This part is a kind of semiconductor called 4NK60ZFP.
Function of this product has STP4NK60ZFP.
Manufacturers : STMicroelectronics
Image and pinout :

Some of the text within the PDF file :
STP4NK60Z-STP4NK60ZFP-STB4NK60Z-1 STB4NK60Z-STD4NK60Z-STD4NK60Z-1 N-CHANNEL600V-1.76Ω-4ATO-220/FP/DPAK/IPAK/D2PAK/I2PAK Zener-Protected SuperMESH™Power MOSFET TYPE STP4NK60Z STP4NK60ZFP STB4NK60Z STB4NK60Z-1 STD4NK60Z STD4NK60Z-1 s s s s s s VDSS 600 600 600 600 600 600 V V V V V V RDS(on) <2Ω <2Ω <2Ω < 2Ω <2Ω <2Ω ID 4 4 4 4 4 4 A A A A A A Pw 70 W 25 W 70 W 70 W 70 W 70 W 3 1 D2PAK TO-220 3 1 2 TYPICAL RDS(on) = 1.76 Ω EXTREMELY HIGH dv/dt CAPABILITY 100% AVALANCHE TESTED GATE CHARGE MINIMIZED VERY LOW INTRINSIC CAPACITANCES VERY GOOD MANUFACTURING REPEATIBILITY TO-220FP 3 1 3 12 1 3 2 DPAK I2PAK IPAK DESCRIPTION The SuperMESH™ series is obtained through an extreme optimization of ST’s well established stripbased PowerMESH™ layou [ ... ]
4NK60ZFP PDF Datasheet Download
