Semiconductor Components Industries 401(k) and retirement plans

Semiconductor Components Industries, LLC, Scottsdale, AZ. EIN 36-4292817. Annual reports 2009–2024. Also filed as On Semiconductor; On Semiconductor Corporation; On Semiconductor Corportaion.

Semiconductor Components Industries, LLC has 2 active retirement plans on file. The largest is the Onsemi 401(k) Plan, with 6,173 participants and $1.3 billion in assets in 2024. Fidelity has been its recordkeeper since 2023. No traditional pension plan appears in Semiconductor Components Industries's filings since 2009.

Active plans: 2
Participants: 6,293
Plan assets: $1.3 billion
401(k) recordkeeper: Fidelity
Plans on file: 2
Industry: Manufacturing

All 2 plans

Active plans first

Onsemi 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 36-4292817
Participants (2024): 6,173
Net assets (2024): $1.3 billion
Recordkeeper: FidelityEarlier: Vanguard (2009–2022)
Plan administrator: Semiconductor Components Industries, LLC
5701 North Pima Road
Scottsdale, AZ 85250
(602) 244-6600As filed for 2024
In effect since: August 1, 1999

Earlier sponsor: On Semiconductor (2009–2023).

Earlier plan names: On Semiconductor 401K Plan; On Semiconductor 401(k) Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	6,173	$1.3 billion	Fidelity
2023	6,525	$1.2 billion	Fidelity
2022	5,876	$1.1 billion	Vanguard
2021	5,728	$1.4 billion	Vanguard
2020	5,853	$1.3 billion	Vanguard
2019	5,987	$1.1 billion	Vanguard
2018	5,847	$917 million	Vanguard
2017	5,552	$935 million	Vanguard
2016	5,331	$771 million	Vanguard
2015	4,345	$576 million	Vanguard
2014	4,190	$563 million	Vanguard
2013	3,297	$484 million	Vanguard
2012	3,370	$409 million	Vanguard
2011	3,817	$375 million	Vanguard
2010	3,378	$372 million	Vanguard
2009	4,068	$323 million	Vanguard

Onsemi Union Savings and Retirement Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 002Employer EIN 36-4292817
Participants (2024): 120
Net assets (2024): $12.2 million
Recordkeeper: FidelityEarlier: Vanguard (2016–2022)
Plan administrator: Semiconductor Components Industries, LLC
5701 North Pima Road
Scottsdale, AZ 85250
(602) 244-6600As filed for 2024
In effect since: September 19, 2016

Earlier sponsors: On Semiconductor Corportaion (2016); On Semiconductor Corporation (2017–2023).

Earlier plan names: On Semiconductor Union Savings and Retirement Plan.

Year by year, 2016 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	120	$12.2 million	Fidelity
2023	137	$13.2 million	Fidelity
2022	152	$12.2 million	Vanguard
2021	138	$14.6 million	Vanguard
2020	145	$15.0 million	Vanguard
2019	142	$15.5 million	Vanguard
2018	129	$13.1 million	Vanguard
2017	101	$13.6 million	Vanguard
2016	100	$12.2 million	Vanguard

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Onsemi 401(k) Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((602) 244-6600). That number was filed for 2024; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 2 plans

Onsemi 401(k) Plan

Onsemi Union Savings and Retirement Plan

If you had money in one of these plans

What these numbers are

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