Company lists · Data refreshed September 2026

Top 25 Electronics prototyping services based in the United States

Name: Electronics prototyping services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 603 companies tracked

RevenueBase identified 603 electronics prototyping services headquartered in the United States as of September 2026 and tracks 6,455 professional contacts across them, including 1,663 with verified work emails. San Jose is the largest hub.

This list covers electronics prototyping services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

603Companies

6,455Contacts tracked

1,663Verified emails

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The 25 largest electronics prototyping services based in the United States

Ranked by team size

Top 25 of 603 electronics prototyping services based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to electronics prototyping services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Pactron INC	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 16, 2026	201-500	247 contacts →
	Partial evidence “Pactron is a preeminent provider of Electronics Design & Manufacturing Services, supporting clients across a broad range of industry segments, from semiconductor to networking…” Source: RevenueBase Database · checked Sep 16, 2026
2	Milwaukee Electronics	Partial evidence	Glendale, WI, United StatesHQ checked Sep 16, 2026	501-1,000	221 contacts →
	Partial evidence “Milwaukee Electronics is an American electronics manufacturing services (EMS) provider based in the U.S, Mexico and Asia.” Source: RevenueBase Database · checked Sep 16, 2026
3	Advanced Circuits	Indirect evidence	Aurora, CO, United StatesHQ checked Sep 16, 2026	201-500	170 contacts →
	Indirect evidence “Since 1989, Advanced Circuits has been leading the PCB industry in Quality and Innovation for prototype through large scale production manufacturing and now provides full assembly…” Source: RevenueBase Database · checked Sep 16, 2026
4	American Computer Development, Inc. Acdi In Touch With Technology	Partial evidence	Frederick, MD, United StatesHQ checked Sep 16, 2026	51-200	136 contacts →
	Partial evidence “Based in Frederick, MD, Nashville, NC, and Branford, CT, ACDi is an integral resource to companies who need a trusted partner for dynamic electronics manufacturing, engineering…” Source: RevenueBase Database · checked Sep 16, 2026
5	Aqs, INC	Partial evidence	Fremont, CA, United StatesHQ checked Sep 16, 2026	501-1,000	130 contacts →
	Partial evidence “Your hassle-free end-to-end electronic manufacturing solutions.” Source: RevenueBase Database · checked Sep 16, 2026
6	Gorilla Circuits	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	128 contacts →
	Indirect evidence “Gorilla Circuits is a Silicon Valley full service printed circuit board manufacturer providing industry leading technology in PCB Design, Fabrication, and Assembly.” Source: RevenueBase Database · checked Sep 16, 2026
7	Krypton Solutions	Indirect evidence	Plano, TX, United StatesHQ checked Sep 16, 2026	201-500	123 contacts →
	Indirect evidence “Krypton Solutions provides high speed, precision printed circuit board assembly within our locations in Plano, TX, San Jose, CA, and Bangalore, India.” Source: RevenueBase Database · checked Sep 16, 2026
8	3-Dimensional Services Group	Indirect evidence	Rochester Hills, MI, United StatesHQ checked Sep 16, 2026	501-1,000	109 contacts →
	Indirect evidence “The 3-Dimensional Services Group specializes in manufacturing metal and plastic prototype and low-volume production parts and assemblies.” Source: RevenueBase Database · checked Sep 16, 2026
9	Ansen Corporation	Partial evidence	Ogdensburg, NY, United StatesHQ checked Sep 16, 2026	201-500	102 contacts →
	Partial evidence “Ansen Corporation is an ISO 9001:2008 and ISO 13485:2003 certified Electronics Manufacturing Services provider.” Source: RevenueBase Database · checked Sep 16, 2026
10	Infiniti Solutions	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	101 contacts →
	Partial evidence “FULL EMS SERVICES We provide full professional EMS (Electronic Contract Manufacturing) Services.” Source: RevenueBase Database · checked Sep 16, 2026
11	Valley Services Electronics VSE	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	51-200	91 contacts →
	Partial evidence “Valley Services Electronics (VSE) provides high-quality electronic manufacturing services for companies building complex, reliable products.” Source: RevenueBase Database · checked Sep 16, 2026
12	Qmax Systems INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	11-50	88 contacts →
	Partial evidence “Qmax Systems has been a trusted partner for companies that need to bring complex electronic products to life, from concept to production-ready hardware.” Source: RevenueBase Database · checked Sep 16, 2026
13	Aimtron Corporation	Partial evidence	Palatine, IL, United StatesHQ checked Sep 16, 2026	201-500	80 contacts →
	Partial evidence “Aimtron Corporation specializes in the Electronic Manufacturing Services since 2009.” Source: RevenueBase Database · checked Sep 16, 2026
14	Prime Technological Services	Indirect evidence	Suwanee, GA, United StatesHQ checked Sep 16, 2026	201-500	75 contacts →
