Company lists · Data refreshed September 2026
Top 25 Fab foundries based in the United States
RevenueBase identified 247 company matches for fab foundries associated with the United States as of September 2026 and tracks 53,133 professional contacts across them, including 20,958 with verified work emails. San Jose is the largest hub.
This list covers company matches for fab foundries associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 fab foundries based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 14,686 contacts → | ||||
Exact match “Lam Research Corp.(NASDAQ:LRCX) At Lam Research, we create equipment that drives technological advancements in the semiconductor industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 12,672 contacts → | ||||
Exact match “KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 6,435 contacts → | ||||
Exact match “Amkor Technology, Inc.(Nasdaq: AMKR) is the world’s largest U.S-headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 2,812 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 2,287 contacts → | ||||
Exact match “UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 2,011 contacts → | ||||
Exact match “Please consider following the page of Infineon - as we are now Infineon -).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 1,186 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 693 contacts → | ||||
Exact match “SunEdison Semiconductor's silicon wafers are the foundation for intelligent electronics in devices such as computers, smart phones, TVs, gaming devices, music players, appliances…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 674 contacts → | ||||
Exact match “SkyWater (NASDAQ: SKYT) is a U.S-based semiconductor manufacturer and a DMEA-accredited Category 1A Trusted Supplier.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 579 contacts → | ||||
Exact match “Mattson Technology designs, manufactures, markets and supports semiconductor wafer processing equipment used in the fabrication of integrated circuits.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 523 contacts → | ||||
Exact match “Founded in 2007, headquartered in Santa Clara (Silicon Valley) with operations in Dhaka, Bangladesh.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 512 contacts → | ||||
Exact match “A Lam Research Company, providing precision silicon components powering global semiconductor innovation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 510 contacts → | ||||
Exact match “TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 450 contacts → | ||||
Exact match “Located in Bloomington, Minnesota, Polar Semiconductor, LLC has decades of experience in high-performance, automotive-grade semiconductor manufacturing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 437 contacts → | ||||
Exact match “Brewer Science is a global technology leader in developing and manufacturing innovative materials, processes, and equipment for the reliable fabrication of cutting-edge…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 293 contacts → | ||||
Exact match “Cohu is a publicly traded (NASDAQ: COHU) global company with headquarters in Poway, CA.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 280 contacts → | ||||
Exact match “With the acquisition of R&D Altanova by Advantest, I am pleased I am now part of Advantest Interconnect Solutions (AIS).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 217 contacts → | ||||
Exact match “Our mission: to deliver secure, reliable, state-of-the-art semiconductors and semiconductor services with unwavering integrity.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 181 contacts → | ||||
Exact match “ULVAC Technologies, Inc.(ISO 9001:2008) was established in 1992 as the US subsidiary of ULVAC, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 167 contacts → | ||||
Exact match “Jireh Semiconductor is the wafer fabrication facility of Alpha and Omega Semiconductor in Hillsboro, OR.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 151 contacts → | ||||
Exact match “Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 132 contacts → | ||||
Exact match “ISE Labs is a one-stop semiconductor engineering service provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 124 contacts → | ||||
Exact match “LA Semiconductor is a US-owned semiconductor foundry located in Pocatello, Idaho, that specializes in the fabrication of Analog, Mixed Signal, and Power products.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 112 contacts → | ||||
Exact match “Established in 1909, Wisconsin Aluminum Foundry has consistently provided the finest quality aluminum and copper based alloy castings for a wide variety of industries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 107 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “fab foundries”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 247 fab foundries based in the United States
See the full list, filter by size, metro and specialty, and access 20,958 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Fab foundries based in the United States at a glance
As of Sep 20, 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 247 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “fab foundries” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 20,958 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fab foundries”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fab foundries are there based in the United States?
RevenueBase identified 247 company matches for fab foundries associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
LAM Research tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most fab foundries?
San Jose leads with 15 company records, followed by Fremont (11) and Sunnyvale (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 20,958 professional contacts with verified work emails tracked across these 247 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 247 fab foundries based in the United States. Start with a free account, no credit card.
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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 SmartSearch, 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.
