This part is a kind of semiconductor called 2SA1301.

Function of this product has PNP PLANAR SILICON TRANSISTOR(AUDIO POWER AMPLIFIER DC TO DC CONVERTER).

Manufacturers : Wing Shing Computer Components

Image and pinout :

Some of the text within the PDF file :

2SA1301 AUDIO POWER AMPLIFIER DC TO DC CONVERTER PNP PLANAR SILICON TRANSISTOR 2-21F1A ! ! ! High Current Capability High Power Dissipation Complementary to 2SC3280 ABSOLUTE MAXIMUM RATING (Ta=25°C) Characteristic Collector-Base Voltage Collector-Emitter Voltage Emitter-Base voltage Collector Current (DC) Collector Dissipation Junction Temperature Storage Temperature Symbol VCBO VCEO VEBO IC PC Tj Tstg Rating -160 -160 -6 -12 120 150 -55~150 Unit V V V A W °C °C ELECTRICAL CHARACTERISTICS (Ta=25°C) Characterristic Collector Base Breakdown Voltage Collector Emitter Breakdown Voltage Emitter Base Breakdown Voltage Collector Cutoff Current Emitter Cutoff Current *DC Current Gain DC Current Gain Collector- Emitter Saturation Voltage Symbol BVCBO BVCEO BVEBO ICBO IEBO hFE1 hFE2 V [ ... ]

2SA1301 PDF Datasheet Download