Popular transistors.

IRF540 MOSFET transistor.
Pinout. Datasheet.

Package: TO-220, 1-gate, 2-drain, 3 - sourse, 4-drain.
Type of IRF540 transistor: MOSFET
Type of control channel: N - Channel
Maximum power dissipation (PD):100W
Maximum drain-source voltage (VDSS): 100V
Maximum gate-source voltage (VGS): ±20V
Maximum continuous drain current (ID): 23A
Maximum pulsed drain current (IDM):92A
Maximum junction temperature (Tj): 175C
Rise Time of IRF3205 transistor (tR):44nS
Input Capacitance (Ciss):890pF
Output Capacitance (Coss):139pF
Maximum drain-source on-state resistance (RDS): 0.077 Ohm
Forward Transconductance(gfs):15,5(typ.)