Triode/MOS tube/transistor/module

2SD1805 is a bipolar transistor, 20V, 5A, low saturation voltage, NPN single TP/TP-FA, for high voltage switching applications.

This family of digital transistors is intended to replace a single device and its external resistor bias network. The bias resistor transistor (BRT) consists of a transistor with a monolithic bias network consisting of two resistors; a series base resistor and a base-emitter resistor. The BRT integrates these components into one device, eliminating the need for these external components. Using BRT can reduce system cost and save board space.