This part is a kind of semiconductor called 13009L.

Function of this product has KSE13009L.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

KSE13009L KSE13009L High Voltage Switch Mode Applications • High Speed Switching • Suitable for Switching Regulator and Motor Control 1 TO-3P 1.Base 2.Collector 3.Emitter NPN Silicon Transistor Absolute Maximum Ratings TC=25°C unless otherwise noted Symbol VCBO V CEO VEBO IC ICP IB PC TJ TSTG Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current (DC) Collector Current (Pulse) Base Current Collector Dissipation (TC=25°C) Junction Temperature Storage Temperature Value 700 400 9 12 24 6 130 150 - 65 ~ 150 Units V V V A A A W °C °C Electrical Characteristics TC=25°C unless otherwise noted Symbol VCEO(sus) IEBO hFE VCE(sat) Parameter Collector-Emitter Sustaining Voltage Emitter Cut-off Current DC Current Gain Collector-Emitter Saturatio [ ... ]

13009L PDF Datasheet Download