This part is a kind of semiconductor called 2N6520.
Function of this product has PNP Epitaxial Silicon Transistor.
Manufacturers : Fairchild Semiconductor
Image and pinout :

Some of the text within the PDF file :
2N6520 2N6520 High Voltage Transistor • Collector-Emitter Voltage: VCEO= -350V • Collector Dissipation: PC (max)=625mW • Complement to 2N6517 1 TO-92 PNP Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol VCBO VCEO VEBO IC IB PC TJ TSTG Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Base Current Collector Power Dissipation Derate above 25 Junction Temperature Storage Temperature 1. Emitter 2. Base 3. Collector Value -350 -350 -5 -500 -250 0.625 5 50 -55 ~ 150 Units V V V mA mA W mW/°C °C °C Electrical Characteristics Ta=25°C unless otherwise noted Symbol BVCBO BVCEO BVEBO ICBO IEBO hFE Parameter Collector-Base Breakdown Voltage * Collector-Emitter Breakdown Voltage Emitter-Base Bre [ ... ]
2N6520 PDF Datasheet Download
