This part is a kind of semiconductor called 10N80.

Function of this product has N-Channel Mosfet Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc N-Channel MOSFET Transistor isc Product Specification 10N80 ·FEATURES ·Drain Current ID= 10A@ TC=25℃ ·Drain Source Voltage- : VDSS= 800V(Min) ·Static Drain-Source On-Resistance : RDS(on) = 0.95Ω(Max) ·Avalanche Energy Specified ·Fast Switching ·Simple Drive Requirements ·APPLICATIONS ·Switch mode power supply. ·ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VDSS VGS Drain-Source Voltage Gate-Source Voltage-Continuous 800 ±30 V V ID Drain Current-Continuous 10 A IDM Drain Current-Single Plused 40 A PD Total Dissipation @TC=25℃ 280 W Tj Max. Operating Junction Temperature 150 ℃ Tstg Storage Temperature -55~150 ℃ ·THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rth j-c Rth j-a Thermal Resistance, Junc [ ... ]

10N80 PDF Datasheet Download