Boards using the TIP31A

Boards in 2 GitHub repositories, designed in KiCad, that use the TIP31A by onsemi (1 NPN 1.2V 25 2W 300uA 3A 3MHz 5V 60V NPN Standalone TO-220-3 Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the TIP31A’s symbol, footprint and pinout are on its own page.