Partner Press Release
On Semiconductor™ Joins RosettaNet Consortium

For Release June 19, 2000

PHOENIX

ON Semiconductor (Nasdaq: ONNN) today announced that it has become a member of the RosettaNet consortium. ON Semiconductor and RosettaNet share the vision of improving the efforts to develop, promote and lead the adoption of both open content and open transaction standards for electronic commerce across the supply chain. "RosettaNet has established itself as an influential group that is well positioned to drive open standards globally by allowing all the players in the supply chain to maximize use of the internet to conduct day to day business more efficiently" said Colum O'Neill, Director of Internet Business at ON Semiconductor.

Jennifer Hamilton, Chief Executive Officer of RosettaNet added, "RosettaNet standards are being developed and adopted by leading semiconductor companies across the globe. By facilitating a collaborative development and implementation environment with Supply Chain Partners such as ON Semiconductor, the RosettaNet consortium is creating global e-business process standards that enable efficient and dynamic trading partner relationships within the electronic components and IT industries. We are pleased to welcome the contributions of ON Semiconductor, one of the world's leading suppliers of analog, broadband and discrete semiconductor ICs."

About ON Semiconductor
ON Semiconductor, formerly a division of Motorola, is one of the world's largest suppliers of analog, standard logic, and discrete semiconductors for data and power management. ON Semiconductor's products include integrated circuits for high-bandwidth data applications, analog ICs for power management and low-voltage power transistors. In addition to using micropackaging technology across all product families, ON Semiconductor offers the largest selection of discrete semiconductors in a variety of surface mount and standard packages. These semiconductors turn on and connect digital electronic products to our world. ON Semiconductor™ is the trade name of SCG Holding Corporation's affiliate, Semiconductor Components Industries, LLC. Further information is available at the Company's website: http://www.onsemi.com.

About RosettaNet
RosettaNet is an independent, self-funded, non-profit consortium dedicated to the development and deployment of standard electronic business interfaces to align the processes between supply chain partners on a global basis. Launched in June 1998, RosettaNet is currently in the pilot phase of its implementation cycle. More than 250 companies representing over $1 trillion in annual information technology and electronic components revenues currently participate in RosettaNet's standards development, strategy and implementation activities.

A complete list of member companies and more information on RosettaNet can be found at www.rosettanet.org.