SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

March 17, 2003
Date of report (Date of earliest event reported)

ON Semiconductor Corporation

(Exact name of registrant as specified in its charter)

Delaware	000-30419	36-3840979
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification Number)
ON Semiconductor Corporation 5005 E. McDowell Road Phoenix, Arizona		85008
(Address of principal executive offices)		(Zip Code)

602-244-6600
(Registrant’s telephone number, including area code)

TABLE OF CONTENTS

	Item 5. Other Events and Required FD Disclosure.
	Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.
SIGNATURES
EXHIBIT INDEX
EX-99

Item 5. Other Events and Required FD Disclosure.

Attached to this Current Report as Exhibit 99 is a copy of a press release for ON Semiconductor Corporation dated March 17, 2003 titled “ON Semiconductor Board Elects Chief Financial Officer.”

Item 7.   Financial Statements, Pro Forma
Financial Information and Exhibits.

(a)	Financial Statements of Businesses Acquired Not applicable.
(b)	Pro Forma Financial Information Not applicable.
(c)	Exhibits

Exhibit Number	Description
99	Press release for ON Semiconductor Corporation dated March 17, 2003 titled “ON Semiconductor Board Elects Chief Financial Officer.”

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

ON SEMICONDUCTOR CORPORATION
                       (Registrant)

Date: March 17, 2003 By: /S/ JUDITH A. BOYLE Judith A. Boyle
Vice President and
Assistant General Counsel

EXHIBIT INDEX

Exhibit Number	Description
99	Press release for ON Semiconductor Corporation dated March 17, 2003 titled “ON Semiconductor Board Elects Chief Financial Officer.”