Company lists · Data refreshed September 2026
Top 25 Switch mode power supply manufacturers based in the United States
RevenueBase identified 98 switch mode power supply manufacturers headquartered in the United States as of September 2026 and tracks 7,334 professional contacts across them, including 2,295 with verified work emails. City Of Industry is the largest hub.
This list covers switch mode power supply manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest switch mode power supply manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,115 contacts → | ||||
Strong evidence “Power Integrations, Inc, is a Silicon Valley-based supplier of high-performance electronic components used in high-voltage power-conversion systems.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,111 contacts → | ||||
Strong evidence “Artesyn Embedded Power is an Advanced Energy product brand and is well recognized as a global leader in the design and manufacture of highly reliable power conversion solutions…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,071 contacts → | ||||
Partial evidence “Monolithic Power Systems, Inc.(MPS) provides small, highly energy efficient, easy-to-use power solutions for systems found in industrial applications, telecom infrastructures…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 821 contacts → | ||||
Strong evidence “Vicor Corporation designs, develops, manufactures and markets modular power components and complete power systems based upon a portfolio of patented technologies.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 369 contacts → | ||||
Partial evidence “Murata Power Solutions is powering the future with sustainable energy solutions.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 290 contacts → | ||||
Strong evidence “Astrodyne TDI is a custom designer and manufacturer of innovative power solutions for demanding applications worldwide.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 263 contacts → | ||||
Partial evidence “SL Power Electronics is a global leader in the design, manufacturing and marketing of differentiated internal and external AC/DC and DC/DC power conversion solutions for highly…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 231 contacts → | ||||
Strong evidence “Since 2010, EPC Power is a power solutions platform that designs, engineers and manufactures advanced power conversion solutions in the USA for data center, energy storage and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 206 contacts → | ||||
Partial evidence “At CUI our purpose is straight-forward: power products how you want them, when you want them.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 131 contacts → | ||||
Partial evidence “Stored Energy Systems (SENS) is a Colorado-based designer and manufacturer in mission-critical environments like data centers, hospitals, utilities, and telecommunications…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 127 contacts → | ||||
Partial evidence “Located on California’s beautiful Central Coast, Rantec Power Systems has been providing power conversion products since 1971.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 75 contacts → | ||||
Strong evidence “Kepco Inc, has been making electronic d-c power supplies, both modular and instrument type, since 1946.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 34 contacts → | ||||
Strong evidence “Military, Aerospace, Industrial, Commercial, Telecom & Custom Power Supply Solutions.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 31 contacts → | ||||
Partial evidence “NetPower is a technology leader of open-frame and encapsulated high efficiency and high density DC-DC and AC-DC power converters.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 28 contacts → | ||||
Strong evidence “Since 1985, Hatch Lighting has specialized in the design and manufacture of energy-efficient electronic power supplies for lighting applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 27 contacts → | ||||
Partial evidence “Calex Manufacturing Co, Inc, a subsidiary of Murata Power Solutions, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 24 contacts → | ||||
Strong evidence “Acopian Power Supplies manufactures an exceptionally diverse line of AC-to-DC power supplies, DC-to-DC converters, high voltage power supplies, and redundant output power packages…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 18 contacts → | ||||
Strong evidence “Darrah Electric Company is a manufacturer of high quality DC power supplies and power assembly solutions, and a distributor of power semiconductors and related components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 18 contacts → | ||||
Strong evidence “Headquartered on Long Island New York, SPI has been manufacturing switching mode power supplies since 1976.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 15 contacts → | ||||
Indirect evidence “Oztek, now part of Trystar, was founded in 1997 is a U.S.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 14 contacts → | ||||
Strong evidence “Cosel is one of world's leading manufacturers of switch mode AC-DC power supplies, DC-DC converters and EMI filters.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 14 contacts → | ||||
Strong evidence “UNIPOWER is a world-leading provider of dependable high‐efficiency power electronics and energy conversion systems and power supplies.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 12 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 12 contacts → | ||||
Indirect evidence “MEGA Electronics Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Strong evidence “American CRS Equipment offers the largest range of high-power, modular, switchmode supplies available in the industry.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: switch mode power supply manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names switch mode power supply manufacturers.
- Partial evidence
- Its own public description names part of switch mode power supply manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name switch mode power supply manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 98 switch mode power supply manufacturers based in the United States
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Switch mode power supply manufacturers based in the United States at a glance
As of Sep 30, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 98 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among switch mode power supply manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “switch mode power supply manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names switch mode power supply manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among switch mode power supply manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,295 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names switch mode power supply manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many switch mode power supply manufacturers are there based in the United States?
RevenueBase identified 98 switch mode power supply manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Power Integrations, headquartered in San Jose, tops this list with the largest team on record.
Which city has the most switch mode power supply manufacturers?
City Of Industry leads with 3 headquartered companies, followed by Irvine (3) and Milpitas (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,295 verified decision-maker contacts tracked across these 98 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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