PHOENIX, Ariz. – January 27, 2010 – ON Semiconductor (Nasdaq: ONNN) ON Semiconductor Corporation (Nasdaq: ONNN) today announced the successful completion of its tender offer for California Micro Devices Corporation (Nasdaq: CAMD), which expired January 26, 2010 at 12:00 midnight, New York City time. The 21,257,315 tendered shares represent approximately 90.5 percent of outstanding California Micro Devices Corporation shares. An additional 339,156 shares were tendered by notice of guaranteed delivery. ON Semiconductor has accepted for payment the shares validly tendered and not withdrawn. As a result of the valid tenders and acceptance of payment, ON Semiconductor will own more than 90 percent of outstanding California Micro Devices Corporation shares and expects to promptly complete the acquisition of California Micro Devices Corporation in accordance with applicable provisions of Delaware law that authorize the completion of the merger as a “short form” merger without a vote or meeting of the stockholders of California Micro Devices Corporation.