View std40nf06lz datasheet:

STD40NF06LZ N-CHANNEL 60V - 0.020 ? - 40A DPAK Zener-Protected STripFET™ II POWER MOSFET TYPE VDSS RDS(on) ID STD40NF06LZ 60 V < 25 m? 40 A TYPICAL RDS(on) = 0.020? 100% AVALANCHE TESTED LOW GATE CHARGE LOGIC LEVEL GATE DRIVE 3 SURFACE-MOUNTING DPAK (TO-252) 1 POWER PACKAGE IN TAPE & REEL DPAK (SUFFIX “T4") TO-252 BUILT-IN ZENER DIODES TO IMPROVE ESD (Suffix “T4”) PROTECTION UP TO 2kV DESCRIPTION This Power MOSFET is the latest development of STMicroelectronis unique "Single Feature Size™" INTERNAL SCHEMATIC DIAGRAM strip-based process. The resulting transistor shows extremely high packing density for low on- resistance, rugged avalanche characteristics and less critical alignment steps therefore a remarkable manufacturing reproducibility. APPLICATIONS