PCB Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | Flexible PCB | Quantity | 125 pcs |
| Layers | 4 Layers | Board Type | Single PCB |
| Dimensions | 157.2 x 38.6 mm | Copper Weight | 1/3OZ |
| Thickness | 0.2 mm | Min Track / Spacing | 3/3mil |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.3mm↑ |
| Solder Mask | Yellow | Silkscreen | White |
| Material | Rolled Copper | Stiffener | PI Stiffener |
Manufacturing Timeline
Logistics Information
Key Manufacturing Processes
Manufacturing Summary
This production record covers 125 units of 4-layer flexible PCBs built on 0.2 mm polyimide with 1/3 oz rolled copper. The boards measure 157.2 × 38.6 mm and incorporate 3/3 mil trace and spacing, a yellow solder mask, white silkscreen, PI stiffeners, and immersion gold ENIG finish. Minimum hole size of 0.3 mm was maintained across the thin construction, requiring precise material handling to preserve flexibility while meeting the tight geometry.
We performed inner layer imaging, circuit etching, high-pressure lamination, and coverlay application under controlled conditions to ensure layer registration and mechanical stability. Electroless nickel and immersion gold deposition followed solder mask processing, delivering uniform plating on the fine features. Dynamic flex testing was conducted to verify endurance, while 100 % electrical testing confirmed net continuity and isolation.
The entire run was completed in 16.4 days with consistent results across all boards, demonstrating repeatable execution for thin, high-density flexible circuits that require both precision etching and reliable mechanical performance.
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Real Production Records
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| FPC-20260526-023 | Flexible PCB | 4 | 50 x 75 | Black | ENIG (Immersion Gold) | 5 | View detail |
| FPC-20260516-007 | Flexible PCB | 3 | 76.2 x 457.2 | Yellow | ENIG (Immersion Gold) | 5 | View detail |
| FPC-20260509-056 | Flexible PCB | 4 | 86 x 46 | Yellow | ENIG (Immersion Gold) | 50 | View detail |
