PCB Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | Flexible PCB | Quantity | 10 pcs |
| Layers | 4 Layers | Board Type | Single PCB |
| Dimensions | 112.5 x 42.5 mm | Copper Weight | 1OZ |
| Thickness | 0.35 mm | Min Track / Spacing | 4/4mil |
| Surface Finish | ENIG (Immersion Gold) | Min Hole Size | 0.3mm↑ |
| Solder Mask | Yellow | Silkscreen | White |
| Material | Rolled Copper | Stiffener | FR4 Stiffener |
Manufacturing Timeline
Logistics Information
Key Manufacturing Processes
Manufacturing Summary
This order required manufacturing ten units of a 4-layer FPC using rolled copper and polyimide material. With dimensions of 112.5 x 42.5 mm and a total thickness of only 0.35 mm, the design incorporated FR4 stiffeners for added rigidity in specific zones. Due to the tighter 4/4 mil minimum track and spacing, the fabrication process included precise circuit imaging, etching, and trace width compensation.
Engineering review and stackup impedance engineering ensured proper layer configuration before high pressure lamination and layer stack alignment. Following coverlay lamination, solder mask application, and electroless nickel with immersion gold deposition, the boards received TDR impedance testing together with dynamic flex testing. This verified both the electrical parameters and the circuit's resilience to bending. White silkscreen printing provided clear identification on the yellow soldermask background. Every board passed strict electrical testing.
Production for this impedance controlled flexible PCB was completed in 20.1 days, yielding a reliable product set that aligns with the customer's technical requirements.
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Real Production Records
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| FPC-20260821-065 | Flexible PCB | 4 | 111.25 x 16.75 | Yellow | ENIG (Immersion Gold) | 5 | View detail |
| FPC-20260819-026 | Flexible PCB | 4 | 59.8 x 65.5 | Yellow | ENIG (Immersion Gold) | 25 | View detail |
| FPC-20260810-032 | Flexible PCB | 4 | 357 x 45.8 | Black | ENIG (Immersion Gold) | 1000 | View detail |
