View std3na50 datasheet:

STD3NA50 N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTOR TYPE V R I DSS DS(on) D STD3NA50 500 V < 3 ? 2.7 A TYPICAL R = 2.4 ? DS(on) AVALANCHE RUGGED TECHNOLOGY 100% AVALANCHE TESTED REPETITIVE AVALANCHE DATA AT 100oC 3 APPLICATION ORIENTED 3 2 CHARACTERIZATION 1 1 THROUGH-HOLE IPAK (TO-251) POWER PACKAGE IN TUBE (SUFFIX �-1�) SURFACE-MOUNTING DPAK (TO-252) IPAK DPAK POWER PACKAGE IN TAPE & REEL TO-251 TO-252 (SUFFIX �T4�) (Suffix �-1�) (Suffix �T4�) APPLICATIONS HIGH SPEED SWITCHING UNINTERRUPTIBLE POWER SUPPLY (UPS) INTERNAL SCHEMATIC DIAGRAM MOTOR CONTROL, AUDIO AMPLIFIERS INDUSTRIAL ACTUATORS DC-DC & DC-AC CONVERTERS FOR TELECOM, INDUSTRIAL AND CONSUMER ENVIRONMENT PARTICULARLY SUITABLE FOR ELECTRONIC FLUORESCENT LAMP BALLASTS ABSOLU