When the power is on, ON Semiconductor semiconductors help its customers use less of it. The company designs and manufactures energy efficient, low-cost, high-volume analog, logic, and discrete semiconductors, with more than 50,000 devices in its catalog. These components perform vital power and signal control and interface functions in nearly every sort of electronic gear, from networking routers and wireless phones and digital cameras to household appliances and automotive braking systems. It sells directly to OEMs including  Cisco,  GE,  Honeywell,  Samsung, and  Siemens, and to distributors such as  Avnet and  Arrow Electronics. Two-thirds of ON Semiconductor's sales come from the Asia/Pacific region.