SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Schromm William A. (Last) (First) (Middle) 5005 EAST MCDOWELL ROAD (Street) PHOENIX AZ 85008 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 08/25/2014	3. Issuer Name and Ticker or Trading Symbol ON SEMICONDUCTOR CORP [ ONNN ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) EVP & Chief Operating Officer	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common	223,407	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	03/03/2009(1)	03/03/2018	Common	80,000	$5.93	D
Stock Option (right to buy)	03/23/2007(2)	03/23/2016	Common	27,000	$6.83	D
Stock Option (Right to Buy)	03/05/2013(3)	03/05/2019	Common	54,366	$8.4	D
Stock Option (right to buy)	03/05/2008(4)	03/05/2017	Common	60,000	$9.208	D

Explanation of Responses:

1. Granted on March 3, 2008 under the Issuer's 2000 Stock Incentive Plan. The option vested in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date.

2. Granted on March 23, 2006 under the Issuer's 2000 Stock Incentive Plan. The option vested in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date.

3. Granted on March 5, 2012 under the Issuer's Amended and Restated Stock Incentive Plan ("Amended and Restated SIP"). The option is exercisable as follows: 25% on March 13, 2013 and approximately 6.25% quarterly thereafter on June 5th, September 5th, December 5th and March 5th, up to and including March 5, 2016, subject to continued employment with the Issuer and other terms and conditions of the Amended and Restated SIP and the related stock option agreement.

4. Granted on March 5, 2007 under the Issuer's 2000 Stock Incentive Plan. The option vested in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date.

Remarks:

S. Gary Shullaw is signing on behalf of the Reporting Person pursuant to a Power of Attorney attached herein as an Exhibit. schromm2014poa.txt

	S. Gary Shullaw, Attorney-in-Fact	09/04/2014
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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