What Circuit Check does

Circuit Check, Inc. is a US-based designer and manufacturer of automated test equipment (ATE) and test fixtures for electronics manufacturing, founded in 1979/1980 and headquartered in Maple Grove, Minnesota. The company builds modular ATE platforms across a tiered product line (300 Series Benchtop, 600 Series Compact, 800 Series, and 1000 Series flagship) plus the 5000 Series In-line Handler and 6000 Series Rotary Handler for high-throughput applications. Underlying technology is built on PXI/VXI modular instrumentation with in-house fixture design, fabrication, and verification, supported by proprietary offerings such as Tight Proximity Probing Technology, the Vortex Series vacuum box, CCITest software, FEA/strain gauge analysis, and a patented Side Access Unit with Self-Aligning Design. The ICT fixture portfolio includes high node count fixtures supporting 10,000+ probes and integrates with Keysight i3070, NI PXI platforms, and Pickering switching solutions.

Circuit Check serves OEMs and contract manufacturers across five primary verticals: automotive (ADAS, EV charging, infotainment, safety systems), medical (patient monitoring, infusion pumps, imaging), military and aerospace (F-16/F-22/F-35 programs, ITAs, avionics), industrial, and data center/AI hardware. Revenue is generated through project-based hardware sales of custom ATE platforms and fixtures, professional services for ICT programming and software development (LabVIEW, C/C++, TestStand, CCITest), and a growing recurring revenue layer via tiered Service Contracts and the Test Partner software platform, which integrates with WATS, NI SystemLink, and Keysight PathWave for remote test support and analytics. The company sells exclusively through a direct enterprise field sales motion backed by field engineers, supported by a technical blog, 'On Deck with Circuit Check' podcast, and presence at MD&M West and IEEE Aerospace conferences.

The company is privately held and PE-backed, having received investment from P2G Capital and Merit Capital in February 2024 and acquired Solution Sources Programming (SSP) in August 2025 to add Silicon Valley presence and ICT programming capabilities. It operates globally across the United States, Canada, Mexico, China, Malaysia, and the United Kingdom, with a workforce in the 101-250 range and a self-reported base of 4,600+ turnkey ICT fixture and programming projects and hundreds of thousands of fixtures delivered over its 45+ year history.

Name

Circuit Check

Legal name

Circuit Check, Inc.

Website

https://circuitcheck.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

101–250 employees

Short description

Circuit Check designs and manufactures modular automated test equipment and custom test fixtures for electronics OEMs and contract manufacturers across automotive, medical, military/aerospace, industrial, and data center/AI verticals. It sells primarily through direct enterprise field sales, supplemented by recurring service contracts and the Test Partner software platform.

Ownership category

akta.pro rank

Product category

Automated Test Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

akta.pro secondary industry

Testing, Commissioning & Electrical Safety (NFPA 70E/Arc Flash) (EDAOABAM)

Keywords

• Automated test equipment
• In-circuit test fixtures
• Functional test systems
• Electronic manufacturing test
• Test fixture design

Headquarters

HQ city

Maple Grove

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Automated Test Equipment and Test Fixtures (Hardware Sales): Circuit Check designs, builds, and delivers custom automated test systems (ATE platforms such as the 300, 600, 800, and 1000 Series) and test fixtures (in-circuit and functional test fixtures) to OEMs and contract manufacturers. Revenue is generated from one-time capital equipment sales and fixture fabrication. These systems are configured to customer-specific requirements and often include modular instrumentation, switching hardware, and custom mechanical fixturing.
2. ICT Programming and Software Development: Circuit Check develops In-Circuit Test (ICT) programs for PCBAs of every size and complexity, supporting boards from fewer than 100 nets to over 10,000+ nets. Software development services include LabVIEW, C/C++, LabWindows/CVI, and TestStand-based test executives. This is a professional services and one-time license revenue stream.
3. Aftermarket Services and Service Contracts: Recurring revenue from service contracts providing proactive maintenance, priority remote and onsite support, parts and consumables, software updates, WATS analytics support, and Test Partner Lite access. Plans scale from essential coverage to full enterprise support.
4. Test Partner Software: Test Partner is a software product that securely connects functional test environments, providing real-time visibility, remote support, and analytics. It integrates with WATS, NI SystemLink, and Keysight PathWave. Revenue model for this product is subscription-based.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Circuit Check designs, fabricates, and integrates custom automated test equipment (ATE) and test fixtures for functional and in-circuit testing of printed circuit board assemblies. Its portfolio spans standalone, benchtop, compact, and high-throughput rotary/inline platforms (300/600/800/1000 Series plus 5000/6000 handlers) alongside ICT fixtures, Interface Test Adapters, and supporting CCITest and Test Partner software, delivered to OEMs and contract manufacturers.

