4 layers41.5 × 45.2 mm

Boards in 1 GitHub repository, designed in KiCad, that use the G2425S by CND-tek (0℃~+70℃ 1.5kV 1000M 1:1 350uH Single port SMD-24P,15.6x8.5mm Pulse Transformers(LAN) ROHS). See how each wires it, with its parts, size, README and files; the G2425S’s symbol, footprint and pinout are on its own page.
