2 layers67.1 × 48.7 mm

Boards in 1 GitHub repository, designed in KiCad, that use the BD907 by SPTECH (-65℃~+150℃ 15A 3MHz 60V 90W TO-220C Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the BD907’s symbol, footprint and pinout are on its own page.