Product overview

Circuit Check offers a comprehensive portfolio of automated test systems and test fixtures for functional test and in-circuit test (ICT) applications. The core product line includes multiple ATE platform tiers (1000 Series as the flagship standalone, 800 Series, 600 Series Compact, and 300 Series Benchtop) supporting various production volumes and test requirements. Supporting hardware includes the 5000 Series In-line Handler for automated inline testing and 6000 Series Rotary Handler for high-throughput applications. The ICT fixture portfolio features the Vortex Series vacuum boxes and High Node Count fixtures supporting over 10,000 probes. Specialized offerings include Interface Test Adapters (ITA) for military/aerospace applications, Tight Proximity Probing Technology for dense board populations, and comprehensive Test Software capabilities. Aftermarket services include Service Contracts and Test Partner for modernizing legacy test systems. Recent expansion through the SSP acquisition adds ICT Programming Solutions and flash programming capabilities to the portfolio.

Differentiator

Problem solved

Functional benefit

Products and services

• 1000 Series ATE Flagship configurable standalone automated test platform supporting PXI, VXI, and traditional instrumentation with interchangeable mass-interconnect fixturing for testing multiple products. Targeted at enterprise production test environments.
• 300 Series Benchtop ATE Lower-cost benchtop ATE platform with built-in professional fixturing, eliminating hand-probing with accurate, repeatable tooling and spring-loaded test probes. Designed for low-volume or engineering test applications.
• 600 Series Compact ATE Compact ATE platform with built-in professional fixturing and interchangeable drop-in capability, supporting automated functional test and programming within a self-contained enclosure under four square feet.
• 800 Series ATE Versatile ATE combining drop-in fixturing from the 600 Series with increased test equipment capacity of the 1000 Series, targeted at cost-effective full turnkey test solutions.
• 5000 Series In-line Handler Integrated inline automation solution combining automation, fixturing, and measurement hardware with quick-change fixture interface, supporting probing up to 1,500 nodes with top, bottom, or dual stage probing.
• 6000 Series Rotary Handler Rotary table handler for high-throughput PCBA testing, programming, marking, and vision inspection; modular, scalable platform supporting high-mix and high-volume production with quick-change fixture drop-in technology.
• Interface Test Adapter (ITA) Electro-mechanical interface solution for reliable connection between products and test instrumentation, with focus on military and aerospace markets and ITAR compliance.
• Vortex Series Vacuum Box Next-generation vacuum box for the Keysight 3070 ICT platform, with simplified design maximizing usable testable board size, 85-degree opening angle suitable for Cobot usage, rugged all-aluminum construction, and ESD compliance.
• Test Partner Software platform that securely connects legacy and modern functional test environments, providing real-time visibility, remote support, and analytics integration with WATS, NI SystemLink, and Keysight PathWave.
• Aftermarket Service Contracts Tiered service contracts providing proactive maintenance, priority remote and onsite support, parts and consumables, software updates, WATS analytics support, and Test Partner access, scaling from essential coverage to full enterprise support.
• ICT Programming Solutions Comprehensive In-Circuit Test programming service for PCBAs of every size and complexity (boards from fewer than 100 nets to over 10,000+ nets), including LED testing, In-System Programming, Flash/EEPROM programming, and AC-to-DC converter testing.
• Custom Test Systems Bespoke test system design, development, and deployment for challenging applications with modularity as a core design principle, leveraging Circuit Check's in-house engineering and fabrication capabilities.
• Build to Print Outsourced manufacturing and assembly services for test systems and fixtures built to customer-supplied documentation and drawings.
• Turn-Key Production and Design Verification Test End-to-end test solutions spanning production verification and design validation, including thermal shock, vibration, humidity/temperature, HALT, and HASS testing.
• FEA and Strain Gauge Testing Finite Element Analysis and strain gauge testing services identifying the lowest achievable strain levels during PCB testing, with IPC/JEDEC 9704 compliant reporting and design feedback to minimize micro strain before fabrication.
• High Node Count (HNC) Test Fixture Keysight i3070-compatible HNC test fixture supporting greater than 10,000 probes for large node-count boards, with reduced T-Board size enabling use of standard PCB manufacturing sizes.

Quantifiable outcome

• Over 4,600 turnkey ICT fixture and programming projects completed
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

Five partnerships are on record, tiered core.

