Direct Answer
ON Semiconductor reports revenue across 3 business segments in its fiscal 2025 Form 10-K. Power Solutions Group is the largest, with $2.8 billion of revenue (47% of the total), followed by Analog Mixed Signal Group at $2.3 billion (38%). 21% of revenue came from the United States.
How Does ON Semiconductor Make Money?
No single line supplies a majority of revenue: the largest, Power Solutions Group, is 47%, which spreads ON Semiconductor's exposure across several demand drivers. Between fiscal 2024 and 2025, Analog Mixed Signal Group grew fastest (-13.3%) and Intelligent Sensing Group slowest (-17.5%), so the revenue mix tilts toward Analog Mixed Signal Group while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Power Solutions Group | $2.8 billion | $3.3 billion | 46.8% | -16.2% |
| Analog Mixed Signal Group | $2.3 billion | $2.6 billion | 37.7% | -13.3% |
| Intelligent Sensing Group | $928 million | $1.1 billion | 15.5% | -17.5% |
Where Does ON Semiconductor's Revenue Come From?
Regions follow the definitions in the filing; most companies assign revenue by customer location.
| Region | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Hong Kong | $1.6 billion | $1.8 billion | 27.3% | -8.1% |
| United Kingdom | $1.3 billion | $1.6 billion | 22.5% | -17.8% |
| Singapore | $1.3 billion | $1.7 billion | 20.9% | -27.7% |
| United States | $1.2 billion | $1.3 billion | 20.5% | -5.9% |
| Other Geographical Areas | $531 million | $625 million | 8.9% | -15.0% |
What the Segment Figures Do Not Show
The rows above add up to 100% of ON Semiconductor's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value ON Semiconductor reported in the segment note and revenue disclosures of its Form 10-K filed February 9, 2026 (accession 0001097864-26-000006), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are ON Semiconductor's business segments?
In its fiscal 2025 Form 10-K, ON Semiconductor reports revenue for Power Solutions Group, Analog Mixed Signal Group and Intelligent Sensing Group.
Which part of ON Semiconductor brings in the most revenue?
Power Solutions Group, with $2.8 billion of revenue in fiscal 2025, or 47% of the total.
How much of ON Semiconductor's revenue comes from outside the United States?
79% in fiscal 2025, by the geographic breakdown ON Semiconductor reports in its Form 10-K. Companies assign revenue to regions differently (customer location, shipping address or selling entity), so check the filing's definition before comparing companies.