Company lists · Data refreshed September 2026

Top 25 Electronic component testing services based in the United States

Name: Electronic component testing 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 19, 2026 374 companies tracked

RevenueBase identified 374 electronic component testing services headquartered in the United States as of September 2026 and tracks 35,317 professional contacts across them, including 13,143 with verified work emails. San Jose is the largest hub.

This list covers electronic component testing 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 19, 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 19, 2026 86% judged on-target in blind review

374Companies

35,317Contacts tracked

13,143Verified emails

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The 25 largest electronic component testing services based in the United States

Ranked by team size

Top 25 of 374 electronic component testing services based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electronic component testing 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	UL Solutions	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 19, 2026	10001+	12,316 contacts →
	Indirect evidence “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Source: RevenueBase Database · checked Sep 19, 2026
2	NI National Instruments	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	7,081 contacts →
	Indirect evidence “In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Source: RevenueBase Database · checked Sep 19, 2026
3	Teradyne	Indirect evidence	North Reading, MA, United StatesHQ checked Sep 19, 2026	5,001-10,000	4,720 contacts →
	Indirect evidence “Teradyne brings high-quality innovations such as smart devices, life-saving medical equipment and data storage systems to market, faster.” Source: RevenueBase Database · checked Sep 19, 2026
4	Stratosphere Quality	Indirect evidence	Fishers, IN, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Source: RevenueBase Database · checked Sep 19, 2026
5	Applied Technical Services, LLC	Partial evidence	Marietta, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	890 contacts →
	Partial evidence “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Source: RevenueBase Database · checked Sep 19, 2026
6	TÜV Rheinland North America	Partial evidence	Boxborough, MA, United StatesHQ checked Sep 19, 2026	501-1,000	712 contacts →
	Partial evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 19, 2026
7	Vayan Group, LLC	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	476 contacts →
	Partial evidence “Vayan Group, LLC is a leading provider of technology-driven quality assurance solutions for OEMs, Tier 1 and Tier 2 suppliers across the automotive, aerospace, electronics…” Source: RevenueBase Database · checked Sep 19, 2026
8	FST Technical Services	Partial evidence	Chandler, AZ, United StatesHQ checked Sep 19, 2026	201-500	381 contacts →
	Partial evidence “Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Source: RevenueBase Database · checked Sep 19, 2026
9	Quality Professionals Q-Pros	Partial evidence	TX, United StatesHQ checked Sep 19, 2026	501-1,000	347 contacts →
	Partial evidence “Quality Professionals (Q-Pros) is a global independent software Quality Assurance and Testing services provider supporting enterprise and government organizations.” Source: RevenueBase Database · checked Sep 19, 2026
10	Smithers	Partial evidence	Akron, OH, United StatesHQ checked Sep 19, 2026	501-1,000	310 contacts →
	Partial evidence “Founded in 1925 and headquartered in Akron, Ohio, Smithers is a multinational provider of testing, consulting, information, and certification services.” Source: RevenueBase Database · checked Sep 19, 2026
11	Intertek Building & Construction	Indirect evidence	Arlington Heights, IL, United StatesHQ checked Sep 19, 2026	10001+	241 contacts →
	Indirect evidence “Market Access.” Source: RevenueBase Database · checked Sep 19, 2026
12	MGA Research Corporation	Partial evidence	Akron, NY, United StatesHQ checked Sep 19, 2026	201-500	224 contacts →
	Partial evidence “MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Source: RevenueBase Database · checked Sep 19, 2026
13	PRO QC International	Indirect evidence	Mchenry, IL, United StatesHQ checked Sep 19, 2026	501-1,000	211 contacts →
	Indirect evidence “Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Source: RevenueBase Database · checked Sep 19, 2026
14	PRI Performance Review Institute	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 19, 2026	51-200	200 contacts →
	Indirect evidence “Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…” Source: RevenueBase Database · checked Sep 19, 2026
15	Eurofins Electrical & Electronics North America	Strong evidence	Baltimore, MD, United StatesHQ checked Sep 19, 2026	201-500	180 contacts →
	Strong evidence “Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…” Source: RevenueBase Database · checked Sep 19, 2026
16	Qualitylogic	Indirect evidence	Boise, ID, United StatesHQ checked Sep 19, 2026	51-200	157 contacts →
	Indirect evidence “QualityLogic delivers full spectrum QA products and services to technology companies in rapidly evolving markets, or where transformative technologies are changing the world.” Source: RevenueBase Database · checked Sep 19, 2026
17	Trialon Corporation	Indirect evidence	Burton, MI, United StatesHQ checked Sep 19, 2026	501-1,000	154 contacts →
	Indirect evidence “Trialon is now Element!” Source: RevenueBase Database · checked Sep 19, 2026
18	Trio-Tech International	Partial evidence	Van Nuys, CA, United StatesHQ checked Sep 19, 2026	501-1,000	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 19, 2026
19	Aeis LLC	Partial evidence	South Plainfield, NJ, United StatesHQ checked Sep 19, 2026	201-500	116 contacts →
	Partial evidence “AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
20	Certerra	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 19, 2026	1,001-5,000	114 contacts →
	Partial evidence “Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Source: RevenueBase Database · checked Sep 19, 2026
21	Dit-Mco International	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 19, 2026	51-200	102 contacts →
	Partial evidence “DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Source: RevenueBase Database · checked Sep 19, 2026
22	Elite Electronic Engineering, INC	Partial evidence	Downers Grove, IL, United StatesHQ checked Sep 19, 2026	51-200	95 contacts →
	Partial evidence “Founded in 1954, Elite Electronic Engineering, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
23	Johnstech International	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Indirect evidence “Founded in 1991, Johnstech offers test contactors and related services with the highest electrical and mechanical performance on the market, ensuring global semiconductor…” Source: RevenueBase Database · checked Sep 19, 2026
24	Aero Instruments & Avionics, INC	Strong evidence	Depew, NY, United StatesHQ checked Sep 19, 2026	51-200	90 contacts →
	Strong evidence “Aero Instruments & Avionics, Inc, provides testing, repair and overhaul of avionic components used in commercial, regional and military aircraft.” Source: RevenueBase Database · checked Sep 19, 2026
25	Trustedqa, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	51-200	90 contacts →
	Indirect evidence “Since 1988, TrustedQA’s mission has been to help our customers build and deliver quality software more efficiently, effectively, and securely.” Source: RevenueBase Database · checked Sep 19, 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: electronic component testing 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 electronic component testing services.
Partial evidence: Its own public description names part of electronic component testing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electronic component testing 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 374 electronic component testing services based in the United States

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Electronic component testing services based in the United States at a glance

As of Sep 19, 2026

37.2%Verified-email coverage

94.4Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · San Jose

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

126

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 374 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 electronic component testing 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 “electronic component testing 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 electronic component testing 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 electronic component testing 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, 13,143 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 19, 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.

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 electronic component testing 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 electronic component testing services are there based in the United States?

RevenueBase identified 374 electronic component testing 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?

UL Solutions, headquartered in Northbrook, tops this list with the largest team on record.

Which city has the most electronic component testing services?

San Jose leads with 11 headquartered companies, followed by Houston (8) and San Diego (7).

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 13,143 verified decision-maker contacts tracked across these 374 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 19, 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.