This part is a kind of semiconductor called BD946.

Function of this product has Silicon PNP Power Transistor.

Manufacturers : INCHANGE

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon PNP Power Transistor isc Product Specification BD944/946/948 DESCRIPTION ·DC Current Gain- : hFE= 85(Min)@ IC= -500mA ·Complement to Type BD943/945/947 APPLICATIONS ·Designed for use in audio output stages and general purpose amplifier applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE BD944 -22 VCBO Collector-Base Voltage BD946 -32 BD948 -45 BD944 -22 VCEO Collector-Emitter Voltage BD946 -32 BD948 -45 VEBO Emitter-Base Voltage -5 IC Collector Current-Continuous -5 ICM Collector Current-Peak -8 IBB Base Current-Continuous PC Collector Power Dissipation @ TC=25℃ TJ Junction Temperature -1 40 150 Tstg Storage Temperature Range -65~150 UNIT V V V A A A W ℃ ℃ THERMAL CHARACTERISTICS SYMBOL P [ ... ]

BD946 PDF Datasheet Download