This part is a kind of semiconductor called BD134.

Function of this product has Silicon PNP Power Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon PNP Power Transistor isc Product Specification BD134 DESCRIPTION ·DC Current Gain- : hFE= 40(Min)@ IC= -0.15A ·Collector-Emitter Sustaining Voltage - : VCEO(SUS)= -45V(Min) APPLICATIONS ·Designed for use in audio amplifiers and drivers utilizing complementary or quasi complementary circuits. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VCBO Collector-Base Voltage -45 V VCEO Collector-Emitter Voltage -45 V VEBO Emitter-Base Voltage -5 V IC Collector Current-Continuous -1.5 A IB Base Current-Continuous PC Collector Power Dissipation @ TC=25℃ TJ Junction Temperature -0.5 A 13 W 150 ℃ Tstg Storage Temperature Range -55~150 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth j-c Thermal Resistance,Junction t [ ... ]

BD134 PDF Datasheet Download