Company lists · Data refreshed September 2026

Top 25 Semiconductor tool makers based in the United States

Name: Semiconductor tool makers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 384 companies tracked

RevenueBase identified 384 semiconductor tool makers headquartered in the United States as of September 2026 and tracks 85,484 professional contacts across them, including 35,443 with verified work emails. San Jose is the largest hub.

This list covers semiconductor tool makers 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

384Companies

85,484Contacts tracked

35,443Verified emails

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The 25 largest semiconductor tool makers based in the United States

Ranked by team size

Top 25 of 384 semiconductor tool makers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to semiconductor tool makers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Applied Materials	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 17, 2026	10001+	26,341 contacts →
	Partial evidence “Applied Materials is the leader in materials engineering solutions that are at the foundation of virtually every new semiconductor and advanced display in the world.” Source: RevenueBase Database · checked Sep 17, 2026
2	LAM Research	Partial evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	10001+	14,686 contacts →
	Partial evidence “Lam Research Corp.(NASDAQ:LRCX) At Lam Research, we create equipment that drives technological advancements in the semiconductor industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	KLA	Indirect evidence	Milpitas, CA, United StatesHQ checked Sep 17, 2026	10001+	12,672 contacts →
	Indirect evidence “KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	MKS INC	Indirect evidence	Andover, MA, United StatesHQ checked Sep 17, 2026	10001+	3,782 contacts →
	Indirect evidence “MKS enables technologies that transform our world.” Source: RevenueBase Database · checked Sep 17, 2026
5	Tokyo Electron US	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	10001+	2,812 contacts →
	Partial evidence “Since its founding in 1963, TEL has grown to encompass many offices around the world that engineer, manufacture, sell, and service wafer-processing or semiconductor production…” Source: RevenueBase Database · checked Sep 17, 2026
6	Ultra Clean Technology	Partial evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,287 contacts →
	Partial evidence “UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Source: RevenueBase Database · checked Sep 17, 2026
7	Brooks Automation	Partial evidence	Chelmsford, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,695 contacts →
	Partial evidence “Brooks is a leading provider of automation solutions with over 40 years of experience in the semiconductor industry.” Source: RevenueBase Database · checked Sep 17, 2026
8	Thorlabs	Indirect evidence	Newton, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,348 contacts →
	Indirect evidence “Thorlabs is a leading designer and manufacturer of photonics equipment for research, manufacturing, and biomedical applications.” Source: RevenueBase Database · checked Sep 17, 2026
9	Axcelis Technologies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,288 contacts →
	Indirect evidence “Axcelis Technologies, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
10	VEECO	Indirect evidence	Plainview, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,189 contacts →
	Indirect evidence “Making a Material Difference is at the core of our DNA.” Source: RevenueBase Database · checked Sep 17, 2026
11	Onto Innovation	Indirect evidence	Wilmington, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,186 contacts →
	Indirect evidence “Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: Un-patterned wafer quality; 3D…” Source: RevenueBase Database · checked Sep 17, 2026
12	Cohu, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	769 contacts →
	Partial evidence “Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Source: RevenueBase Database · checked Sep 17, 2026
13	CYMER	Partial evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	711 contacts →
	Partial evidence “Cymer, an ASML company, is a market-leading provider of sophisticated light sources used by chipmakers around the globe to pattern advanced semiconductor chips.” Source: RevenueBase Database · checked Sep 17, 2026
14	Sunedison Semiconductor	Partial evidence	St. Peters, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	693 contacts →
	Partial evidence “SunEdison Semiconductor's silicon wafers are the foundation for intelligent electronics in devices such as computers, smart phones, TVs, gaming devices, music players, appliances…” Source: RevenueBase Database · checked Sep 17, 2026
15	GT Advanced Technologies	Partial evidence	Hudson, NH, United StatesHQ checked Sep 17, 2026	n/a	654 contacts →
	Partial evidence “GTAT is a producer of high-quality crystal materials for applications as diverse as advanced semiconductors, high-energy lasers, and aerospace/defense windows.” Source: RevenueBase Database · checked Sep 17, 2026
16	Mattson Technology	Partial evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	501-1,000	579 contacts →