More company lists
Company intelligence · public preview
Top 25 fab foundries based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 247 matching company records for fab foundries based in the United States, with 53,133 tracked contacts and 20,958 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fab foundries based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  LAM Researchlamresearch.comHQ: Fremont, CA, United StatesReported employees: 10001+ | Fremont, CA, United States | 10001+ | Exact match | 14,686 contacts → |
“Lam Research Corp.(NASDAQ:LRCX) At Lam Research, we create equipment that drives technological advancements in the semiconductor industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  KLAkla.comHQ: Milpitas, CA, United StatesReported employees: 10001+ | Milpitas, CA, United States | 10001+ | Exact match | 12,672 contacts → |
“KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Amkor Technology, INCamkor.comHQ: Tempe, AZ, United StatesReported employees: 10001+ | Tempe, AZ, United States | 10001+ | Exact match | 6,435 contacts → |
“Amkor Technology, Inc.(Nasdaq: AMKR) is the world’s largest U.S-headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Tokyo Electron UStel.comHQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 2,812 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ultra Clean Technologyuct.comHQ: Hayward, CA, United StatesReported employees: 5,001-10,000 | Hayward, CA, United States | 5,001-10,000 | Exact match | 2,287 contacts → |
“UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Cypress Semiconductor Corporationinfineon.comHQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 2,011 contacts → |
“Please consider following the page of Infineon - as we are now Infineon -).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Onto Innovationontoinnovation.com HQ: Wilmington, MA, United StatesReported employees: 1,001-5,000 | Wilmington, MA, United States | 1,001-5,000 | Exact match | 1,186 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sunedison Semiconductorsunedisonsemi.com HQ: St. Peters, MO, United StatesReported employees: 1,001-5,000 | St. Peters, MO, United States | 1,001-5,000 | Exact match | 693 contacts → |
“SunEdison Semiconductor's silicon wafers are the foundation for intelligent electronics in devices such as computers, smart phones, TVs, gaming devices, music players, appliances…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Skywater Technologyskywatertechnology.comHQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 674 contacts → |
“SkyWater (NASDAQ: SKYT) is a U.S-based semiconductor manufacturer and a DMEA-accredited Category 1A Trusted Supplier.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Mattson Technologymattson.comHQ: Fremont, CA, United StatesReported employees: 501-1,000 | Fremont, CA, United States | 501-1,000 | Exact match | 579 contacts → |
“Mattson Technology designs, manufactures, markets and supports semiconductor wafer processing equipment used in the fabrication of integrated circuits.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ulkasemiulkasemi.comHQ: Santa Clara, CA, United StatesReported employees: 501-1,000 | Santa Clara, CA, United States | 501-1,000 | Exact match | 523 contacts → |
“Founded in 2007, headquartered in Santa Clara (Silicon Valley) with operations in Dhaka, Bangladesh.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Silfex, Inc.silfex.comHQ: Eaton, OH, United StatesReported employees: 1,001-5,000 | Eaton, OH, United States | 1,001-5,000 | Exact match | 512 contacts → |
“A Lam Research Company, providing precision silicon components powering global semiconductor innovation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Tsmc Washingtonwafertech.com HQ: Camas, WA, United StatesReported employees: 501-1,000 | Camas, WA, United States | 501-1,000 | Exact match | 510 contacts → |
“TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Polar Semiconductorpolarsemi.com HQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 450 contacts → |
“Located in Bloomington, Minnesota, Polar Semiconductor, LLC has decades of experience in high-performance, automotive-grade semiconductor manufacturing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Brewer Sciencebrewerscience.comHQ: Rolla, MO, United StatesReported employees: 201-500 | Rolla, MO, United States | 201-500 | Exact match | 437 contacts → |
“Brewer Science is a global technology leader in developing and manufacturing innovative materials, processes, and equipment for the reliable fabrication of cutting-edge…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Delta Designcohu.com HQ: Poway, CA, United StatesReported employees: 1,001-5,000 | Poway, CA, United States | 1,001-5,000 | Exact match | 293 contacts → |
“Cohu is a publicly traded (NASDAQ: COHU) global company with headquarters in Poway, CA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  R&d Altanovaadvantest.comHQ: South Plainfield, NJ, United StatesReported employees: 10001+ | South Plainfield, NJ, United States | 10001+ | Exact match | 280 contacts → |
“With the acquisition of R&D Altanova by Advantest, I am pleased I am now part of Advantest Interconnect Solutions (AIS).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Integra Technologies INCintegra-tech.comHQ: Wichita, KS, United StatesReported employees: 201-500 | Wichita, KS, United States | 201-500 | Exact match | 217 contacts → |
“Our mission: to deliver secure, reliable, state-of-the-art semiconductors and semiconductor services with unwavering integrity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ulvac Technologies, INCulvac.com HQ: Methuen, MA, United StatesReported employees: 51-200 | Methuen, MA, United States | 51-200 | Exact match | 181 contacts → |
