4 layers

Boards in 1 GitHub repository, designed in KiCad, that use the SA72SB0 by Bourns (1 25A 72℃ 9V Mechanical Over temperature protection ±5℃ SMD-4P,5.4x3.2mm Thermostat Switches ROHS). See how each wires it, with its parts, size, README and files; the SA72SB0’s symbol, footprint and pinout are on its own page.
