This part is a kind of semiconductor called 4N80.

Function of this product has N-CHANNEL POWER MOSFET.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 4N80 Power MOSFET 4.0A, 800V N-CHANNEL POWER MOSFET „ DESCRIPTION The UTC 4N80 is a N-channel mode power MOSFET using UTC’s advanced technology to provide costomers planar stripe and DMOS technology. This technology is specialized in allowing a minimum on-state resistance, and superior switching performance. It also can withstand high energy pulse in the avalanche and commutation mode. The UTC 4N80 is universally applied in high efficiency switch mode power supply. „ FEATURES * RDS(on)=3.0Ω @VGS =10V * High switching speed * Improved dv/dt capability * 100% avalanche tested „ SYMBOL 2.Drain 11 TO-251 TO-220F 11 TO-262 TO-220F1 1 TO-220F2 1 TO-220 1 TO-252 1.Gate 3.Source „ ORDERING INFORMATION Note: Ordering Number Lead Free Halogen [ ... ]

4N80 PDF Datasheet Download