Company lists · Data refreshed September 2026
Top 25 Chip packaging and assembly services worldwide
RevenueBase identified 368 chip packaging and assembly services worldwide as of September 2026 and tracks 39,230 professional contacts across them, including 3,869 with verified work emails and 0 with mobile numbers. The United States is the largest market and San Jose the largest hub.
This list covers chip packaging and assembly services 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 assembly services 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 assembly services 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 | 1,109 contacts → | ||||
Partial evidence “Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,071 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 656 contacts → | ||||
Partial 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. | |||||
| 8 | 652 contacts → | ||||
Indirect evidence “A Success Enabler ASE Electronics (M) Sdn.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 629 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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. | |||||
| 11 | 532 contacts → | ||||
Indirect evidence “GLOBAL UNICHIP CORP.(GUC) is a market leader in advanced ASIC (application-specific integrated circuit) services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 517 contacts → | ||||
Partial evidence “PCB Technologies is an All-in-One Solutions provider of high-mix multilayer rigid, rigid-flex and multi-flex PCBs, Substrates, IC Packaging, complex electronic component…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | 428 contacts → | ||||
Indirect evidence “Sierra Circuits has been faithfully serving PCB designers and engineers since 1986, and has worked with over customers since then.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 415 contacts → | ||||
Indirect evidence “Part of the SAM Group, SAM Meerkat offers a comprehensive portfolio of contract manufacturing and integration services for the global semiconductor and solar equipment industries.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 389 contacts → | ||||
Partial evidence “ARF Design has been a pioneer in providing comprehensive end-to-end chip design services to the global semiconductor industry.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 354 contacts → | ||||
Indirect evidence “Modern Industries, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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. | |||||
| 20 | 284 contacts → | ||||
Indirect evidence “Tong Hsing Electronic Industries Limited is a world leader in micro module foundry services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 277 contacts → | ||||
Strong 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. | |||||
| 22 | 231 contacts → | ||||
Partial evidence “i3 Assembly LLC is dedicated to advancing our competitive excellence from development through full-scale production manufacturing.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 204 contacts → | ||||
Indirect evidence “Rohde & Schwarz GmbH & Co.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 181 contacts → | ||||
Indirect evidence “Deca was born of a passion to transform the way the world builds advanced electronic devices.” 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 assembly services. 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 assembly services.
- Partial evidence
- Its own public description names part of chip packaging and assembly services, 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 assembly services. 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 368 chip packaging and assembly services worldwide
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Chip packaging and assembly services 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 assembly services, 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
- 6 countries, largest first: the United States, India, Taiwan, the United Kingdom, Germany, Malaysia. Country and city lists for chip packaging and assembly services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “chip packaging and assembly services”. 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 assembly services), 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 assembly services, 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, 3,869 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 assembly services by location
6 lists · largest firstEvery Chip packaging and assembly services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Chip packaging and assembly services based in the United States171
- Chip packaging and assembly services based in India62
- Chip packaging and assembly services based in Taiwan36
- Chip packaging and assembly services based in the United Kingdom36
- Chip packaging and assembly services based in Germany32
- Chip packaging and assembly services based in Malaysia31
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 assembly services, 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 assembly services are there worldwide?
RevenueBase identified 368 chip packaging and assembly services 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 assembly services?
The United States leads with 171 companies, followed by India (62) and Taiwan (36). Every chip packaging and assembly services list by country and city is linked on this page.
Which city has the most chip packaging and assembly services?
San Jose leads with 11 headquartered companies, followed by Bangalore (10) and Hyderabad (9).
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 3,869 verified decision-maker contacts tracked across these 368 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.