“ULVAC Technologies, Inc.(ISO 9001:2008) was established in 1992 as the US subsidiary of ULVAC, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Jireh Semiconductor INCaosmd.comHQ: Hillsboro, OR, United StatesReported employees: 501-1,000 | Hillsboro, OR, United States | 501-1,000 | Exact match | 167 contacts → |
“Jireh Semiconductor is the wafer fabrication facility of Alpha and Omega Semiconductor in Hillsboro, OR.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cascade Microtechformfactor.com HQ: Beaverton, OR, United StatesReported employees: 1,001-5,000 | Beaverton, OR, United States | 1,001-5,000 | Exact match | 151 contacts → |
“Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | ISE Labs ASEiselabs.com HQ: Fremont, CA, United StatesReported employees: 51-200 | Fremont, CA, United States | 51-200 | Exact match | 132 contacts → |
“ISE Labs is a one-stop semiconductor engineering service provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  LA Semiconductorlasemiconductor.comHQ: Pocatello, ID, United StatesReported employees: 201-500 | Pocatello, ID, United States | 201-500 | Exact match | 124 contacts → |
“LA Semiconductor is a US-owned semiconductor foundry located in Pocatello, Idaho, that specializes in the fabrication of Analog, Mixed Signal, and Power products.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Wisconsin Aluminum Foundrywafco.com HQ: Manitowoc, WI, United StatesReported employees: 501-1,000 | Manitowoc, WI, United States | 501-1,000 | Exact match | 112 contacts → |
“Established in 1909, Wisconsin Aluminum Foundry has consistently provided the finest quality aluminum and copper based alloy castings for a wide variety of industries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tokyo Electron America, INCtokyoelectron.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 107 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 247 company matches
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Fab foundries: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
247 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 247 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for fab foundries?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fab foundries did RevenueBase find based in the United States?
The saved snapshot records 247 matching company records, 53,133 tracked contacts and 20,958 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fab foundries by geography
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 fab foundries based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/fab-foundries/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 fab foundries based in the United States
RevenueBase records 247 matching company records for fab foundries based in the United States, with 53,133 tracked contacts and 20,958 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fab foundries based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | LAM Researchlamresearch.com HQ: Fremont, CA, United StatesReported employees: 10001+ | Fremont, CA, United States | 10001+ | Exact match | 14,686 contacts → |
“Lam Research Corp.(NASDAQ:LRCX) At Lam Research, we create equipment that drives technological advancements in the semiconductor industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | KLAkla.com HQ: Milpitas, CA, United StatesReported employees: 10001+ | Milpitas, CA, United States | 10001+ | Exact match | 12,672 contacts → |
“KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Amkor Technology, INCamkor.com HQ: Tempe, AZ, United StatesReported employees: 10001+ | Tempe, AZ, United States | 10001+ | Exact match | 6,435 contacts → |
“Amkor Technology, Inc.(Nasdaq: AMKR) is the world’s largest U.S-headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Tokyo Electron UStel.com HQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 2,812 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ultra Clean Technologyuct.com HQ: Hayward, CA, United StatesReported employees: 5,001-10,000 | Hayward, CA, United States | 5,001-10,000 | Exact match | 2,287 contacts → |
“UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Cypress Semiconductor Corporationinfineon.com HQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 2,011 contacts → |
“Please consider following the page of Infineon - as we are now Infineon -).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Onto Innovationontoinnovation.com HQ: Wilmington, MA, United StatesReported employees: 1,001-5,000 | Wilmington, MA, United States | 1,001-5,000 | Exact match | 1,186 contacts → |
“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…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sunedison Semiconductorsunedisonsemi.com HQ: St. Peters, MO, United StatesReported employees: 1,001-5,000 | St. Peters, MO, United States | 1,001-5,000 | Exact match | 693 contacts → |
“SunEdison Semiconductor's silicon wafers are the foundation for intelligent electronics in devices such as computers, smart phones, TVs, gaming devices, music players, appliances…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Skywater Technologyskywatertechnology.com HQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 674 contacts → |
“SkyWater (NASDAQ: SKYT) is a U.S-based semiconductor manufacturer and a DMEA-accredited Category 1A Trusted Supplier.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mattson Technologymattson.com HQ: Fremont, CA, United StatesReported employees: 501-1,000 | Fremont, CA, United States | 501-1,000 | Exact match | 579 contacts → |
