LED Lighting PCBA Production: End-to-End Process & Equipment

1. PCB Fabrication

- CNC Drilling & Routing Machine  

  Precision drilling (±0.05mm) for micro-vias and board contour cutting.  

- LDI (Laser Direct Imaging) 

  High-resolution (20μm) circuit patterning for fine-line PCBs.  

2. Surface Treatment  

- OSP/ENIG/HASL Lines  

  OSP (Organic Solderability Preservative): RoHS-compliant oxidation protection.  

  ENIG (Electroless Nickel Immersion Gold): 3–5μm Ni/Au layer for wire bonding.  

  HASL (Hot Air Solder Leveling):** Lead-free solder coating for cost-effective finishes.  

3. Solder Mask & Silkscreen  

- UV Curing Solder Mask Printer  

  Applies 25–50μm epoxy coating (IPC-SM-840 Class T) for insulation.  

- Automated Silkscreen Printer  

  Laser-aligned component markings (text/logos) with 0.15mm line accuracy.  

5. Through-Hole Assembly  

- DIP Insertion Machine  

  Auto-insertion for axial/radial components (e.g., connectors).  

- Selective Wave Soldering  

  Programmable nozzle soldering with <2% dross generation.  

6. Post-Assembly Processing  

- Conformal Coating System 

  Selective UV-resistant coating (silicone, acrylic, or urethane).  

- Laser Marking Machine  

  Permanent UL/CE compliance codes (20μm engraving depth).  

7. Quality Assurance  

- Automated X-Ray Inspection (AXI)  

  BGA/CSP void detection (<15% area tolerance).  

- In-Circuit Tester (ICT)  

  100% electrical continuity verification (0.1Ω resolution).  

8. Final Testing & Packaging  

- Thermal Shock Chamber  

  -40°C to +125°C cycling (MIL-STD-883 compliant).  

- ESD-Safe Packing Line  

  Moisture-barrier bags with IoT-enabled tracking labels.  

Key Advantages

✅ Full Vertical Integration

   In-house control from PCB fabrication to PCBA functional testing.  

✅ Zero Defect Guarantee

   3D AOI + X-Ray + ICT ensures ≤50 DPPM (defects per million).  

✅ Fast Turnkey Solutions  

   7-day PCB prototyping | 15-day PCBA delivery.  

✅ Certified Sustainability  

   ISO 14001 | IECQ QC 080000 (Hazardous Substance Control).