ON Semiconductor and Mouser Electronics Sign Global Distribution Agreement

Business Wire, June 1, 2006

PHOENIX -- ON Semiconductor (Nasdaq: ONNN), a premiere worldwide supplier of performance power solutions, today announced it has signed a global distribution agreement with Mouser Electronics Inc., the fastest-growing catalog distributor in the industry.

"We chose to partner with Mouser because of their unique competence at marketing new products and their ability to quickly get those products into the hands of design engineers," said Jeff Thomson, ON Semiconductor vice president of Worldwide Channel Sales. "As ON Semiconductor increases the pace at which it rolls out new products and solutions, improving early access to these devices will be vitally important. Mouser is focused on stocking the newest products, with no minimum order and same-day shipping -- which is exactly what ON Semiconductor needs to get its latest components in the hands of more design engineers."

ON Semiconductor's strong portfolio of power components and solutions include analog power conversion devices, rectifiers, diodes, MOSFETs and more. The company's devices solve power management and power distribution challenges in computing, consumer, portable, automotive and communications systems.

"ON Semiconductor has a superb product selection and a great reputation for service and support, and Mouser has a huge design engineering customer base that is growing by hundreds of new accounts every day," said Mouser President and CEO Glenn Smith. "We can offer ON Semiconductor access to the many customers uniquely reached by Mouser. We will release ON Semiconductor's new products quickly on our Web site, then every 90 days in our quarterly Mouser catalog. We also provide numerous additional marketing and technical vehicles that will help engineers create designs using ON Semiconductor products, thus fulfilling those engineers' design and prototype requirements."

About Mouser

Mouser Electronics, a privately held company and a subsidiary of TTI Inc., is the fastest-growing broad-line catalog distributor in the electronics industry and the only distributor whose rapid new product introduction gives customers a time-to-market advantage.

Mouser is the only distributor to publish a new 1,700 page print catalog every 90 days. The catalog has a yearly circulation of one million, with quarterly mailings of 250,000. In addition, its first-class Web site is updated daily and has more than 660,000 products available for online purchase 24 hours every day. Mouser.com also provides more than 480,000 downloadable data sheets, more than 1.5 million cross-references, and global shipment to 194 countries.

Known for its best-in-class customer service, Mouser sells innovative products from more than 325 premiere suppliers of semiconductors, optoelectronics, embedded solutions, passives, circuit protection, interconnects, wire and cable, electromechanical, sensors, enclosures and thermal management, power sources, test, tools, and specialty products. For more information about Mouser Electronics, visit www.mouser.com.

Trademarks: Mouser and Mouser Electronics are registered trademarks of Mouser Electronics Inc. All other products, logos, and company names mentioned herein may be trademarks of their respective owners.

About ON Semiconductor

With its global logistics network and strong portfolio of power semiconductor devices, ON Semiconductor is a preferred supplier of power solutions to engineers, purchasing professionals, distributors and contract manufacturers in the computer, cell phone, portable devices, automotive and industrial markets. For more information, please 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.