This part is a kind of semiconductor called 7N60B.
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 7N60B ·FEATURES ·Drain Current –ID= 7.4A@ TC=25℃ ·Drain Source Voltage- : VDSS= 600V(Min) ·Static Drain-Source On-Resistance : RDS(on) = 1.2Ω(Max) ·Avalanche Energy Specified ·Fast Switching ·Simple Drive Requirements ·DESCRITION ·Designed for high efficiency switch mode power supply. ·ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VDSS Drain-Source Voltage 600 V VGS Gate-Source Voltage-Continuous ±30 V ID Drain Current-Continuous 7.4 A IDM Drain Current-Single Plused 29.6 A PD Total Dissipation @TC=25℃ 142 W Tj Max. Operating Junction Temperature 150 ℃ Tstg Storage Temperature -55~150 ℃ ·THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rth j- [ ... ]
7N60B PDF Datasheet Download
