Industrial automation equipment requires PCBs that can withstand harsh operating environments (extreme temperatures, vibrations, dust, and electrical noise) while maintaining high reliability and longevity.
Leading PCB fabrication and Electronic Manufacturing Services (EMS) providers specializing in or supporting industrial automation include global heavyweights and specialized high-mix domestic manufacturers:
Global & Large-Scale EMS Providers
Jabil Inc. : Known for massive scale and advanced digital manufacturing, Jabil handles complex industrial automation systems, offering comprehensive sketch-to-scale services from prototype verification to global volume manufacturing and supply chain logistics.
Ltd. : provides global-scale hardware manufacturing and robust industrial segment capabilities, specializing in robust automation, robotics, and power-efficient electronics.
Sanmina Corporation : Renowned for complex, high-reliability engineering, Sanmina excels in rigid-flex, high-density interconnect (HDI), and mission-critical board fabrication for industrial, medical, and defense applications.
Benchmark Electronics : Specializes in high-mix, low-to-medium volume production. They are a favored partner for industrial automation controls because of their precision engineering, advanced testing, and custom system assemblies.
Specialized & Regional PCB/EMS Providers
Technotronix : Based in California, they are ISO 9001 and AS9100 certified, offering quick-turn prototype and full-scale industrial PCB fabrication, box builds, and specialized conformal coating for rugged factory automation environments.[1]
Sierra Assembly Technology : Located in Chino, CA, they focus on high-technology electronic assemblies, rigorous quality assurance, and quick-turn production ideal for industrial controls and automated machinery.[1]
If you're looking for a specific partner, tell me:
Are you looking for quick-turn prototyping or high-volume mass production?
Do you need local (US-based) or offshore manufacturing?
I can help narrow down the ideal match for your project.
For industrial automation equipment—PLCs, motor drives, robotics, motion controllers, HMI/control boards, sensors, and machine-control electronics—the leading PCB suppliers tend to fall into two groups: large global manufacturers for production programs, and specialized quick-turn/low-volume providers.
Major PCB fabrication / manufacturing providers
TTM Technologies — One of the strongest fits for industrial automation. TTM explicitly serves industrial and instrumentation markets, including automated industrial applications, robotics, and automated test equipment. It supports prototypes through medium/high-volume production and offers HDI, rigid-flex, high-layer-count, heavy-copper, thermal-management, and controlled-impedance technologies.
Sanmina — Particularly relevant when you need PCB fabrication + PCBA + testing + system integration. Sanmina manufactures PCBs and assemblies for industrial controls and power applications and has manufacturing across the Americas, Europe, and Asia.
Eurocircuits — Well suited to engineering prototypes and small-series production, especially when European manufacturing is desirable. It provides both bare PCB fabrication and assembly from facilities in Germany and Hungary, with DFM/DRC tools and support for up to 16-layer standard boards and HDI.
CircuitHub — Strong option for rapid prototypes and low-volume robotics/automation hardware. It offers automated turnkey assembly, with its site reporting a 3-day standard full-turnkey service and U.S. manufacturing.
VR Industries — More specialized toward industrial electronics. Its services specifically cover automation, process control, and instrumentation, including assembled and tested boards and UL-certified systems.
ETEMCO — A U.S. option focused on industrial automation and controls, particularly high-mix, low-to-medium-volume prototype-to-production work.
How I'd segment the market
Requirement
Providers worth evaluating
High-volume industrial automation
TTM, Sanmina
Complex/high-layer-count boards
TTM, Sanmina
Robotics / Industry 4.0
TTM, CircuitHub, Sanmina
Prototype → small production
Eurocircuits, ,
For an automation OEM, I would evaluate suppliers on more than PCB price: IPC Class 2 vs. Class 3 capability, UL requirements, high-Tg laminates, heavy copper/current capacity, thermal management, conformal coating, automated optical/X-ray inspection, functional testing, traceability, component obsolescence management, DFM support, and the ability to transition from prototype to production without changing the manufacturing process.
If you tell me your annual volume, board size/layer count, approximate PCB/PCBA cost target, and whether you need U.S. manufacturing, I can narrow this to a more useful shortlist of 5–10 suppliers and compare their capabilities.
Jabil Inc. : Known for massive scale and advanced digital manufacturing, Jabil handles complex industrial automation systems, offering comprehensive sketch-to-scale services from prototype verification to global volume manufacturing and supply chain logistics.
Ltd. : provides global-scale hardware manufacturing and robust industrial segment capabilities, specializing in robust automation, robotics, and power-efficient electronics.
