4 Layer FR4 PCB Production Record #FR4-20251216-009
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 5 pcs |
| Layers | 4 Layers | Board Type | Panel PCB |
| Dimensions | 190.8 x 278.4 mm | Copper Weight | 1oz |
| Thickness | 1.6 mm | Min Track / Spacing | 6/6mil↑ |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.3mm↑ |
| Solder Mask | Green | Silkscreen | None |
| Stack-up | Default | Impedance Control | No |
This production record covers five panels of a standard 4-layer FR4 PCB, sized at 190.8 x 278.4 mm and built to 1.6 mm thickness with 1 oz copper layers. With a conventional minimum feature size of 6 mil and no impedance control requirements, the build focused on achieving a uniform green solder mask and high-quality immersion gold ENIG finish without silkscreen. These choices required specific attention to mask alignment and plating consistency across the relatively large panel area.
The team completed engineering review and material preparation, followed by inner layer imaging, circuit etching, and precise layer stack alignment before high-pressure lamination. Solder mask application preceded electroless nickel and immersion gold deposition steps that produced flat, oxidation-resistant pad surfaces. All five panels then passed full electrical testing that verified continuity and isolation across every net.
Manufacturing concluded in 5.3 days with consistent layer registration and plating thickness that aligned with the default stackup and specified parameters, delivering boards ready for reliable assembly.
Standard multilayer solution offering practical routing density and controlled impedance for industrial and consumer electronics.
Real multilayer FR4 PCB CAM review cases covering stack-up confirmation, impedance control, copper balance, via tenting, and edge clearance EQs. Discover practical DFM best practices for 4-layer and higher boards to reduce engineering queries, prevent warpage, and improve first-pass yield.
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| FR4-20260717-013 | FR4 PCB | 4 | 43.81 x 86.99 | Black | HASL Lead Free | 10 | View detail |
| FR4-20260708-062 | FR4 PCB | 4 | 462.57 x 205 | Matte Black | ENIG (Immersion Gold) | 5 | View detail |
| FR4-20260630-014 | FR4 PCB | 2 | 126 x 145 | Green | ENIG (Immersion Gold) | 10 | View detail |
