International Rectifier was a major semiconductor company that specialized in the design and manufacture of power management and power conversion technologies. Founded in 1947 and headquartered in El Segundo, California, International Rectifier (IR) was renowned for its expertise in producing a wide range of semiconductor products, including power MOSFETs, IGBTs, and integrated circuits. In 2015, International Rectifier was acquired by Infineon Technologies, a leading global semiconductor provider. As a result, IR’s product lines and technology have been integrated into Infineon's broader portfolio.