“Mattson Technology designs, manufactures, markets and supports semiconductor wafer processing equipment used in the fabrication of integrated circuits.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ulkasemiulkasemi.com HQ: Santa Clara, CA, United StatesReported employees: 501-1,000 | Santa Clara, CA, United States | 501-1,000 | Exact match | 523 contacts → |
“Founded in 2007, headquartered in Santa Clara (Silicon Valley) with operations in Dhaka, Bangladesh.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Silfex, Inc.silfex.com HQ: Eaton, OH, United StatesReported employees: 1,001-5,000 | Eaton, OH, United States | 1,001-5,000 | Exact match | 512 contacts → |
“A Lam Research Company, providing precision silicon components powering global semiconductor innovation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Tsmc Washingtonwafertech.com HQ: Camas, WA, United StatesReported employees: 501-1,000 | Camas, WA, United States | 501-1,000 | Exact match | 510 contacts → |
“TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Polar Semiconductorpolarsemi.com HQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 450 contacts → |
“Located in Bloomington, Minnesota, Polar Semiconductor, LLC has decades of experience in high-performance, automotive-grade semiconductor manufacturing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Brewer Sciencebrewerscience.com HQ: Rolla, MO, United StatesReported employees: 201-500 | Rolla, MO, United States | 201-500 | Exact match | 437 contacts → |
“Brewer Science is a global technology leader in developing and manufacturing innovative materials, processes, and equipment for the reliable fabrication of cutting-edge…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Delta Designcohu.com HQ: Poway, CA, United StatesReported employees: 1,001-5,000 | Poway, CA, United States | 1,001-5,000 | Exact match | 293 contacts → |
“Cohu is a publicly traded (NASDAQ: COHU) global company with headquarters in Poway, CA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | R&d Altanovaadvantest.com HQ: South Plainfield, NJ, United StatesReported employees: 10001+ | South Plainfield, NJ, United States | 10001+ | Exact match | 280 contacts → |
“With the acquisition of R&D Altanova by Advantest, I am pleased I am now part of Advantest Interconnect Solutions (AIS).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Integra Technologies INCintegra-tech.com HQ: Wichita, KS, United StatesReported employees: 201-500 | Wichita, KS, United States | 201-500 | Exact match | 217 contacts → |
“Our mission: to deliver secure, reliable, state-of-the-art semiconductors and semiconductor services with unwavering integrity.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ulvac Technologies, INCulvac.com HQ: Methuen, MA, United StatesReported employees: 51-200 | Methuen, MA, United States | 51-200 | Exact match | 181 contacts → |
“ULVAC Technologies, Inc.(ISO 9001:2008) was established in 1992 as the US subsidiary of ULVAC, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Jireh Semiconductor INCaosmd.com HQ: Hillsboro, OR, United StatesReported employees: 501-1,000 | Hillsboro, OR, United States | 501-1,000 | Exact match | 167 contacts → |
“Jireh Semiconductor is the wafer fabrication facility of Alpha and Omega Semiconductor in Hillsboro, OR.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cascade Microtechformfactor.com HQ: Beaverton, OR, United StatesReported employees: 1,001-5,000 | Beaverton, OR, United States | 1,001-5,000 | Exact match | 151 contacts → |
“Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | ISE Labs ASEiselabs.com HQ: Fremont, CA, United StatesReported employees: 51-200 | Fremont, CA, United States | 51-200 | Exact match | 132 contacts → |
“ISE Labs is a one-stop semiconductor engineering service provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | LA Semiconductorlasemiconductor.com HQ: Pocatello, ID, United StatesReported employees: 201-500 | Pocatello, ID, United States | 201-500 | Exact match | 124 contacts → |
“LA Semiconductor is a US-owned semiconductor foundry located in Pocatello, Idaho, that specializes in the fabrication of Analog, Mixed Signal, and Power products.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Wisconsin Aluminum Foundrywafco.com HQ: Manitowoc, WI, United StatesReported employees: 501-1,000 | Manitowoc, WI, United States | 501-1,000 | Exact match | 112 contacts → |
“Established in 1909, Wisconsin Aluminum Foundry has consistently provided the finest quality aluminum and copper based alloy castings for a wide variety of industries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tokyo Electron America, INCtokyoelectron.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 107 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 247 company matches
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Fab foundries: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
247 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 247 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for fab foundries?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fab foundries did RevenueBase find based in the United States?
The saved snapshot records 247 matching company records, 53,133 tracked contacts and 20,958 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fab foundries by geography
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Cite this list
RevenueBase Data Team. Top 25 fab foundries based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/fab-foundries/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