View irfb20n50k datasheet:

PD - 94418 IRFB20N50K SMPS MOSFET HEXFET� Power MOSFET Applications VDSS RDS(on) typ. ID l Switch Mode Power Supply (SMPS) l Uninterruptible Power Supply 500V 0.21? 20A l High Speed Power Switching l Hard Switched and High Frequency Circuits Benefits l Low Gate Charge Qg results in Simple Drive Requirement l Improved Gate, Avalanche and Dynamicdv/dt Ruggedness l Fully Characterized Capacitance and Avalanche Voltage TO-220AB and Current l Low RDS(on) Absolute Maximum Ratings Parameter Max. Units ID @ TC = 25�C Continuous Drain Current, VGS @ 10V 20 ID @ TC = 100�C Continuous Drain Current, VGS @ 10V 12 A IDM Pulsed Drain Current 80 PD @TC = 25�C Power Dissipation 280 W Linear Derating Factor 2.2 W/�C VGS Gate-to-Source Voltage � 30 V dv/dt Peak Diode Recovery dv/