EL SEGUNDO, Calif. — October 3, 2005 — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, announced today that it has won the Environmental Award, one of the Elektra 05 European Electronics Industry Awards. The annual awards are organized by Electronics Weekly, part of publishing powerhouse Reed Electronics Group, in recognition of achievement and innovation in the electronics industry. The awards celebrate companies and people that are achieving the highest standards in driving the industry forward.

Speaking on behalf of the independent panel of judges, Electronics Weekly Editor Richard Wilson said, “International Rectifier has set an example of environmental awareness in all its business activities which establishes a great blueprint for other manufacturers to follow.” The judges were looking for firms that have made a significant effort to reduce the environmental impact of their products, manufacturing processes and business practices. Consideration was given to companies throughout the world that have taken a proactive stance towards compliance with European legislation on the disposal of waste materials and restrictions on the use of hazardous substances.

International Rectifier’s CEO Alex Lidow said, “We’re honored to accept this award and will strive to continue to develop products and processes that promote environmental stewardship.”

This year’s winners were announced at an industry gala held September 27 at London’s Grosvenor Hotel. For more information, go to the “EW Awards” link at www.electronicsweekly.com.

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog, digital and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and eliminate energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next-generation products. For more information, go to www.irf.com.