This part is a kind of semiconductor called 2N3546.

Function of this product has SWITCHING TRANSISTOR.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

2N3546 CASE 22-03, STYLE 1 TO-18 (TO-206AA) SWITCHING TRANSISTOR PNP SILICON MAXIMUM RATINGS Rating Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage DC Collector Current @Total Device Dissipation Ta = 25°C Derate above 25°C @Total Device Dissipation Tq = 25°C Derate above 25°C Operating and Storage Temperature Temperature Range Symbol vCEO . vCBO v EBO 'C pd Pd TJ- Tstg Value 12 15 4.5 200 0.36 2.06 1.2 6.9 - 65 to + 200 Unit Vdc Vdc Vdc mAdc Watt mW/°C Watts mwrc °C THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient Symbol R &JC R 6UA Max 0.15 0.49 Unit °C/W °c/w ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted.) OFF CHARACTERISTICS Characteristic Collector-Emitter Breakd [ ... ]

2N3546 PDF Datasheet Download