PHOENIX--(BUSINESS WIRE)--ON Semiconductor Corporation (Nasdaq: ON), driving energy efficient innovations, plans to announce its financial results for the first quarter ending April 3, 2015, before the market opens on Monday, May 4, 2015. The company will host a conference call at 9:00 a.m. Eastern Time (EDT) on Monday, May 4, 2015, 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