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                                                                    EXHIBIT 23.1



                         CONSENT OF INDEPENDENT AUDITORS



We consent to the incorporation by reference in the registration statement filed
on Form S-8 of ON Semiconductor Corporation filed on or about October 10, 2001
of our report dated January 7, 2000 on the combined statements of revenues less
direct and allocated expenses before taxes of the Semiconductor Components Group
of Motorola, Inc. for the period from January 1, 1999 through August 3, 1999 and
the year ended December 31,1998, which appears in the Annual Report to
Stockholders, which is incorporated by reference in the Annual Report on Form
10-K/A of ON Semiconductor Corporation for the year ended December 31, 2000

/S/ KPMG LLP

Phoenix, Arizona
October 9, 2001