This 6-layer FR4 PCB is designed for industrial automation, power control, and communication equipment requiring extensive component integration and reliable performance. With dimensions of 289.00×145.00mm and a 1.6mm thickness, the board provides ample space for high-power devices, relays, and multiple connectors while maintaining mechanical rigidity via FR4 material (dielectric constant εr=4.5), suitable for long-term operation in environments with temperature fluctuations and vibration.

Layer Architecture & Electrical Design

  • 6-Layer Stackup:
    • 4 signal layers + 2 power/ground planes to isolate digital/analog signals and minimize EMI.
    • Inner power planes optimized for 24V industrial power distribution, with ground planes stitched via vias for enhanced shielding.
  • 1OZ (35μm) Copper Thickness:
    • Supports up to 8-10A current (wide traces) and reduces power loop impedance via copper pours.
    • Enables fine-pitch routing (min line/space: 75μm/75μm) for high-speed signals (Ethernet, CANopen).

Industrial-Grade Process Features

  • Blue LPI Solder Mask:
    • Enhances visual contrast for component identification in complex layouts.
    • Resists chemicals, oils, and coolants typical in industrial environments.
  • ENIG Surface Finish:
    • 3-5μm nickel layer for oxidation resistance; 0.05-0.1μm gold layer ensures long-term solderability and wire bonding compatibility.
  • SMT+DIP Mixed Assembly:
    • SMT: Supports 0201 passives, QFP/PGA ICs, and 0.5mm pitch BGAs.
    • DIP: Accommodates through-hole connectors (DB25, terminal blocks) and relays for field wiring.

Manufacturing & Quality Control

  • High-Precision Fabrication:
    • Laser Direct Imaging (LDI) for 75μm trace accuracy; electrolytic copper plating ensures uniform thickness.
    • Edge milling for smooth, burr-free surfaces suitable for panel mounting.
  • Comprehensive Testing:
    • 100% AOI for solder mask and silkscreen quality.
    • Flying probe testing for electrical continuity (≤0.1Ω) and isolation (≥100MΩ).
    • Vibration (5-500Hz, 2G) and thermal cycling (-40°C to +85°C, 500 cycles) to simulate industrial conditions.
  • Standards Compliance:
    • IPC-6012 Class 2, RoHS/REACH certified.

Industrial Applications

  • PLC Control Panels: Integrates programmable logic controllers, I/O modules, and power management for factory automation.
  • Power Monitoring Systems: Supports current/voltage sensors, RS485 communication, and relay outputs for switchgear monitoring.
  • Industrial Communication Gateways: Enables protocol conversion (Modbus RTU to Ethernet) for smart factory networks.
  • Renewable Energy Inverters: Manages solar/wind power conversion with large copper pours for thermal dissipation.