Company lists · Data refreshed November 2026
Top 25 Semiconductor assembly and test services worldwide
RevenueBase identified 1,053 company matches for semiconductor assembly and test services worldwide as of November 2026 and tracks 105,950 professional contacts across them, including 14,791 with verified work emails. The United States is the largest market and Bangalore the largest hub.
This list covers company matches for semiconductor assembly and test services worldwide, 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 November 6, 2026. Country and city lists for semiconductor assembly and test services follow the table.
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 semiconductor assembly and test services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 21,494 contacts → | ||||
Exact match “Established in 1987, TSMC is the world's first dedicated semiconductor foundry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 7,128 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 3,846 contacts → | ||||
Exact match “ASE (Advanced Semiconductor Engineering, Inc), a member of ASE Technology Holdings (NYSE:ASX) is one of the world's largest providers of outsourced semiconductor manufacturing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 2,997 contacts → | ||||
Exact match “Tessolve offers a unique combination of pre-silicon and post-silicon expertise to provide an efficient turnkey solution for silicon bring-up, and spec to the product.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 2,298 contacts → | ||||
Exact match “STATS ChipPAC is the world’s leading semiconductor back-end manufacturing and technology services provider, offering a full range of turnkey services that include semiconductor…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,971 contacts → | ||||
Exact match “Established in May 1984, Siliconware Precision Industries Co, Ltd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 1,853 contacts → | ||||
Exact match “Kulicke & Soffa is a global leader in semiconductor assembly technology, advancing device performance across automotive, compute, industrial, memory and communications markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 1,793 contacts → | ||||
Exact match “UTAC Group Holdings Ltd (“UTAC Group”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 1,639 contacts → | ||||
Exact match “FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 1,403 contacts → | ||||
Exact match “ASMPT is the leading global supplier of hardware and software solutions for semiconductor and electronics manufacturing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 1,291 contacts → | ||||
Exact match “Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 1,229 contacts → | ||||
Exact match “Innovation Begins with Us” Technoprobe is leading company in the field of semiconductors and microelectronics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 1,212 contacts → | ||||
Exact match “Carsem is a leading provider of turnkey packaging and test services to the semiconductor industry, and offers one of the largest package and test portfolios in the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 904 contacts → | ||||
Exact match “SSMC is a Joint Venture of NXP B.V.(NXP) and Taiwan Semiconductor Manufacturing Company Ltd (TSMC).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 830 contacts → | ||||
Exact match “Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 795 contacts → | ||||
Exact match “Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 758 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 755 contacts → | ||||
Exact match “King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 693 contacts → | ||||
Exact match “Taiwan's semiconductor industry not only possesses the core advantages of talent and technology, but also the most important thing is to build a complete industrial supply chain.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 681 contacts → | ||||
Exact match “AEM is a global leader in test innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 648 contacts → | ||||
Exact match “Caliber Interconnect is an ISO 9001 certified design house serving to product-based technology business activities that need design and engineering expertise on a flexible basis…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 603 contacts → | ||||
Exact match “WIN Semiconductors Corp.founded in October was the first pure-play 6-inch GaAs foundry in the world, has established two advanced GaAs wafer fabs in recognition of the growing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 578 contacts → | ||||
Exact match “GLOBAL UNICHIP CORP.(GUC) is a market leader in advanced ASIC (application-specific integrated circuit) services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 571 contacts → | ||||
Exact match “Chipbond was established in 1997 July 2nd and was booked on the Taiwan Stock Exchange starting from 2002 January 31st.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 563 contacts → | ||||
Exact match “TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded in the RevenueBase company graph · Nov 6, 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 “semiconductor assembly and test services”. 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 1,053 semiconductor assembly and test services worldwide
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Semiconductor assembly and test services worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for semiconductor assembly and test services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “semiconductor assembly and test services” 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. 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 14,791 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 November 6, 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.
