View irfb42n20d datasheet:

PD- 94208 SMPS MOSFET IRFB42N20D HEXFET� Power MOSFET Applications VDSS RDS(on) max ID High frequency DC-DC converters 200V 0.055? 44A Motor Control Uninterrutible Power Supplies Benefits Low Gate-to-Drain Charge to Reduce Switching Losses Fully Characterized Capacitance Including Effective COSS to Simplify Design, (See App. Note AN1001) Fully Characterized Avalanche Voltage TO-220AB and Current Absolute Maximum Ratings Parameter Max. Units ID @ TC = 25�C Continuous Drain Current, VGS @ 10V 44 ID @ TC = 100�C Continuous Drain Current, VGS @ 10V 31 A IDM Pulsed Drain Current 180 PD @TA = 25�C Power Dissipation 2.4 W PD @TC = 25�C Power Dissipation 330 Linear Derating Factor 2.2 W/�C VGS Gate-to-Source Voltage � 30 V dv/dt Peak Diode Recovery dv/dt 2.5 V/ns