Industrial Control PCB Assembly for Automation and Process Control

Our SMT lines achieve placement accuracy within ±30 µm and support components down to 01005 packages.

For industrial control components requiring high density layouts, we handle BGA pitches down to 0.2 mm and QFP spacing as fine as 0.25 mm.

Copper thickness from 0.5 oz to 5 oz is supported, with heavy copper up to 20 oz for high current control PCB designs.

We assemble embedded wireless modules for industrial control, including ESP32, ESP8266, Quectel, Fibocom and Simcom.

RF layouts follow 50 ohm antenna feed geometry with keep‑out, shield can footprints and low loss dielectrics where needed.

We validate radio paths with S11 checks, conduct power measurements, and connectorized test points for repeatable RF calibration.

Through-hole technology (THT) assembly is available for components demanding enhanced mechanical strength in industrial control systems often subjected to vibration, shock and thermal cycling.

Drilling capabilities include finished hole sizes down to 0.15 mm for boards ≤1.6 mm thick, with aspect ratios up to 12:1 for plated through-holes.

We offer HDI PCB structures with via-in-pad, stacked microvias, and blind/buried via configurations for compact industrial control board designs.

These support signal integrity and space optimization in complex industrial control equipment, especially where EMI control is necessary.

For space-constrained control enclosures, we assemble flexible PCB and rigid-flex PCB designs using polyimide and high Tg FR4 substrates.

Thickness ranges from 0.2 mm to 6.0 mm with warp and twist ≤0.7%, ensuring dimensional stability during the assembly process.

We integrate SMT and THT on the same control PCB when both miniaturization and mechanical robustness are required.

This approach is often used in process control systems and motion control applications where signal processing circuits and high power connectors must coexist.

Assemblies support CAN, RS485, Ethernet, Modbus and industrial Wi Fi or BLE for plant networks. Designs apply galvanic isolation, TVS protection, and common‑mode chokes to protect control equipment in noisy plants.

We route differential pairs to target impedance and specify transformer‑isolated magnetics for reliable links.

Surface finishes include leaded HASL, lead-free HASL, ENIG (0.05 to 0.2 µm Au over 3 to 6 µm Ni), OSP, immersion tin, and immersion silver.

These are selected according to industrial processes and corrosion resistance needs. Conformal coatings protect against dust, moisture, and chemicals in harsh industrial settings.

Every industrial control PCBA undergoes 100% automated optical inspection (AOI), X-ray inspection for hidden joints and either flying probe or in-circuit testing.

Extra tests include thermal shock, solderability, impedance verification and microsection analysis to confirm copper plating quality.

For connected control PCB assemblies, we add RF and protocol tests. That includes over the air checks, conducted sensitivity sweeps, link margin assessments, and network stack validation for CAN, RS485, and Ethernet. We provide log files and pass criteria with each batch.

Our team can handle complete PCB assembly solutions, from fabrication to sourcing components, to final assembly and packaging.

Our production capacity of 600,000 components per hour supports both prototype PCB assembly and high volume PCB assembly manufacturing with consistent quality control.