This part is a kind of semiconductor called SS8050.

Function of this product has Silicon NPN Power Transistor.

Manufacturers : INCHANGE

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon NPN Power Transistor isc Product Specification SS8050 DESCRIPTION ·Low Saturation Voltage- : VCE(sat)= 0.5V(Max)@ IC =0.8A APPLICATIONS ·Designed for high-speed switching and Amplifier applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VCBO VCEO VEBO Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage IC Collector Current-Continuous PC Collector Power Dissipation @TC=25℃ TJ Junction Temperature Tstg Storage Temperature VALUE 40 25 5 1.5 300 150 -55~150 UNIT V V V A mW ℃ ℃ isc website：www.iscsemi.com 1 isc & iscsemi is registered trademark INCHANGE Semiconductor isc Silicon NPN Power Transistor isc Product Specification SS8050 ELECTRICAL CHARACTERISTICS TC=25℃ unless otherwise specified SYMBOL [ ... ]

SS8050 PDF Datasheet Download