• Solution Sources Programming (SSP)coreStrategic or Co-development Partner · 5 August 2025SSP is a Silicon Valley provider specializing in integrated test and programming solutions. Circuit Check's acquisition of SSP enhances its capabilities in high-density probing, thermal management, and comprehensive test solutions, expanding its presence in the technology sector and strengthening end-to-end test service offerings with local and global support.
• WATScoreTechnology or Integration · 20 June 2024WATS is a cutting-edge data analytics platform for test systems. Circuit Check's partnership with WATS provides test engineers with real-time insights from global test and repair data, enabling continuous improvement across production. Circuit Check and WATS share booth #2190 at MD&M West 2026.
• NI (National Instruments)coreTechnology or Integration · 3 August 2022Circuit Check partnered with NI on the launch of TestScale, a new product platform that offers customers a flexible and cost-effective testing solution as a standalone test fixture that is portable and requires no external equipment. Circuit Check also partners with NI on co-hosted hands-on demo events and PXI-based test system integration.
• Keysight TechnologiescoreTechnology or IntegrationKeysight Technologies is a key technology partner. Circuit Check's systems integrate with Keysight i3070 Series 6 In-Circuit Testers, Keysight SL1200A series for EV charging testing, and Keysight PathWave analytics. Circuit Check has worked with Keysight since 2011 on high node count test fixtures.
• WATS (Test Partner Integration)coreTechnology or IntegrationTest Partner integrates with WATS, NI SystemLink, and Keysight PathWave analytics platforms, enabling centralized test data collection, secure file transfer, automated backups, test limit and version control, and integration with customer analytics ecosystems.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Seica: Seica is an Italy-based provider of flying probe testers, functional test systems, and ICT fixtures for electronics manufacturing. Its dual focus on test equipment and fixture design mirrors Circuit Check's integrated offering across automotive, aerospace, and medical verticals.
• SPEA: SPEA is an Italian-headquartered manufacturer of automated test equipment and flying probe testers serving automotive, aerospace, medical, and industrial customers. Its product breadth in functional and in-circuit test directly competes with Circuit Check's modular ATE platforms.
• Acculogic: Acculogic provides flying probe testers, ICT systems, and functional test solutions for electronics manufacturers across automotive, aerospace, medical, and industrial sectors. Its combined equipment-plus-fixture approach is highly comparable to Circuit Check's integrated model.
• CheckSum: CheckSum designs and manufactures in-circuit test (ICT) fixtures and turnkey test solutions for PCBAs. As a US-based specialist focused primarily on fixtures, it competes most directly with Circuit Check's ICT fixture business and Vortex Series vacuum boxes.

Broad incumbents

• Teradyne: Teradyne is a global leader in automated test equipment, particularly for semiconductors and board test. While it operates at much larger scale and across multiple test categories, its board test business overlaps directly with Circuit Check's ICT and functional test offerings for OEMs and contract manufacturers.
• Keysight Technologies: Keysight is both a key technology partner (i3070 ICT, SL1200A EVSE test platform) and a broad incumbent in electronic test and measurement. Its instruments and platforms underpin much of Circuit Check's solutions, and Keysight offers its own fixture and integration services that overlap at the high end.
• Cohu (including Cohu Test & Handling / ECT): Cohu is a broad incumbent in semiconductor test and handling, including the legacy Everett Charles Technologies (ECT) fixture business. Its fixture and contactor products overlap with Circuit Check's ICT fixture portfolio, particularly for high-volume production environments.
• National Instruments (NI, now part of Emerson): NI is a core technology partner (PXI modular instrumentation, TestStand, SystemLink) and a broad incumbent in test and measurement. Its modular PXI architecture is the foundation of Circuit Check's 1000/800/600 Series ATE platforms, while its TestScale co-launch with Circuit Check represents deeper ecosystem integration than pure competition.

Regional players

• Test Research, Inc. (TRI): TRI is a Taiwan-based manufacturer of AOI, ICT, and functional test equipment serving global electronics manufacturers. While primarily Asia-Pacific-focused, its ICT fixture and test platform offerings overlap with Circuit Check's portfolio, especially for customers with Asia-based manufacturing.

Others

• Ingun Prüfmittelbau: Ingun is a global supplier of test probes, fixturing components, and switching solutions for electronics test. While not a direct competitor in full ATE systems, Ingun supplies the probe pin ecosystem that Circuit Check uses in its fixtures and represents an adjacent enabler in the same value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/circuit-check-inc-

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Circuit Check