4 Layer FR4 PCB Production Record #FR4-20251220-014
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 1125 pcs |
| Layers | 4 Layers | Board Type | Panel PCB |
| Dimensions | 50 x 50.7 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 | Matte Green | Silkscreen | White |
| Stack-up | Custom | Impedance Control | No |
For this production of 1,125 units, we manufactured 4-layer FR4 PCBs in panel format, each 50 x 50.7 mm with 1.6 mm thickness and 1 oz copper. We followed the custom stackup closely during layer alignment and high-pressure lamination to ensure accurate registration across the four layers. The 6/6 mil minimum track and spacing along with 0.3 mm holes fit standard manufacturing capabilities, supporting efficient etching and processing of the full order.
We applied matte green soldermask and white silkscreen before completing the surface with immersion gold ENIG. Electroless nickel deposition and gold immersion were controlled to provide uniform pad coverage and long-term reliability on every board. We then performed batch AOI inspection and electrical testing to confirm all panels met the required standards without impedance control.
Production wrapped up in six days, yielding a reliable set of standard 4-layer FR4 PCBs with consistent quality throughout the batch. The combination of conventional geometry and ENIG finish delivered boards ready for straightforward assembly while maintaining dimensional stability from lamination through final yield control.
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 |
|---|---|---|---|---|---|---|---|
| FR4-20260630-014 | FR4 PCB | 2 | 126 x 145 | Green | ENIG (Immersion Gold) | 10 | View detail |
| FR4-20260605-042 | FR4 PCB | 4 | 65 x 100 | Green | HASL Lead Free | 5 | View detail |
| FR4-20260605-041 | FR4 PCB | 4 | 66.04 x 54.1 | Green | HASL Lead Free | 5 | View detail |
