4 Layer FR4 PCB Production Record #FR4-20260105-009
| 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 details the manufacturing of 300 standard 4-layer FR4 PCBs characterized by their extended 418 x 38 mm footprint and slim 0.8 mm thickness. These boards featured 1 oz copper layers with conventional 6 mil track and spacing rules, along with minimum hole sizes of 0.3 mm. The application of green soldermask, white silkscreen, and immersion gold ENIG finish provided a durable and assembly-friendly surface without the need for impedance control.
Given the thin multilayer construction and high aspect ratio, we emphasized controlled lamination parameters and layer alignment to maintain flatness and interlayer registration. The process sequence included circuit imaging and etching, solder mask coating, and precise nickel-gold plating. All boards then advanced through automated optical inspection and electrical testing to validate integrity across the full batch.
Completed in 10.5 days, this run delivered reliable boards tailored to the specified parameters, reflecting effective process management for thin, elongated multilayer designs.
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 |
