This part is a kind of semiconductor called TIP142.

Function of this product has 10 AMPERE DARLINGTON COMPLEMENTARY SILICON POWER TRANSISTORS.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by TIP140/D Darlington Complementary Silicon Power Transistors . . . designed for general–purpose amplifier and low frequency switching applications. • High DC Current Gain Min hFE = 1000 @ IC = 5 A, VCE = 4 V • Collector–Emitter Sustaining Voltage @ 30 mA VCEO(sus) = 60 Vdc (Min) TIP140, TIP145 VCEO(sus) = 80 Vdc (Min) TIP141, TIP146 VCEO(sus) = 100 Vdc (Min) TIP142, TIP147 • Monolithic Construction with Built–In Base–Emitter Shunt Resistor MAXIMUM RATINGS Rating ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ [ ... ]

TIP142 PDF Datasheet Download