This part is a kind of semiconductor called 2SA1024.

Function of this product has PNP Silicon Epitaxial Planar Transistor.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

2SA1024 PNP Silicon Epitaxial Planar Transistor for high voltage applications. The transistor is subdivided into two groups, O and Y according to its DC current gain. On special request, these transistors can be manufactured in different pin configurations. 1. Emitter 2. Collector 3. Base TO-92 Plastic Package Absolute Maximum Ratings (Ta = 25 C) O Parameter Collector Base Voltage Collector Emitter Voltage Emitter Base Voltage Collector Current Emitter Current Power Dissipation Junction Temperature Storage Temperature Range Symbol -VCBO -VCEO -VEBO -IC IE Ptot Tj Tstg Value 150 150 5 50 50 625 150 - 55 to + 150 Unit V V V mA mA mW O C C O Characteristics at Ta = 25 C O Parameter DC Current Gain at -VCE = 5 V, -IC = 10 mA Collector Base Cutoff Current at -VCB = 150 V Emitter Bas [ ... ]

2SA1024 PDF Datasheet Download