2 layers176 × 55 mm

Nixie clock
jeffkub/nixie-clock
An open source nixie clock with GPS time synchronization.
106 parts2MIT
Boards in 1 GitHub repository, designed in KiCad, that use the FDB14N30TM by onsemi (-55℃~+150℃ 1 N-channel 1.06nF 140W 14A 195pF 25nC@10V 25pF 290mΩ@10V 300V 5V N-Channel ±30V D2PAK MOSFETs ROHS). See how each wires it, with its parts, size, README and files; the FDB14N30TM’s symbol, footprint and pinout are on its own page.

jeffkub/nixie-clock
An open source nixie clock with GPS time synchronization.