View stp4nk80z datasheet:

STP4NK80Z - STP4NK80ZFP STD4NK80Z - STD4NK80Z-1 N-CHANNEL 800V - 3? - 3A TO-220/TO-220FP/DPAK/IPAK Zener-Protected SuperMESH™ Power MOSFET TYPE VDSS RDS(on) ID Pw STP4NK80Z 800 V < 3.5 ? 3 A 80 W STP4NK80ZFP 800 V < 3.5 ? 3 A 25 W STD4NK80Z 800 V < 3.5 ? 3 A 80 W STD4NK80Z-1 800 V < 3.5 ? 3 A 80 W 3 3 2 2 TYPICAL RDS(on) = 3 ? 1 1 TO-220 TO-220FP EXTREMELY HIGH dv/dt CAPABILITY 100% AVALANCHE TESTED GATE CHARGE MINIMIZED VERY LOW INTRINSIC CAPACITANCES 3 3 2 VERY GOOD MANUFACTURING 1 1 REPEATIBILITY DPAK IPAK DESCRIPTION The SuperMESH™ series is obtained through an extreme optimization of ST’s well established strip- INTERNAL SCHEMATIC DIAGRAM based PowerMESH™ layout. In addition to pushing on-resistance significantly down, special care is tak- en to