ON Semiconductor Expands Manufacturing Facility in the Philippines.

Carmona-Based Plant to Significantly Increase Production Volume by 2010

CARMONA, Philippines -- ON Semiconductor (Nasdaq: ONNN), a global supplier of efficient power management solutions, has announced the expansion of its production facility in the Philippines. Construction of an additional

"Our factory in the Philippines strategically contributes to ON Semiconductor by producing power management devices for computing, portable and consumer applications that are at the core of the company's market strategy," said Keith Jackson, ON Semiconductor president and CEO - who presided over the groundbreaking ceremony today in Carmona.

The company's Philippine factory has consistently increased its production volume over the last five years and taken on responsibility for a variety of global and regional functions for the corporation.

"The workforce in and around Carmona provides the technically educated and highly skilled engineers and workers ON Semiconductor needs to ensure the successful operation of expanded factory and business operations in the Philippines," said Richard Cohen, ON Semiconductor Philippines president and general manager. "ON Semiconductor extends its appreciation to the Philippine government for the timely approval of the Philippine Economic Zone Authority, the proclamation of President Gloria Arroyo of the land area where the factory is located as a special economic zone, and the assistance provided by PEZA Director General Lilia de Lima."

About ON Semiconductor

With its global logistics network and strong portfolio of power semiconductor devices, ON Semiconductor (Nasdaq: ONNN) is a preferred supplier of power solutions to engineers, purchasing professionals, distributors and contract manufacturers in the power supply, computer, consumer, portable/wireless, automotive and industrial markets. For more information, please visit ON Semiconductor's website at http://www.onsemi.com.

ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its Web site in this news release, such information on the Web site is not to be incorporated herein.