4 Layer FR4 PCB Production Record #FR4-20251222-002
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 50 pcs |
| Layers | 4 Layers | Board Type | Panel PCB |
| Dimensions | 49.41 x 51.74 mm | Copper Weight | 1oz |
| Thickness | 1.6 mm | Min Track / Spacing | 4/4mil |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.2mm |
| Solder Mask | Green | Silkscreen | White |
| Stack-up | Default | Impedance Control | No |
This production run delivered 50 panels of a standard 4-layer FR4 PCB measuring 49.41 × 51.74 mm with 1.6 mm thickness and 1 oz copper. The design called for 4/4 mil minimum trace and spacing together with 0.2 mm holes, placing it in the tighter geometry range that demands exact registration during inner layer imaging and etching. Green solder mask, white silkscreen, and immersion gold ENIG surface finish completed the stack without impedance control requirements.
We executed the full sequence from engineering review through material preparation, layer stack alignment, and high-pressure lamination. Solder mask application was followed by electroless nickel and immersion gold deposition under controlled parameters to ensure uniform plating thickness. Final electrical testing verified continuity and isolation across all 50 panels, confirming consistent results within the 4.3-day schedule.
The combination of fine-line circuitry and ENIG finish on these compact 4-layer panels was handled with standard production tooling, yielding boards that met every specified tolerance and surface requirement.
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 |
