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International Rectifier

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International Rectifier Corporation an Infineon Technologies Company
Company typePublic
Integrated Circuits
Founded1947; 77 years ago (1947)
FateAcquired by Infineon Technologies
Headquarters El Segundo, California
Key people
Eric Lidow, Founder
Robert LeFort, President
RevenueUS$1.1 billion (June 2014)[1]
Number of employees
4,200 (13th January 2015)[1]
ParentInfineon Technologies

International Rectifier was an American power management technology company manufacturing analog and mixed-signal ICs, advanced circuit devices, integrated power systems, and high-performance integrated components for computing. On 13 January 2015, the company became a part of Infineon Technologies.[1]

IR's products, as a part of Infineon Technologies' overall semiconductor portfolio, continue to be used in many applications including lighting, automobile, satellite, aircraft, and defense systems; as well as key components in power supply systems in electronics-based products that include especially microcomputers, servers, networking and telecommunications equipment.


  • 1954: commercialization of germanium rectifiers
  • 1959: creation of the first silicon-based rectifier
  • 1974: first power and Darlington transistors which used glass passivation
  • 1979: first hexagonal power MOSFET
  • 1983: first intelligent power ICs
  • 1983: lost a patent infringement lawsuit over the rights to doxycycline to Pfizer, Inc., resulting in a judgment of $55 million to Pfizer. To avoid bankruptcy, International Rectifier gave Pfizer its animal health and feed additive businesses.[2][3]
  • 2000: developed FlipFET wafer packaging
  • 2002: developed DirectFET, a MOSFET packaging technology developed to address thermal limitations found in advanced computing, consumer and communications applications
  • 2003: developed iMOTION Integrated Design Platform for motor control applications
  • 2006: introduced SmartRectifier IC for AC/DC applications
  • 2007: launched SupIRBuck integrated voltage regulators
  • 2008: introduced revolutionary GaN-based power device platform
  • 2011: introduced PowIRstage devices and CHiL digital controllers
  • 2012: launched micro integrated power modules for motor control applications and COOLiRIGBTs for automotive.
  • 2014: bought by Infineon Technologies for $3 billion.[4]
  • 2015: officially becomes a part of Infineon Technologies


International Rectifier also had wafer fabrication and assembly facilities around the world. The locations include:


  1. ^ a b c "Infineon Technologies AG successfully acquires International Rectifier".
  2. ^ "RECTIFER RE-EMPHASIZES ELECTRONICS." New York Times, Late Edition (East Coast) ed.Aug 02 1983. ProQuest. Web. 14 Nov. 2015.
  3. ^ Amernick, Burton Patent Law for the Nonlawyer. Springer Science and Business Media, 2012. page 2.
  4. ^ Merced, Michael J. de la (August 20, 2014). "Infineon to Buy International Rectifier, a Chip Maker, for $3 Billion". DealBook. Retrieved February 24, 2023.

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