Semiconductor assembly and test services by location
9 lists · largest firstEvery Semiconductor assembly and test services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Semiconductor assembly and test services based in the United States203
- Semiconductor assembly and test services based in China156
- Semiconductor assembly and test services based in India98
- Semiconductor assembly and test services based in Taiwan54
- Semiconductor assembly and test services based in Malaysia41
- Semiconductor assembly and test services based in Germany32
- Semiconductor assembly and test services based in Japan32
- Semiconductor assembly and test services based in the United Kingdom28
Cities
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 “semiconductor assembly and test services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many semiconductor assembly and test services are there worldwide?
RevenueBase identified 1,053 company matches for semiconductor assembly and test services worldwide as of November 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?
TSMC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most semiconductor assembly and test services?
The United States leads with 203 companies, followed by China (156) and India (98). Every semiconductor assembly and test services list by country and city is linked on this page.
Which city has the most semiconductor assembly and test services?
Bangalore leads with 32 company records, followed by Singapore (30) and Shenzhen (29).
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 14,791 professional contacts with verified work emails tracked across these 1,053 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,053 semiconductor assembly and test services worldwide. 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 semiconductor assembly and test services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,053 matching company records for semiconductor assembly and test services worldwide, with 105,950 tracked contacts and 14,791 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: November 6, 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 semiconductor assembly and test services worldwide
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 |  TSMCtsmc.comHQ: Hsinchu, TaiwanReported employees: 10001+ | Hsinchu, Taiwan | 10001+ | Exact match | 21,494 contacts → |
“Established in 1987, TSMC is the world's first dedicated semiconductor foundry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Amkor Technology, INCamkor.comHQ: Tempe, United StatesReported employees: 10001+ | Tempe, United States | 10001+ | Exact match | 7,128 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  ASE Globalaseglobal.comHQ: Kaohsiung, CA, TaiwanReported employees: 10001+ | Kaohsiung, CA, Taiwan | 10001+ | Exact match | 3,846 contacts → |
“ASE (Advanced Semiconductor Engineering, Inc), a member of ASE Technology Holdings (NYSE:ASX) is one of the world's largest providers of outsourced semiconductor manufacturing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Tessolvetessolve.comHQ: Bangalore, IndiaReported employees: 1,001-5,000 | Bangalore, India | 1,001-5,000 | Exact match | 2,997 contacts → |
“Tessolve offers a unique combination of pre-silicon and post-silicon expertise to provide an efficient turnkey solution for silicon bring-up, and spec to the product.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Stats Chippacstatschippac.comHQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 2,298 contacts → |
“STATS ChipPAC is the world’s leading semiconductor back-end manufacturing and technology services provider, offering a full range of turnkey services that include semiconductor…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Spil 矽品spil.com.twHQ: 台中市, TaiwanReported employees: 10001+ | 台中市, Taiwan | 10001+ | Exact match | 1,971 contacts → |
“Established in May 1984, Siliconware Precision Industries Co, Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kulicke & Soffakns.comHQ: Fort Washington, PA, SingaporeReported employees: 1,001-5,000 | Fort Washington, PA, Singapore | 1,001-5,000 | Exact match | 1,853 contacts → |
“Kulicke & Soffa is a global leader in semiconductor assembly technology, advancing device performance across automotive, compute, industrial, memory and communications markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  UTACutacgroup.comHQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 1,793 contacts → |
“UTAC Group Holdings Ltd (“UTAC Group”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Formfactor INCformfactor.comHQ: Livermore, CA, United StatesReported employees: 1,001-5,000 | Livermore, CA, United States | 1,001-5,000 | Exact match | 1,639 contacts → |
“FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Asmpt LTDasmpt.comHQ: Singapore, United KingdomReported employees: 10001+ | Singapore, United Kingdom | 10001+ | Exact match | 1,403 contacts → |
“ASMPT is the leading global supplier of hardware and software solutions for semiconductor and electronics manufacturing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Unisemunisemgroup.comHQ: Kuala Lumpur, CA, MalaysiaReported employees: 5,001-10,000 | Kuala Lumpur, CA, Malaysia | 5,001-10,000 | Exact match | 1,291 contacts → |
“Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Technoprobetechnoprobe.comHQ: Cernusco Lombardone, ItalyReported employees: 1,001-5,000 | Cernusco Lombardone, Italy | 1,001-5,000 | Exact match | 1,229 contacts → |
“Innovation Begins with Us” Technoprobe is leading company in the field of semiconductors and microelectronics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Carsemcarsem.comHQ: Ipoh, MalaysiaReported employees: 5,001-10,000 | Ipoh, Malaysia | 5,001-10,000 | Exact match | 1,212 contacts → |
“Carsem is a leading provider of turnkey packaging and test services to the semiconductor industry, and offers one of the largest package and test portfolios in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 904 contacts → |
“SSMC is a Joint Venture of NXP B.V.(NXP) and Taiwan Semiconductor Manufacturing Company Ltd (TSMC).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Cohu, INCcohu.comHQ: San Diego, CA, United StatesReported employees: 1,001-5,000 | San Diego, CA, United States | 1,001-5,000 | Exact match | 830 contacts → |
“Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  SPEAspea.comHQ: Volpiano, ItalyReported employees: 501-1,000 | Volpiano, Italy | 501-1,000 | Exact match | 795 contacts → |
“Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Skywater Technologyskywatertechnology.comHQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 758 contacts → |
“SkyWater (NASDAQ: SKYT) is a U.S-based semiconductor manufacturer and a DMEA-accredited Category 1A Trusted Supplier.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  KYECkyec.com.twHQ: Chu-nan, ChinaReported employees: 5,001-10,000 | Chu-nan, China | 5,001-10,000 | Exact match | 755 contacts → |
“King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Kinsus Interconnect Technology Corpkinsus.com.twHQ: 桃園市, TaiwanReported employees: 1,001-5,000 | 桃園市, Taiwan | 1,001-5,000 | Exact match | 693 contacts → |
“Taiwan's semiconductor industry not only possesses the core advantages of talent and technology, but also the most important thing is to build a complete industrial supply chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  AEMaem.com.sgHQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 681 contacts → |
“AEM is a global leader in test innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Caliber Interconnectscaliberinterconnect.comHQ: Coimbatore, IndiaReported employees: 501-1,000 | Coimbatore, India | 501-1,000 | Exact match | 648 contacts → |
“Caliber Interconnect is an ISO 9001 certified design house serving to product-based technology business activities that need design and engineering expertise on a flexible basis…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  WIN Semiconductors Corp. 穩懋半導體股份有限公司winfoundry.comHQ: Taoyuan, United StatesReported employees: 1,001-5,000 | Taoyuan, United States | 1,001-5,000 | Exact match | 603 contacts → |
“WIN Semiconductors Corp.founded in October was the first pure-play 6-inch GaAs foundry in the world, has established two advanced GaAs wafer fabs in recognition of the growing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  GUCguc-asic.comHQ: Hsinchu Science Park, TaiwanReported employees: 501-1,000 | Hsinchu Science Park, Taiwan | 501-1,000 | Exact match | 578 contacts → |
“GLOBAL UNICHIP CORP.(GUC) is a market leader in advanced ASIC (application-specific integrated circuit) services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Chipbond Technology Corporationchipbond.com.twHQ: 新竹市東區科學園區, TaiwanReported employees: 5,001-10,000 | 新竹市東區科學園區, Taiwan | 5,001-10,000 | Exact match | 571 contacts → |
“Chipbond was established in 1997 July 2nd and was booked on the Taiwan Stock Exchange starting from 2002 January 31st.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Tsmc Washingtonwafertech.comHQ: Camas, WA, United StatesReported employees: 501-1,000 | Camas, WA, United States | 501-1,000 | Exact match | 563 contacts → |
“TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,053 company matches
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Semiconductor assembly and test services: dataset insights
November 6, 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
1,040 records in the displayed employee bands.
13 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,053 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: November 6, 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 ↗
Semiconductor assembly and test services by location
9 lists · largest firstEvery Semiconductor assembly and test services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Semiconductor assembly and test services based in the United States203
- Semiconductor assembly and test services based in China156
- Semiconductor assembly and test services based in India98
- Semiconductor assembly and test services based in Taiwan54
- Semiconductor assembly and test services based in Malaysia41
- Semiconductor assembly and test services based in Germany32
- Semiconductor assembly and test services based in Japan32
- Semiconductor assembly and test services based in the United Kingdom28
Cities
Questions about this company list
What does Exact match mean for semiconductor assembly and test services?
