This part is a kind of semiconductor called S9013.

Function of this product has 1W Output Amplifier of Potable Radios in Class B Push-pull Operation..

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

SS9013 SS9013 1W Output Amplifier of Potable Radios in Class B Push-pull Operation. • • • • High total power dissipation. (PT=625mW) High Collector Current. (IC=500mA) Complementary to SS9012 Excellent hFE linearity. 1 TO-92 1. Emitter 2. Base 3. Collector NPN Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol VCBO VCEO VEBO IC PC TJ TSTG Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Collector Power Dissipation Junction Temperature Storage Temperature Ratings 40 20 5 500 625 150 -55 ~ 150 Units V V V mA mW °C °C Electrical Characteristics Ta=25°C unless otherwise noted Symbol BVCBO BVCEO BVEBO ICBO IEBO hFE1 hFE2 VCE (sat) VBE (sat) VBE (on) Parameter Collector-Base Breakdown Volta [ ... ]

S9013 PDF Datasheet Download