This part is a kind of semiconductor called F3NK80Z.

Function of this product has STF3NK80Z.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

STP3NK80Z - STF3NK80Z STD3NK80Z - STD3NK80Z-1 N-channel 800V - 3.8Ω - 2.5A - TO-220/TO-220FP/DPAK/IPAK Zener-protected SuperMESH™ Power MOSFET General features Type STP3NK80Z STF3NK80Z STD3NK80Z STD3NK80Z-1 ■ ■ ■ ■ ■ VDSS (@Tjmax) 800 V 800 V 800 V 800 V RDS(on) < 4.5 Ω < 4.5 Ω < 4.5 Ω < 4.5 Ω ID 2.5 A 2.5 A 2.5 A 2.5 A 3 1 1 3 2 3 1 2 TO-220 TO-220FP Extremely high dv/dt capability 100% avalanche tested Gate charge minimized Very low intrinsic capacitances Very good manufacturing repeatibility DPAK IPAK Internal schematic diagram Description The SuperMESH™ series is obtained through an extreme optimization of ST’s well established strip-based PowerMESH™ layout. In addition to pushing on-resistance significantly down, special care i [ ... ]

F3NK80Z PDF Datasheet Download