4 layers

Boards in 1 GitHub repository, designed in KiCad, that use the FFB3904 by onsemi (-55℃~+150℃ 100 200mA 250MHz 300mW 40V NPN SC-88(SC-70-6) Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the FFB3904’s symbol, footprint and pinout are on its own page.
