NPN Transistor and N-Channel MOSFET side by side with a schematic diagram of the MOSFET. G is the gate (equivalent of base), D is the drain (collector) and S is the source (emitter).
NPN Transistor and N-Channel MOSFET side by side. The physical packages of the transistor and MOSFET are nearly identical. The pin out of the N-channel MOSFET is comparable to the transistor, where G of the MOSFET is the gate (equivalent of base of the transistor), D is the drain (equivalent of the collector) and S is the source (equivalent of the emitter).