This 4-layer FR4 PCB addresses the needs of industrial control applications requiring extensive component integration, reliable power management, and robust mechanical stability. With dimensions of 350mm×125mm and a 1.5mm thickness, the board provides a large surface area for mounting high-power devices, relays, and connectors while maintaining rigidity for panel installations in control cabinets. Constructed from FR4 material, it offers stable electrical insulation (dielectric constant εr=4.5) and mechanical strength, suitable for operation in industrial environments with temperature fluctuations and vibration.
- 4-Layer Stackup:
- 2 signal layers + 2 power/ground planes for efficient EMI suppression
- Inner power planes optimized for 24V DC distribution in industrial control systems
- 1OZ (35μm) Copper Thickness:
- Supports moderate current loads (up to 10A per trace) for motor drivers and solenoid valves
- Copper pour areas on power layers reduce resistive heating
- Green LPI Solder Mask:
- Standard industrial color for easy visual inspection
- Chemical resistance against oils, coolants, and cleaning agents
- ENIG Surface Finish:
- 3–5μm nickel layer prevents corrosion in harsh environments
- 0.05–0.1μm gold layer ensures reliable solder joints for field-replaceable components
- Mixed SMT+DIP Capability:
- SMT: High-density placement of microcontrollers and signal conditioning ICs
- DIP: Robust through-hole connectors (e.g., terminal blocks, DB9 ports) for field wiring
- Large-Format Fabrication:
- Laser direct imaging (LDI) for 75μm line/space accuracy across the entire board
- Electrolytic copper plating with uniform thickness verification
- Rigorous Testing:
- 100% AOI inspection for solder mask coverage and silkscreen clarity
- Flying probe testing for electrical continuity (≤0.1Ω) and isolation (≥100MΩ)
- Vibration testing (5–500Hz, 2G) to simulate industrial machine operation
- Compliance:
- IPC-6012 Class 2 for industrial electronics
- RoHS/REACH compliant for hazardous substance restrictions
- PLC Control Panels:
Mounts programmable logic controllers, I/O modules, and power supplies for factory automation.
- Motor Drive Systems:
Manages power distribution for variable frequency drives (VFDs) in conveyor systems.
- Building Automation:
Integrates HVAC controllers, lighting panels, and security systems in commercial buildings.
- Renewable Energy Inverters:
Supports power conversion for solar or wind energy systems with robust thermal management.
By combining a large form factor, 4-layer power/signal separation, and mixed assembly capabilities, this PCB enables engineers to build comprehensive industrial control systems in a single board. The green solder mask and ENIG finish balance standardization with reliability, while the 350mm×125mm layout accommodates both high-power components and complex signal routing. Backed by ISO 9001:2015 certification, it delivers consistent performance for industrial applications where downtime and maintenance costs must be minimized.
