Promotion INFINEON,INFINEON chip,INFINEON Electronics Components,This article is about the German corporation. For the racing circuit once named after Infineon, see Sonoma Raceway. Industry Semiconductor,Products:Microcontrollers,Telecommunications,Integrated circuits,Power electronics,Transient-voltage-suppression diodes,Divisions,Automotive,Industrial Power Control,Power & Sensor Systems,Connected Secure Systems,Infineon Technologies AG is Germany’s largest semiconductor manufacturer.Before the spin-off the semiconductor operations were part of the former parent company Siemens AG.