	Partial evidence “Mattson Technology designs, manufactures, markets and supports semiconductor wafer processing equipment used in the fabrication of integrated circuits.” Source: RevenueBase Database · checked Sep 17, 2026
17	Photronics	Partial evidence	Brookfield, CT, United StatesHQ checked Sep 17, 2026	1,001-5,000	551 contacts →
	Partial evidence “Photronics is a global leader in the design, development, and production of reticles and photomasks- the critical components at the heart of semiconductor and microelectronic…” Source: RevenueBase Database · checked Sep 17, 2026
18	Silfex, Inc.	Partial evidence	Eaton, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	512 contacts →
	Partial evidence “A Lam Research Company, providing precision silicon components powering global semiconductor innovation.” Source: RevenueBase Database · checked Sep 17, 2026
19	SEH America	Partial evidence	Vancouver, WA, United StatesHQ checked Sep 17, 2026	501-1,000	493 contacts →
	Partial evidence “SEH America is part of the largest producer of semiconductor silicon in the world, Shin-Etsu Handotai (SEH), Ltd, headquartered in Tokyo, and is an integral part of the ShinEtsu…” Source: RevenueBase Database · checked Sep 17, 2026
20	Screen SPE USA	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 17, 2026	201-500	455 contacts →
	Partial evidence “A Wholly-owned subsidiary of Screen Holdings Co, Ltd, of Kyoto, Japan, SCREEN SPE USA, LLC provides sales, service and support for SCREEN's market share leading semiconductor…” Source: RevenueBase Database · checked Sep 17, 2026
21	Polar Semiconductor	Partial evidence	Bloomington, MN, United StatesHQ checked Sep 17, 2026	501-1,000	450 contacts →
	Partial evidence “Located in Bloomington, Minnesota, Polar Semiconductor, LLC has decades of experience in high-performance, automotive-grade semiconductor manufacturing.” Source: RevenueBase Database · checked Sep 17, 2026
22	Brewer Science	Indirect evidence	Rolla, MO, United StatesHQ checked Sep 17, 2026	201-500	437 contacts →
	Indirect evidence “Brewer Science is a global technology leader in developing and manufacturing innovative materials, processes, and equipment for the reliable fabrication of cutting-edge…” Source: RevenueBase Database · checked Sep 17, 2026
23	Universal Instruments Corporation	Partial evidence	Conklin, NY, United StatesHQ checked Sep 17, 2026	501-1,000	410 contacts →
	Partial evidence “We are a technology leader in the design and manufacture of precision automation solutions for the semiconductor and electronics manufacturing industry.” Source: RevenueBase Database · checked Sep 17, 2026
24	Modern Industries	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 17, 2026	201-500	354 contacts →
	Indirect evidence “Modern Industries, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
25	Ebara Technologies	Partial evidence	Sacramento, CA, United StatesHQ checked Sep 17, 2026	201-500	315 contacts →
	Partial evidence “EBARA Technologies Incorporated operates two divisions (Components Division / Semiconductor Equipment Division) and is the North American subsidiary of EBARA CORPORATION…” Source: RevenueBase Database · checked Sep 17, 2026

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: semiconductor tool makers. 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 semiconductor tool makers.
Partial evidence: Its own public description names part of semiconductor tool makers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name semiconductor tool makers. 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 384 semiconductor tool makers based in the United States

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Semiconductor tool makers based in the United States at a glance

As of Sep 17, 2026

41.5%Verified-email coverage

222.6Average contacts per company

11-50Median size (employees)

9.9%Largest-city concentration · San Jose

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

116

11-50

133

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 384 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 semiconductor tool makers, 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 “semiconductor tool makers”. 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 semiconductor tool makers), 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 semiconductor tool makers, 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, 35,443 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 17, 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.

Semiconductor tool makers by metro

Semiconductor tool makers in San Jose38
Semiconductor tool makers in Austin26

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 semiconductor tool makers, 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 semiconductor tool makers are there based in the United States?

RevenueBase identified 384 semiconductor tool makers 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?

Applied Materials, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most semiconductor tool makers?

San Jose leads with 38 headquartered companies, followed by Austin (26) and Fremont (22).

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 35,443 verified decision-maker contacts tracked across these 384 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 17, 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.