This part is a kind of semiconductor called TIP102.

Function of this product has NPN Plastic Medium-Power Silicon Transistors.

Manufacturers : MCC

Image and pinout :

Some of the text within the PDF file :

MCC TM Micro Commercial Components
  omponents 20736 Marilla Street Chatsworth    !"# $ %    !"# Features • Lead Free Finish/RoHS Compliant(Note 1) ("P" Suffix designates RoHS Compliant. See ordering information) • High DC Current Gain : hFE=2500 (Typ) @ IC=4.0Adc • Low Collector-Emitter Saturation Voltage • Monolithic Construction with Built-in Base-Emitter Shunt Resistors • TO-220 Compact package • Epoxy meets UL 94 V-0 flammability rating • Moisure Sensitivity Level 1 Maximum Ratings Symbol Parameter Rating Unit VCEO Collector-Emitter Voltage TIP100 TIP101 TIP102 60 80 100 V VCBO Collector-Base Voltage TIP100 TIP101 60 80 V TIP102 100 VEBO Emitter-Base Voltage 5.0 V IC Collector Current-continuous [ ... ]

TIP102 PDF Datasheet Download