All ON Semiconductor Fab Sites Achieve Environmental Standard; Company's Manufacturing Sites Certified ISO14001.

Business Editors/High-Tech Writers

PHOENIX--(BUSINESS WIRE)--March 11, 2003

ON Semiconductor (Nasdaq: ONNN) today announced that all eight of its internal manufacturing sites have successfully met the requirements for the ISO14001 standard -- a certification that outlines the framework for the environmental risk management needs and goals of an organization.

This certification provides ON Semiconductor with a competitive advantage as it uses its flexible manufacturing network to meet the needs of customers around the world.

The automotive industry adopted ISO 14001 and requires its suppliers to meet these standards as part of its commitment to manage and mitigate potential environmental hazards involved with various manufacturing processes.

ON Semiconductor's facilities in Leshan, China; Aizu, Japan; Seremban, Malaysia; Carmona, Philippines; Roznov, Czech Republic; Piestany, Slovakia; East Greenwich, R.I.; and Phoenix have successfully attained the ISO 14001 standard.

ISO 14001 provides a formal structure for environmental management. The requirements of ISO 14001 cover the main principles of professional management and are based on the cyclical process of plan, implement, check and review. The standard outlines 21 specific requirements for areas of management control, grouped under policy, planning, implementation and operation, checking and corrective action and management review. The intent of ISO 14001 is to support environmental protection and prevention of pollution.

"We have pursued the adaptation of these standards to meet the needs of our customers worldwide," said Bill George, ON Semiconductor senior vice president of operations. "Adhering to these standards is simply the right thing to do. Many of our sites have performed to the ISO14001 standard for at least two years. All of our sites now conform to this standard and have earned third-party certification."

About ON Semiconductor

ON Semiconductor offers an extensive portfolio of power- and data-management semiconductors and standard semiconductor components that address the design needs of today's sophisticated electronic products, appliances and automobiles. For more information, visit ON Semiconductor's Web site 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.