This part is a kind of semiconductor called 8N80C.

Function of this product has FQP8N80C.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

FQP8N80C / FQPF8N80C / FQPF8N80CYDTU N-Channel QFET® MOSFET December 2013 FQP8N80C / FQPF8N80C / FQPF8N80CYDTU N-Channel QFET® MOSFET 800 V, 8.0 A, 1.55 Ω Description Features This N-Channel enhancement mode power MOSFET is produced using Fairchild Semiconductor’s proprietary planar stripe and DMOS technology. This advanced MOSFET technology has been especially tailored to reduce on-state resistance, and to provide superior switching performance and high avalanche energy strength. These devices are suitable for switched mode power supplies, active power factor correction (PFC), and electronic lamp ballasts. • 8.0 A, 800 V, RDS(on) = 1.55 Ω (Max.) @ VGS = 10 V, ID = 4.0 A • Low Gate Charge (Typ. 35 nC) • Low Crss (Typ. 13 pF) • 100% Avalanche Tested D D G D S TO-2 [ ... ]

8N80C PDF Datasheet Download