This part is a kind of semiconductor called D1833.

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 2SD1833 DESCRIPTION ·Low Collector Saturation Voltage : VCE(sat)= 1.0V(Max.)@ IC= 4A ·High Collector Power Dissipation ·Good Linearity of hFE ·Wide Area of Safe Operation APPLICATIONS ·Designed for low frequency power amplifier applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) i.cnSYMBOL PARAMETER VALUE UNIT .iscsemVCBO Collector-Base Voltage 100 V VCEO Collector-Emitter Voltage 80 V wwwVEBO Emitter-Base Voltage 5V IC Collector Current-Continuous 7A ICM Collector Current-Pulse Collector Power Dissipation @ Ta=25℃ PC Collector Power Dissipation @ TC=25℃ TJ Junction Temperature 10 A 1.5 W 30 150 ℃ Tstg Storage Temperature Range -55~150 ℃ isc Website：www.iscsemi.cn INCHANG [ ... ]

D1833 PDF Datasheet Download