4 Layer FR4 PCB Production Record #FR4-20260105-008
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 300 pcs |
| Layers | 4 Layers | Board Type | Single PCB |
| Dimensions | 418 x 38 mm | Copper Weight | 1oz |
| Thickness | 0.8 mm | Min Track / Spacing | 6/6mil↑ |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.3mm↑ |
| Solder Mask | Green | Silkscreen | White |
| Stack-up | Default | Impedance Control | No |
This production record covers 300 units of standard 4-layer FR4 PCB, each measuring 418 × 38 mm and finished at 0.8 mm thickness. The long, narrow aspect ratio combined with the thinner-than-standard board required precise inner layer imaging, controlled high-pressure lamination, and careful layer stack alignment to maintain registration across the extended panel. Material preparation and engineering review focused on minimizing warp while preserving the default stackup with 1 oz copper layers.
We applied 6/6 mil minimum track spacing and 0.3 mm holes using conventional processes, then completed solder mask application, electroless nickel deposition, and immersion gold deposition to produce a uniform ENIG surface finish. Green soldermask with white silkscreen was followed by batch AOI inspection, electrical testing, and yield control. The full cycle from circuit imaging through final delivery was executed in 10 days, delivering consistent boards suited 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 |
