2-Layer Lead-Free HASL Industrial Control Adapter Board
This 2-layer lead-free HASL industrial control adapter board is designed for industrial control adapter applications, featuring precise manufacturing tolerances and robust construction for reliable performance in demanding environments.
Key Specifications
| Layer Count |
2 Layers |
| Material |
FR4 |
| Board Thickness |
1.6mm |
| Copper Thickness |
1.5/1.5 oz |
| Minimum Hole Size |
0.25mm |
| Minimum Line Width |
0.18mm |
| Minimum Line Spacing |
0.18mm |
| Solder Mask Color |
Green |
| Surface Finish |
LF-HASL |
| Application Field |
Industrial Adapter Board |
Critical Production Processes
- Profile dimension tolerance controlled within ±0.1mm for mounting hole alignment
- Shaping using V-cut or routing processes to prevent fiberglass burrs
- V-cut depth precisely controlled with remaining thickness typically 1/3 of board thickness
- New routing bits used to avoid burrs and copper slag residue
- Drilling process uses coated drill bits to reduce hole wall burrs
- Desmearing treatment after drilling
- Micro-etching roughening required before lead-free HASL
- Board baking at 120°C for 1 hour to remove moisture
- Cooling and flattening after HASL with warpage inspection (≤0.75%)
- Flying probe testing for 100% electrical testing
This solution is suitable for PLC power supply boards or relay output boards, which have high requirements for assembly precision.
Technical Specifications
| Item |
Mass Production Capability |
Extreme Capability |
| Board Thickness Range |
0.3~6.0mm |
0.3~6.0mm |
| Exposure Alignment Accuracy |
±0.015mm |
±0.005mm |
| Minimum Annular Ring |
Single side ≥0.05mm |
Single side ≥0.05mm |
| Min Line Width/Space (1/3oz base copper) |
0.05mm / 0.05mm |
0.045mm / 0.045mm |
| Min Line Width/Space (1/2oz base copper) |
0.05mm / 0.05mm |
0.05mm / 0.05mm |
| Min Line Width/Space (1oz base copper) |
0.075mm / 0.075mm |
0.075mm / 0.075mm |
| Etching Tolerance (1/3oz base copper) |
±0.005mm |
±0.005mm |
| Etching Tolerance (1/2oz base copper) |
±0.005mm |
±0.005mm |
| Etching Tolerance (1oz base copper) |
±0.0075mm |
±0.0075mm |
| Gold Finger Total Pitch Tolerance |
<30mm: ±0.05mm
30~60mm: ±0.075mm |
<30mm: ±0.03mm
30~60mm: ±0.05mm |