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 semiconductor assembly and test services did RevenueBase find worldwide?
The saved snapshot records 1,053 matching company records, 105,950 tracked contacts and 14,791 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 semiconductor assembly and test services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/semiconductor-assembly-and-test-services.
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 semiconductor assembly and test services worldwide
RevenueBase records 1,053 matching company records for semiconductor assembly and test services worldwide, with 105,950 tracked contacts and 14,791 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: November 6, 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 semiconductor assembly and test services worldwide
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 | TSMCtsmc.com HQ: Hsinchu, TaiwanReported employees: 10001+ | Hsinchu, Taiwan | 10001+ | Exact match | 21,494 contacts → |
“Established in 1987, TSMC is the world's first dedicated semiconductor foundry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Amkor Technology, INCamkor.com HQ: Tempe, United StatesReported employees: 10001+ | Tempe, United States | 10001+ | Exact match | 7,128 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | ASE Globalaseglobal.com HQ: Kaohsiung, CA, TaiwanReported employees: 10001+ | Kaohsiung, CA, Taiwan | 10001+ | Exact match | 3,846 contacts → |
“ASE (Advanced Semiconductor Engineering, Inc), a member of ASE Technology Holdings (NYSE:ASX) is one of the world's largest providers of outsourced semiconductor manufacturing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Tessolvetessolve.com HQ: Bangalore, IndiaReported employees: 1,001-5,000 | Bangalore, India | 1,001-5,000 | Exact match | 2,997 contacts → |
“Tessolve offers a unique combination of pre-silicon and post-silicon expertise to provide an efficient turnkey solution for silicon bring-up, and spec to the product.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Stats Chippacstatschippac.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 2,298 contacts → |
“STATS ChipPAC is the world’s leading semiconductor back-end manufacturing and technology services provider, offering a full range of turnkey services that include semiconductor…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Spil 矽品spil.com.tw HQ: 台中市, TaiwanReported employees: 10001+ | 台中市, Taiwan | 10001+ | Exact match | 1,971 contacts → |
“Established in May 1984, Siliconware Precision Industries Co, Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kulicke & Soffakns.com HQ: Fort Washington, PA, SingaporeReported employees: 1,001-5,000 | Fort Washington, PA, Singapore | 1,001-5,000 | Exact match | 1,853 contacts → |
“Kulicke & Soffa is a global leader in semiconductor assembly technology, advancing device performance across automotive, compute, industrial, memory and communications markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | UTACutacgroup.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 1,793 contacts → |
“UTAC Group Holdings Ltd (“UTAC Group”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Formfactor INCformfactor.com HQ: Livermore, CA, United StatesReported employees: 1,001-5,000 | Livermore, CA, United States | 1,001-5,000 | Exact match | 1,639 contacts → |
“FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Asmpt LTDasmpt.com HQ: Singapore, United KingdomReported employees: 10001+ | Singapore, United Kingdom | 10001+ | Exact match | 1,403 contacts → |
“ASMPT is the leading global supplier of hardware and software solutions for semiconductor and electronics manufacturing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Unisemunisemgroup.com HQ: Kuala Lumpur, CA, MalaysiaReported employees: 5,001-10,000 | Kuala Lumpur, CA, Malaysia | 5,001-10,000 | Exact match | 1,291 contacts → |
“Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Technoprobetechnoprobe.com HQ: Cernusco Lombardone, ItalyReported employees: 1,001-5,000 | Cernusco Lombardone, Italy | 1,001-5,000 | Exact match | 1,229 contacts → |
“Innovation Begins with Us” Technoprobe is leading company in the field of semiconductors and microelectronics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Carsemcarsem.com HQ: Ipoh, MalaysiaReported employees: 5,001-10,000 | Ipoh, Malaysia | 5,001-10,000 | Exact match | 1,212 contacts → |
“Carsem is a leading provider of turnkey packaging and test services to the semiconductor industry, and offers one of the largest package and test portfolios in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 904 contacts → |
“SSMC is a Joint Venture of NXP B.V.(NXP) and Taiwan Semiconductor Manufacturing Company Ltd (TSMC).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Cohu, INCcohu.com HQ: San Diego, CA, United StatesReported employees: 1,001-5,000 | San Diego, CA, United States | 1,001-5,000 | Exact match | 830 contacts → |
“Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | SPEAspea.com HQ: Volpiano, ItalyReported employees: 501-1,000 | Volpiano, Italy | 501-1,000 | Exact match | 795 contacts → |
“Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Skywater Technologyskywatertechnology.com HQ: Bloomington, MN, United StatesReported employees: 501-1,000 | Bloomington, MN, United States | 501-1,000 | Exact match | 758 contacts → |
“SkyWater (NASDAQ: SKYT) is a U.S-based semiconductor manufacturer and a DMEA-accredited Category 1A Trusted Supplier.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | KYECkyec.com.tw HQ: Chu-nan, ChinaReported employees: 5,001-10,000 | Chu-nan, China | 5,001-10,000 | Exact match | 755 contacts → |
“King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Kinsus Interconnect Technology Corpkinsus.com.tw HQ: 桃園市, TaiwanReported employees: 1,001-5,000 | 桃園市, Taiwan | 1,001-5,000 | Exact match | 693 contacts → |
“Taiwan's semiconductor industry not only possesses the core advantages of talent and technology, but also the most important thing is to build a complete industrial supply chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | AEMaem.com.sg HQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 681 contacts → |
“AEM is a global leader in test innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Caliber Interconnectscaliberinterconnect.com HQ: Coimbatore, IndiaReported employees: 501-1,000 | Coimbatore, India | 501-1,000 | Exact match | 648 contacts → |
“Caliber Interconnect is an ISO 9001 certified design house serving to product-based technology business activities that need design and engineering expertise on a flexible basis…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | WIN Semiconductors Corp. 穩懋半導體股份有限公司winfoundry.com HQ: Taoyuan, United StatesReported employees: 1,001-5,000 | Taoyuan, United States | 1,001-5,000 | Exact match | 603 contacts → |
“WIN Semiconductors Corp.founded in October was the first pure-play 6-inch GaAs foundry in the world, has established two advanced GaAs wafer fabs in recognition of the growing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | GUCguc-asic.com HQ: Hsinchu Science Park, TaiwanReported employees: 501-1,000 | Hsinchu Science Park, Taiwan | 501-1,000 | Exact match | 578 contacts → |
“GLOBAL UNICHIP CORP.(GUC) is a market leader in advanced ASIC (application-specific integrated circuit) services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Chipbond Technology Corporationchipbond.com.tw HQ: 新竹市東區科學園區, TaiwanReported employees: 5,001-10,000 | 新竹市東區科學園區, Taiwan | 5,001-10,000 | Exact match | 571 contacts → |
“Chipbond was established in 1997 July 2nd and was booked on the Taiwan Stock Exchange starting from 2002 January 31st.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tsmc Washingtonwafertech.com HQ: Camas, WA, United StatesReported employees: 501-1,000 | Camas, WA, United States | 501-1,000 | Exact match | 563 contacts → |
“TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,053 company matches
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Semiconductor assembly and test services: dataset insights
November 6, 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
1,040 records in the displayed employee bands.
13 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,053 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: November 6, 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 ↗
Semiconductor assembly and test services by location
9 lists · largest firstEvery Semiconductor assembly and test services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Semiconductor assembly and test services based in the United States203
- Semiconductor assembly and test services based in China156
- Semiconductor assembly and test services based in India98
- Semiconductor assembly and test services based in Taiwan54
- Semiconductor assembly and test services based in Malaysia41
- Semiconductor assembly and test services based in Germany32
- Semiconductor assembly and test services based in Japan32
- Semiconductor assembly and test services based in the United Kingdom28
Cities
Questions about this company list
What does Exact match mean for semiconductor assembly and test services?
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 semiconductor assembly and test services did RevenueBase find worldwide?
The saved snapshot records 1,053 matching company records, 105,950 tracked contacts and 14,791 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: November 6, 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
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Cite this list
RevenueBase Data Team. Top 25 semiconductor assembly and test services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/semiconductor-assembly-and-test-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