View stp5n30l datasheet:

STP5N30L STP5N30LFI N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR TYPE VDSS RDS(on) ID STP5N30L 300 V < 1.4 ? 5 A STP5N30LFI 300 V < 1.4 ? 3.5 A TYPICAL R = 1.25 ? DS(on) AVALANCHE RUGGED TECHNOLOGY 100% AVALANCHE TESTED REPETITIVE AVALANCHE DATA AT 100oC 3 3 APPLICATION ORIENTED 2 2 1 1 CHARACTERIZATION APPLICATIONS TO-220 ISOWATT220 HIGH SPEED SWITCHING SWITCH MODE POWER SUPPLIES (SMPS) CHOPPER REGULATORS, CONVERTERS, MOTOR CONTROL, LIGHTING FOR INDUSTRIAL AND CONSUMER ENVIRONMENT INTERNAL SCHEMATIC DIAGRAM PARTICULARLY SUITABLE FOR ELECTRONIC FLUORESCENT LAMP BALLASTS ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit STP5N30L STP5N30LFI VDS Drain-source Voltage (V = 0) 300 V GS VDGR Drain- gate Voltage (R = 20 k?)300 V GS VGS Gate-