This part is a kind of semiconductor called 2SC6090.

Function of this product has Silicon NPN Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon NPN Power Transistor isc Product Specification 2SC6090 DESCRIPTION ·Collector-Base Breakdown Voltage- : V(BR)CEO= 1500V (Min) ·High Speed Switching APPLICATIONS ·Designed for Color TV horizontal deflection output applications ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VCBO Collector-Base Voltage 1500 V VCEO Collector-Emitter Voltage 700 V VEBO Emitter-Base Voltage 5V IC Collector Current-Continuous 10 A ICP Collector Current-Pulse Collector Power Dissipation @ Ta=25℃ PC Collector Power Dissipation @ TC=25℃ TJ Junction Temperature 25 A 2 W 35 150 ℃ Tstg Storage Temperature Range -55~150 ℃ isc Website：www.iscsemi.cn INCHANGE Semiconductor isc Silicon NPN Power Transistors isc Product Specification 2SC [ ... ]

2SC6090 PDF Datasheet Download