Single-Layer Flexible PCB Design
Budget: $10 – $30 AUD
KiCad Files Only for Simple Single-Layer Flex Cable Replication – $15–$30 Budget
Board Type: Single-layer flexible PCB (FPC), T-shaped.
Material: Polyimide (PI) base, ~0.1–0.15 mm thick.
Overall Shape:
Tail/connector finger: 4.5 mm wide × 17 mm long.
Button/dome area: 8 mm wide × 44 mm long (crossbar of T).
Connector Finger Details:
6 pins/tracks.
Trace width: 0.4 mm each.
Gap between traces: 0.4 mm (0.8 mm pitch center-to-center).
Total copper connector span: 5.4 mm.
Edge margins: 0.5 mm from outer traces to finger edge.
Exposed copper fingers (no coverlay).
Dome Button Pads:
5 oval/rectangular pads (match photo shapes/sizes).
Evenly spaced along 44 mm length, centered in 8 mm width.
Special Features:
1 mm diameter circular cutout/hole, positioned between two dome buttons (exact spot per photos).
Routing:
6 direct traces (0.4 mm width) from connector pins to dome pads (simple straight/fan-out).
One common ground pin shared across domes.
Coverlay:
Openings over all 5 dome pads and connector fingers.
Cover everywhere else.
Stiffener:
Location: Connector tail area only.
Shape: Rectangle, 5.4 mm wide × 10 mm long.
Material: Polyimide.
Thickness: 0.2 mm.
Side: Opposite to copper routing.
Indicate via dedicated layer/outline + note in file (e.g., "PI stiffener 0.2 mm thick").
Board Type: Single-layer flexible PCB (FPC), T-shaped.
Material: Polyimide (PI) base, ~0.1–0.15 mm thick.
Overall Shape:
Tail/connector finger: 4.5 mm wide × 17 mm long.
Button/dome area: 8 mm wide × 44 mm long (crossbar of T).
Connector Finger Details:
6 pins/tracks.
Trace width: 0.4 mm each.
Gap between traces: 0.4 mm (0.8 mm pitch center-to-center).
Total copper connector span: 5.4 mm.
Edge margins: 0.5 mm from outer traces to finger edge.
Exposed copper fingers (no coverlay).
Dome Button Pads:
5 oval/rectangular pads (match photo shapes/sizes).
Evenly spaced along 44 mm length, centered in 8 mm width.
Special Features:
1 mm diameter circular cutout/hole, positioned between two dome buttons (exact spot per photos).
Routing:
6 direct traces (0.4 mm width) from connector pins to dome pads (simple straight/fan-out).
One common ground pin shared across domes.
Coverlay:
Openings over all 5 dome pads and connector fingers.
Cover everywhere else.
Stiffener:
Location: Connector tail area only.
Shape: Rectangle, 5.4 mm wide × 10 mm long.
Material: Polyimide.
Thickness: 0.2 mm.
Side: Opposite to copper routing.
Indicate via dedicated layer/outline + note in file (e.g., "PI stiffener 0.2 mm thick").