onsemi does not build headline AI processors; it builds the chips that convert and control electricity and the sensors that let machines see. Its products sit in EV inverters and onboard chargers, solar and storage inverters, factory automation, car cameras and, increasingly, the power supplies of AI servers. The company is headquartered in Scottsdale, Arizona. ON Semiconductor (onsemi) was spun off from Motorola's Semiconductor Products Sector in 1999 in Phoenix, Arizona, transforming over two decades into an intelligent power and sensing semiconductor powerhouse headquartered in Scottsdale.
onsemi makes money by selling semiconductors to automakers, tier-1 suppliers, industrial equipment makers and data center power-supply builders, largely through distributors and direct design wins. Revenue is reported in three groups: the Power Solutions Group (silicon and silicon carbide power devices and modules), the Analog and Mixed-Signal Group (power management, sensor interface and connectivity ICs) and the Intelligent Sensing Group (image sensors). The company runs its own fabs, including vertically integrated SiC production from crystal growth to modules after buying GT Advanced Technologies in 2021, so margins swing with factory utilization. Automotive design wins typically last for years, which gives visibility but also exposes onsemi to EV demand cycles.