EL SEGUNDO, CA. October 2000 - International Rectifier Corporation (NYSE:IRF - news) today announced that it is expanding its proprietary business with the acquisitions of Lambda Advanced Analog Inc. and Magnitude-3, suppliers of high-value-added power management systems and technology for aerospace, aviation and other high-reliability applications.

IR has entered into an agreement to purchase Advanced Analog and recently completed the acquisition of Magnitude-3. International Rectifier expects to pay approximately $24 million for the two companies, which have annualized revenues of about $28 million. The acquisitions are expected to be accretive within the first 12 months.

Advanced Analog and Magnitude-3 supply benchmark power management systems to global leaders in satellites, launch vehicles, and commercial and military aircraft.

International Rectifier chief executive officer Alex Lidow commented, ``These acquisitions reflect our strategic emphasis on proprietary business. Their technology, products, and customers provide an excellent fit and strengthen our leadership position in power management for aerospace and other lucrative high-reliability applications.''

John Catrambone, vice president of IR's High-Rel Components and Subsystems business unit, noted, ``We are confident that our combined operations will offer a compelling combination of products and services to industry leaders seeking power management solutions for the world's most demanding applications. Our joint management team is enthusiastic about our role in a group that is defining power architectures and setting industry standards.''

The acquisition of Advanced Analog is subject to regulatory review and other closing conditions. International Rectifier is a world leader in power management devices and systems that enable information technology and other end products to improve functionality, speed, compactness and portability. IR's analog power ICs, advanced-circuit devices, power systems, and components enable Internet hardware to gain speed and reliability, allow portable electronics to run longer off a single charge, improve automotive fuel efficiency, and cut energy consumption in home appliances and industrial motors.

International Rectifier is the pioneer and market leader in the $4 billion power MOSFET industry, and more than 20 companies are licensed under its power MOSFET patents. IR serves market leaders around the world, and more than half its revenue comes from outside the United States.

The foregoing material includes some forward-looking statements made pursuant to safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The company cautions that such statements are subject to a number of uncertainties, and actual results may differ materially. Factors that could affect the Company's actual results include the effectiveness of cost controls, cost reductions and the integration of the new businesses into the company's operations; the accuracy of customers' forecasts; push-out of delivery dates; product returns; introduction, acceptance, availability of new products; and timely completing customer qualifications; pricing pressures; product returns; failure of suppliers to meet delivery commitments; unfavorable changes in industry and competitive conditions; unanticipated impacts on our business or financial condition due to changes in currency valuation; the impact of trade and export regulations and policies; and other uncertainties disclosed in the Company's S-3 filing with the Securities and Exchange Commission on Oct. 16, 2000.

- Shelley Wagers
Vice President, Communications
Tel: 310.726.8512
E-Mail: vkuyken1@irf.com