Company lists · Data refreshed September 2026
Top 25 Chip packaging and testing worldwide
RevenueBase identified 105 chip packaging and testing worldwide as of September 2026 and tracks 19,830 professional contacts across them, including 3,070 with verified work emails and 0 with mobile numbers. The United States is the largest market and Tempe the largest hub.
This list covers chip packaging and testing worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for chip packaging and testing follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest chip packaging and testing worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,435 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,293 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,601 contacts → | ||||
Indirect evidence “About USI (SSE: 601231) USI, Universal Scientific Industrial (Shanghai) Co, Ltd, is a global leader in electronic design and manufacturing as well as a leader in the field of SiP…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,200 contacts → | ||||
Indirect evidence “Established in May 1984, Siliconware Precision Industries Co, Ltd.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 656 contacts → | ||||
Indirect evidence “King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 591 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 510 contacts → | ||||
Indirect evidence “TSMC Washington is an integrated circuit (IC) semiconductor foundry in the United States.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 496 contacts → | ||||
Indirect evidence “Chipbond was established in 1997 July 2nd and was booked on the Taiwan Stock Exchange starting from 2002 January 31st.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 479 contacts → | ||||
Indirect evidence “Micross is the most complete provider of advanced microelectronic services and component, die and wafer solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 348 contacts → | ||||
Indirect evidence “History OSE was established with capital from Dr.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 293 contacts → | ||||
Indirect evidence “Cohu is a publicly traded (NASDAQ: COHU) global company with headquarters in Poway, CA.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 280 contacts → | ||||
Indirect evidence “With the acquisition of R&D Altanova by Advantest, I am pleased I am now part of Advantest Interconnect Solutions (AIS).” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 277 contacts → | ||||
Partial evidence “1988(OSAT, Outsourced Semiconductor Assembly and Test Services)30 WLCSP)(Bump)(Flip Chip)(Window BGA wBGA)IC 200345388 115,1006(OSAT Group)202112 2023 2023RBA 2023- 2023TTQS 2023…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 262 contacts → | ||||
Indirect evidence “19978ICICIC back-end serviceIC 5C; ISO 9002 QS 4.5CNLA” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 217 contacts → | ||||
Indirect evidence “Our mission: to deliver secure, reliable, state-of-the-art semiconductors and semiconductor services with unwavering integrity.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 151 contacts → | ||||
Indirect evidence “Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 135 contacts → | ||||
Partial evidence “Semiconductor assembly and testing subcontractor.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 134 contacts → | ||||
Partial evidence “Founded in 1958, Trio-Tech International (NYSE MKT: TRT) is a leading provider of semiconductor testing services, manufacturing solutions, and value-added distribution services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 132 contacts → | ||||
Indirect evidence “ISE Labs is a one-stop semiconductor engineering service provider.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 103 contacts → | ||||
Partial evidence “TPW (TeraPower Technology Inc.) is a chip probing company established in Sep.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 98 contacts → | ||||
Partial evidence “The Semiconductor Components Group provides custom and off-the-shelf packaging options in ceramic and organic material sets.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 96 contacts → | ||||
Indirect evidence “STAr is the acronym for "Semiconductor Test Architects" and as in the name - we are the architects with leading technologies for semiconductor test solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 89 contacts → | ||||
Partial evidence “Your Wafer Bumping and Testing Partner in Taiwan Finding the right test solution to meet your needs is essential in today's competitive market.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 66 contacts → | ||||
Strong evidence “NHanced Semiconductors is pioneering the future of advanced chip packaging.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 contacts → | ||||
Indirect evidence “ElevATE is a leading supplier of innovative, low power, high density components for the design of next generation Automated Test Equipment (ATE).” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: chip packaging and testing. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names chip packaging and testing.
- Partial evidence
- Its own public description names part of chip packaging and testing, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name chip packaging and testing. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 105 chip packaging and testing worldwide
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Chip packaging and testing worldwide at a glance
As of Sep 16, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among chip packaging and testing, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 2 countries, largest first: the United States, Taiwan. Country and city lists for chip packaging and testing are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “chip packaging and testing”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names chip packaging and testing), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among chip packaging and testing, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 3,070 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Chip packaging and testing by location
2 lists · largest firstEvery Chip packaging and testing list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names chip packaging and testing, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many chip packaging and testing are there worldwide?
RevenueBase identified 105 chip packaging and testing worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Amkor Technology, INC, headquartered in Tempe, tops this list with the largest team on record.
Which country has the most chip packaging and testing?
The United States leads with 76 companies, followed by Taiwan (29). Every chip packaging and testing list by country and city is linked on this page.
Which city has the most chip packaging and testing?
Tempe leads with 4 headquartered companies, followed by Kaohsiung (3) and Austin (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,070 verified decision-maker contacts tracked across these 105 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.