Company provides conference-call details

PHOENIX, Ariz. – July 9, 2014 – ON Semiconductor Corporation (Nasdaq: ONNN), driving energy efficient innovation, plans to announce its financial results for the second quarter, ending June 27, 2014, after the market closes on Thursday, July 31, 2014.

The company will host a conference call at 5:00 p.m. Eastern Daylight Time (EDT) on July 31, 2014, following the release of its financial results. Investors and interested parties can access the conference call in the following manner:

• Webcast: A live webcast of the conference call will be available via the “Investors” section of the company’s website at http://www.onsemi.com. The re-broadcast of the call will be available at this site approximately one hour following the live broadcast and will continue for 30 days.

• Teleconference: A telephone conference of the earnings report can be accessed by dialing (888) 291-2604 (U.S./Canada) or (760) 536-5202 (International). In order to join this conference call, you will be required to provide the Conference ID Number – which is 30869557.

• Teleconference Replay: Approximately two hours following the live broadcast, the company will provide a dial-in replay that will continue to be available through Sept. 1, 2014. To listen to the teleconference replay, call (855) 859-2056 (U.S./Canada) or (404) 537-3406 (International). You will be required to provide the Conference ID Number – which is 30869557.

Follow @onsemi on Twitter: www.twitter.com/onsemi

About ON Semiconductor

ON Semiconductor (Nasdaq: ONNN) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions. For more information, visit http://www.onsemi.com.