N-Channel MOSFET Transistor, 20 A, 600 V, 3-Pin TO-3PN Toshiba 2SK3906(Q)

MOSFETs - N-Channel

The Metal–Oxide–Semiconductor Field-Effect Transistor or MOSFET is a transistor used for amplifying or switching electronic signals.
A voltage on the oxide-insulated Gate electrode can induce a conducting channel between the two other contacts called Source and Drain. The channel can be of N-type or P-type.