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International Rectifier (IR) was a semiconductor manufacturer specializing in power management technology. The company was founded in 1947 and was headquartered in El Segundo, California. IR designed, manufactured, and marketed a wide range of power semiconductor products including MOSFETs, IGBTs, diodes, thyristors, and integrated circuits. These products were used in various applications including automotive, industrial, computing, and consumer electronics. In 2015, IR was acquired by Infineon Technologies, a German semiconductor company, and its products and technologies were integrated into Infineon's portfolio.