ON Semiconductor Honored by European Council for Nuclear Research for Supplying Complex Chips to the ATLAS Particle Physics Experiment

CERN bestows Industrial Award on the company for its contribution of complex Pixel Particle Sensor Chips

GENEVA, Switzerland - Nov. 27, 2007 - ON Semiconductor (NASDAQ: ONNN) a leading global supplier of efficient power solutions, was honored today by the European Council for Nuclear Research (CERN), with an Industrial Award recognizing the company’s contribution in supplying complex “Pixel Particle Sensor” chips for use in CERN’s ATLAS particle physics experiment.

CERN is the world’s largest particle physic laboratory. The ATLAS collaboration is one of the CERN’s four major particle physics experiments. Utilizing CERN’s Large Hadron Collider (LHC), ATLAS will explore the fundamental nature of matter and the basic forces that shape the universe. Starting in mid-2008, the ATLAS detector will search for new discoveries in the head-on collisions of protons of extraordinarily high energy up to 7 trillion electron volts (TeV) per proton. ATLAS is one of the largest collaborative efforts ever attempted in the physical sciences, with 1,900 physicists from more than 166 universities and laboratories in 37 countries participating.

ON Semiconductor, in close co-operation with the Institute of Physics of Academy of Sciences of the Czech Republic, developed special technology using lithography on both sides of silicon wafers to deliver large area chips of Pixel Particle Sensors designed by ATLAS for use in the inner silicon tracker.

To date, the company’s efforts have been supported by a grant from the Czech Ministry of Trade and Industry.

“Customized double-sided technology for the Pixel Particle Sensors was developed and chips were produced at the ON Semiconductor production facility in Rožnov pod Radhoštěm in the Czech Republic, in close co-operation with the Institute of Physics of Academy of Sciences of the Czech Republic,” said Michael Mandracchia, vice president and general manager of ON Semiconductor Czech Republic and Slovakia. ”Hundreds and sometimes thousand of semiconductor chips are normally made simultaneously on each silicon wafer. In the case of the ATLAS Pixel Sensors, we made only three sensors on each wafer with active structures on both sides of the wafers. These wafers are half the thickness of standard production wafers. The process is extremely demanding because of the need for low defect density and careful wafer handling.”

Further information about the ATLAS Collaboration can be found at https://atlas.ch/.

“ON Semiconductor’s successful participation in the ATLAS collaboration offers further encouragement to our research team to continue their development of particle sensors and to also develop dedicated technology for strip and pad particle sensors,” said Peter Zdebel, ON Semiconductor senior vice president and chief technology officer. “We plan to continue our effort toward future projects in particle physics – including International Linear Collider (ILC) and several other running international scientific projects. We feel privileged to be a part of these global research projects and value the opportunity to demonstrate the technical talent of our in-house team of experts”.

ON Semiconductor has a longstanding business history in Central Europe. The company owns and operates a silicon production facility, a wafer fabrication plant, and a product development center in Rožnov pod Radhoštěm, Czech Republic. It also owns a product development center, a wafer fabrication facility, and a customer service and logistics center in Slovakia.

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 https://www.onsemi.com.

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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.

About onsemi

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

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onsemi and the onsemi logo are 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 website in this news release, information on the website is not to be incorporated herein.

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