Popular transistors.

IRF740 MOSFET transistor.
Pinout. Datasheet.

Package:D2Pak(IRF740S), TO220 (IRF740),T0-262(IRF740L), 1-gate, 2-drain, 3 - sourse, 4-drain.
Type of IRF740 transistor: MOSFET
Type of control channel: N - Channel
Maximum power dissipation (PD):125W
Maximum drain-source voltage (VDSS): 400V
Maximum gate-source voltage (VGS): IRF740 - ±20V,IRF740S,IRF740L- ±30V.
Maximum continuous drain current (ID): 10A
Maximum pulsed drain current (IDM): 40A
Maximum junction temperature (Tj): 150C
Rise Time(tR): 10nS
Input Capacitance (Ciss):1700pF
Output Capacitance (Coss):220pF
Maximum drain-source on-state resistance (RDS): 0.55 Ohm
Forward Transconductance(gfs):5,8(min.)