View stb80nf55-06 datasheet:

STB80NF55-06 STP80NF55-06 STP80NF55-06FP N-CHANNEL 55V - 0.005 ? - 80A TO-220/TO-220FP/D2PAK STripFET™ II POWER MOSFET TYPE VDSS RDS(on) ID STB80NF55-06 55 V <0.0065 ? 80 A STP80NF55-06 55 V <0.0065 ? 80 A STP80NF55-06FP 55 V <0.0065 ? 60 A TYPICAL RDS(on) = 0.005 ? 3 3 1 EXCEPTIONAL dv/dt CAPABILITY 2 1 100% AVALANCHE TESTED D2PAK TO-220FP TO-263 APPLICATION ORIENTED (Suffix “T4”) CHARACTERIZATION SURFACE-MOUNTING D2PAK (TO-263) 3 2 POWER PACKAGE IN TUBE (NO SUFFIX) OR 1 IN TAPE & REEL (SUFFIX “T4”) TO-220 DESCRIPTION This Power MOSFET is the latest development of INTERNAL SCHEMATIC DIAGRAM STMicroelectronis unique "Single Feature Size™" strip-based process. The resulting transistor shows extremely high packing density for low on- resistance, rugg