View stp6nk90z datasheet:

STP6NK90Z - STP6NK90ZFP STB6NK90Z N-CHANNEL 900V - 1.56? - 5.8A TO-220/TO-220FP/D2PAK Zener-Protected SuperMESH™Power MOSFET TYPE VDSS RDS(on) ID Pw STP6NK90Z 900 V <2? 5.8 A 140 W STP6NK90ZFP 900 V <2? 5.8 A 30 W STB6NK90Z 900 V <2? 5.8 A 140 W TYPICAL RDS(on) = 1.56 ? 3 2 EXTREMELY HIGH dv/dt CAPABILITY 1 100% AVALANCHE TESTED GATE CHARGE MINIMIZED TO-220 TO-220FP VERY LOW INTRINSIC CAPACITANCES VERY GOOD MANUFACTURING 3 1 REPEATIBILITY D2PAK DESCRIPTION The SuperMESH™ series is obtained through an extreme optimization of ST’s well established strip- based PowerMESH™ layout. In addition to pushing INTERNAL SCHEMATIC DIAGRAM on-resistance significantly down, special care is tak- en to ensure a very good dv/dt capability for the most demanding applications.