, neither Deloitte Touche Tohmatsu nor any of its member firms has any liability for each other's acts or omissions. Each of the member firms is a separate and independent legal entity operating under the names "Deloitte", "Deloitte & Touche", "Deloitte Touche Tohmatsu" or other related names. The services described herein are provided by the member firms and not by the Deloitte Touche Tohmatsu Verein. For regulatory and other reasons certain member firms do not provide services in all four professional areas listed above.

CONTACT: International Rectifier
Graham Robertson, (310) 726-8512
grobert1@irf.com

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding International Rectifier's business which are not historical facts are "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Company's Annual Report or Form 10-K for the most recently ended fiscal year.