A replacement capsense PCB for the IBM 3277 beam spring keyboards, compatible with the Xwhatsit and CommonSense controllers.
See more here: https://deskthority.net/workshop-f7/xwhatsit-cs-compatible-ibm-3277-pcb-t16867.html
78-Key: 418.50 x 142.25 mm
66-Key and variants: 351.75 x 142.25 mm
PCB Specifications (as used on EasyEDA):
- Layers: 2
- PCB Dimension Width (mm): 142.25
- PCB Dimension Length (mm): 418.50 (78-key) or 351.75 (66-key variants)
- PCB Quantity: X
- PCB Thickness: 1.2mm
- PCB Color: Green
- Surface Finish: HASL (with lead)
- Copper Weight: 1 oz.
- Material Details: FR4 - Standard Tg 140C
- Gold Fingers: No