This part is a kind of semiconductor called 2SC3720.
Function of this product has Power Transistor.
Manufacturers : Inchange Semiconductor
Image and pinout :
Some of the text within the PDF file :
INCHANGE Semiconductor isc Product Specification isc Silicon NPN Power Transistor 2SC3720 DESCRIPTION ·High Collector-Emitter Breakdown Voltage: V(BR)CEO= 800V (Min) ·High Switching Speed ·Wide Area of Safe Operation APPLICATIONS ·Designed for high speed switching and horizontal deflection output applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VCBO Collector-Base Voltage VCEO Collector-Emitter Voltage VEBO Emitter-Base Voltage w w s c s i . w MAX 1200 800 7 10 15 5 UNIT V n c . i m e V V IC Collector Current-Continuous A ICM Collector Current-Peak A IB B Base Current-Continuous Collector Power Dissipation @TC=25℃ Junction Temperature A PC 200 W Tj 175 ℃ Tstg Storage Temperature Range -65~175 ℃ isc Websi [ ... ]