EXHIBIT 99.1



                  STATEMENT UNDER OATH OF PRINCIPAL EXECUTIVE
               OFFICER REGARDING FACTS AND CIRCUMSTANCES RELATING
                             TO EXCHANGE ACT FILINGS




I, Steven P. Hanson, state and attest that:

(1)      To the best of my knowledge, based upon a review of the covered reports
         of ON Semiconductor Corporation (the "Company"), and, except as
         corrected or supplemented in a subsequent covered report:

         -        no covered report contained an untrue statement of a material
                  fact as of the end of the period covered by such report (or in
                  the case of a report on Form 8-K or definitive proxy
                  materials, as of the date on which it was filed); and

         -        no covered report omitted to state a material fact necessary
                  to make the statements in the covered report, in light of the
                  circumstances under which they were made, not misleading as of
                  the end of the period covered by such report (or in the case
                  of a report on Form 8-K or definitive proxy materials, as of
                  the date on which it was filed).

(2)      I have reviewed the contents of this statement with the Company's Audit
         Committee.

(3)      In this statement under oath, each of the following, if filed on or
         before the date of this statement, is a "covered report":

         -        the Annual Report on Form 10-K of the Company for the fiscal
                  year ended December 31, 2001 filed with the Commission on
                  March 29, 2002;

         -        all reports on Form 10-Q, all reports on Form 8-K and all
                  definitive proxy materials of the Company filed with the
                  Commission subsequent to the filing of the Form 10-K
                  identified above; and

         -        any amendments to any of the foregoing.


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/S/ STEVEN P. HANSON
- -----------------------------
Steven P. Hanson
President and
Chief Executive Officer
(Principal Executive Officer)

Date: August 12, 2002


                                      Subscribed and sworn to before me
                                      this 12th day of August 2002.

[Notary Seal]

                                      /S/ LINDA M. LEE
                                      Notary Public
                                      My Commission Expires:  September 24, 2004




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