View stb10na40 datasheet:

STB10NA40 N - CHANNEL ENHANCEMENT MODE FAST POWER MOS TRANSISTOR TYPE V R I DSS DS(on ) D STB10NA40 400 V < 0.55 ? 10 A n TYPICAL RDS(on) = 0.46 ? n ± 30V GATE TO SOURCE VOLTAGE RATING n 100% AVALANCHE TESTED n REPETITIVE AVALANCHE DATA AT 100oC n LOW INTRINSIC CAPACITANCES n GATE CHARGE MINIMIZED 3 3 2 n REDUCED THRESHOLD VOLTAGE SPREAD 1 1 n THROUGH-HOLE I2PAK (TO-262) POWER PACKAGE IN TUBE (SUFFIX ”-1”) I2PAK D2PAK n SURFACE-MOUNTING D2PACK (TO-263) TO-262 TO-263 POWER PACKAGE IN TUBE (NO SUFFIX) OR IN TAPE & REEL (SUFFIX ”T4”) APPLICATIONS n HIGH CURRENT, HIGH SPEED SWITCHING n SWITCH MODE POWER SUPPLIES (SMPS) INTERNAL SCHEMATIC DIAGRAM n DC-AC CONVERTERS FOR WELDING EQUIPMENT AND UNINTERRUPTIBLE POWER SUPPLIES AND MOTOR DRIVE ABSOLUTE MAXIMUM RATINGS Sym