	Indirect evidence “At Prime EMS, we are committed to servicing you and your company’s requirements to the highest level.” Source: RevenueBase Database · checked Sep 16, 2026
15	ASC Sunstone Circuits	Partial evidence	Mulino, OR, United StatesHQ checked Sep 16, 2026	51-200	73 contacts →
	Partial evidence “Sunstone Circuits® is the established leader in providing innovative and reliable printed circuit board (PCB) solutions for the electronic design industry.” Source: RevenueBase Database · checked Sep 16, 2026
16	Green Circuits	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	61 contacts →
	Partial evidence “Green Circuits is a full-service Electronics Manufacturing Services (EMS) partner to leading OEM’s.” Source: RevenueBase Database · checked Sep 16, 2026
17	Precision Assembly	Indirect evidence	American Fork, UT, United StatesHQ checked Sep 16, 2026	51-200	61 contacts →
	Indirect evidence “Precision Assembly, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
18	Sunburst EMS	Partial evidence	West Bridgewater, MA, United StatesHQ checked Sep 16, 2026	51-200	60 contacts →
	Partial evidence “Sunburst EMS is a flexible, full-service provider of a full range of electronic manufacturing services.” Source: RevenueBase Database · checked Sep 16, 2026
19	Circuithub	Indirect evidence	South Deerfield, MA, United StatesHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “On-demand manufacturing from 1 to units.” Source: RevenueBase Database · checked Sep 16, 2026
20	Murrietta Circuits	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 16, 2026	51-200	54 contacts →
	Partial evidence “Murrietta Circuits is a high reliability, turnkey supplier of PCB Electronic Manufacturing Services.” Source: RevenueBase Database · checked Sep 16, 2026
21	K & F Electronics	Partial evidence	Fraser, MI, United StatesHQ checked Sep 16, 2026	11-50	54 contacts →
	Partial evidence “K&F Electronics provides pcb design, pcb fabrication, pcb assembly and full box build services.” Source: RevenueBase Database · checked Sep 16, 2026
22	Bema Electronics INC	Partial evidence	Fremont, CA, United StatesHQ checked Sep 16, 2026	51-200	52 contacts →
	Partial evidence “Bema Electronics is a premier provider of electronics manufacturing services offering our customers the most advanced techniques in surface mount technology, ball-grid array…” Source: RevenueBase Database · checked Sep 16, 2026
23	Adco Circuits	Indirect evidence	Rochester Hills, MI, United StatesHQ checked Sep 16, 2026	51-200	52 contacts →
	Indirect evidence “ADCO Circuits, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
24	Freedomcad	Partial evidence	Bedford, NH, United StatesHQ checked Sep 16, 2026	51-200	50 contacts →
	Partial evidence “FREEDOMCAD is a multi-disciplined engineering team specializing in PCB Design, Engineering, and Manufacturing services for complex high-speed and large electronic systems for the…” Source: RevenueBase Database · checked Sep 16, 2026
25	Tecnova Electronics	Partial evidence	Waukegan, IL, United StatesHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “Discover excellence in electronic contract manufacturing and engineering with Tecnova.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: electronics prototyping 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 electronics prototyping services.
Partial evidence: Its own public description names part of electronics prototyping services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electronics prototyping 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 603 electronics prototyping services based in the United States

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Electronics prototyping services based in the United States at a glance

As of Sep 16, 2026

25.8%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · San Jose

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

322

11-50

173

51-200

201-500

501-1,000

1,001-5,000

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 603 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among electronics prototyping 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “electronics prototyping 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 electronics prototyping 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 electronics prototyping services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,663 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.

Electronics prototyping services by metro

Electronics prototyping services in San Jose31

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 electronics prototyping 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 electronics prototyping services are there based in the United States?

RevenueBase identified 603 electronics prototyping services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Pactron INC, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most electronics prototyping services?

San Jose leads with 31 headquartered companies, followed by Fremont (11) and San Diego (10).

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 1,663 verified decision-maker contacts tracked across these 603 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.