2 layers100 × 99.9 mm

Boards in 1 GitHub repository, designed in KiCad, that use the BD250 by SPTECH (1 PNP 125W 25 25A 45V 4V 5V 700uA PNP Standalone TO-3PN Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the BD250’s symbol, footprint and pinout are on its own page.
