2 Layer FR4 PCB Production Record #FR4-20260419-027
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 5 pcs |
| Layers | 2 Layers | Board Type | Single PCB |
| Dimensions | 77 x 137 mm | Copper Weight | 1oz |
| Thickness | 1.6 mm | Min Track / Spacing | 5/5mil |
| Surface Finish | HASL Lead Free | Min Hole Size | 0.3mm↑ |
| Solder Mask | Green | Silkscreen | White |
| Stack-up | Default | Impedance Control | No |
This production run of five 2-layer FR4 PCBs measured 77 × 137 mm with standard 1.6 mm thickness and 1 oz copper weight. The 5/5 mil trace and spacing geometry required careful circuit imaging and etching to maintain consistent line definition across the boards. Green soldermask paired with white silkscreen provided clear contrast while following the default stackup, and the entire sequence stayed within a compact 1.7-day window from material preparation to completion.
HASL Lead Free surface finish was achieved through molten solder coating and hot air leveling, producing a uniform protective layer suitable for both through-hole and surface-mount assembly. With no impedance control specified and a minimum hole size of 0.3 mm, the process remained focused on standard FR4 fabrication tolerances. Each board then received full electrical testing to confirm net continuity and isolation.
The small quantity and tighter geometry were managed as individual single PCBs rather than panels, resulting in clean edges and reliable dimensional stability. All five boards met the stated specifications without deviation, supporting consistent performance for the intended application.
This order also received positive feedback from the customer regarding the consistent quality and reliable delivery. View the full customer review→
2 layer FR4 PCBs deliver cost-effective solutions for most electronic designs. Their simple structure enables consistent quality and efficient production cycles.
Real Engineering Queries (EQ) and DFM issues for 2 Layer FR4 PCB (double-sided boards) from actual production reviews. Learn how to avoid common problems with via treatment, silkscreen on pads, solder mask openings, hole attributes, board edge clearance, and other frequent design pitfalls.
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| FR4-20260708-079 | FR4 PCB | 2 | 323.77 x 379.03 | White | HASL Lead Free | 400 | View detail |
| FR4-20260708-015 | FR4 PCB | 2 | 15 x 41.7 | White | HASL Lead Free | 5 | View detail |
| FR4-20260630-014 | FR4 PCB | 2 | 126 x 145 | Green | ENIG (Immersion Gold) | 10 | View detail |
