| Parameter | Value | Parameter | Value |
|---|---|---|---|
| PCB Type | Flexible PCB | Quantity | 25 pcs |
| Layers | 1 Layers | Board Type | Panel PCB |
| Dimensions | 18.5 x 190 mm | Copper Weight | 1/2OZ |
| Thickness | 0.1 mm | Min Track / Spacing | 6/6mil↑ |
| Surface Finish | Hard gold plating | Min Hole Size | 0.3mm↑ |
| Solder Mask | Yellow | Silkscreen | White |
| Material | Rolled Copper | Stiffener | PI Stiffener |
This single-layer flexible PCB measured 18.5 × 190 mm with a base thickness of 0.1 mm and used rolled copper at 1 oz / ½ oz. Produced as 25 pieces in a 5×1 panel for 5 sets, the order featured hard gold plating (1 µin Au over 120 µin Ni), yellow coverlay on the top side only, and white silkscreen. Two 0.1 mm PI stiffeners were specified. Minimum holes were 0.3 mm with 6 mil line/space, and laser forming completed the outline. The 15-day schedule included full flying-probe testing.
DFM review addressed thickness targets and plating details. Because the board was intended for the customer's own SMT process, single-piece shipment was proposed instead of panelized delivery. The original 0.1 mm PI stiffener could not achieve the required 0.3 mm total thickness at the reinforced ends; thickness was therefore controlled to 0.30 ± 0.03 mm at the finger end and 0.30 ± 0.05 mm at the connector end. Hard gold was required, yet the data contained two independent plating points; one point was processed as hard gold while a lead wire was added for the second point to complete the plating circuit.
Confirmed thickness control, single-piece shipment, and plating lead adjustments were implemented prior to production. The thin flex boards achieved consistent hard gold coverage and reliable stiffener adhesion within the planned timeline. Full electrical test reports and quality certificates accompanied the shipment, confirming the panels met the revised mechanical and electrical requirements.
Single layer flex circuits deliver cost-effective dynamic interconnection. They consist of copper foil bonded to polyimide or PET film substrates.
See how a 0.1 mm PI stiffener could not reach the requested 0.30 mm total thickness on a long single-layer FPC—and the zone-specific tolerances plus hard-gold lead fix that kept the process stable.
| Order ID | PCB Type | Layers | Dimensions | Solder Mask | Surface Finish | Quantity | Action |
|---|---|---|---|---|---|---|---|
| FPC-20260403-077 | Flexible PCB | 1 | 25.83 x 65.93 | Yellow | ENIG (Immersion Gold) | 25 | View detail |