This part is a kind of semiconductor called KSP2222A.
Function of this product has General Purpose Transistor.
Manufacturers : Fairchild Semiconductor
Image and pinout :
Some of the text within the PDF file :
KSP2222A KSP2222A General Purpose Transistor • Collector-Emitter Voltage: VCEO= 40V • Collector Power Dissipation: PC (max)=625mW • Refer KSP2222 for graphs 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 Value 75 40 6 600 625 150 -55 ~ 150 Units V V V mA mW °C °C Electrical Characteristics Ta=25°C unless otherwise noted Symbol BVCBO BVCEO BVEBO ICBO IEBO hFE Parameter Collector-Base Breakdown Voltage Collector Emitter Breakdown Voltage Emitter-Base Breakdown Voltage Collector Cut-off Current Emi [ ... ]