6 Layer FR4 PCB Production Record #FR4-20260318-025
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | FR4 PCB | Quantity | 25 pcs |
| Layers | 6 Layers | Board Type | Panel PCB |
| Dimensions | 330 x 80 mm | Copper Weight | 1oz |
| Thickness | 1.6 mm | Min Track / Spacing | 6/6mil↑ |
| Surface Finish | HASL Lead Free | Min Hole Size | 0.3mm↑ |
| Solder Mask | Green | Silkscreen | White |
| Stack-up | Default | Impedance Control | No |
This production record documents a batch of standard 4-layer FR4 PCBs completed on 21 January 2026. Boards measured 150 × 100 mm with 1.6 mm finished thickness and 1 oz copper on all layers. Minimum trace width and spacing of 6 mil fell squarely in the conventional range, allowing standard etching parameters while still requiring careful oxide treatment and registration control during multilayer build-up.
After engineering review and material preparation, inner layer imaging and etching created the internal circuitry. Layers were aligned and bonded under high pressure lamination, followed by through-hole plating, solder mask application, and molten solder coating with hot air leveling to produce a uniform HASL Lead Free surface. The chosen process sequence maintained consistent copper thickness and pad planarity across the panels.
Electrical testing verified netlist compliance and insulation resistance on every board. The entire order moved from raw material to finished product in 3.3 days, delivering stable dimensional accuracy and surface quality that matched the customer’s assembly needs for this conventional multilayer specification.
Six layer FR4 boards provide optimized routing density and power distribution. They require precise lamination and plating process control to maintain yield and reliability.
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 |
|---|---|---|---|---|---|---|---|
| FR4-20260731-032 | FR4 PCB | 2 | 100 x 120 | Black | HASL Lead Free | 5 | View detail |
| FR4-20260730-005 | FR4 PCB | 2 | 168 x 107 | Green | HASL with Lead | 5 | View detail |
| FR4-20260727-018 | FR4 PCB | 2 | 44.8 x 57 | Matte Black | HASL Lead Free | 20 | View detail |
