This part is a kind of semiconductor called D1072.

Function of this product has 2SD1072.

Manufacturers : Fuji Electric

Image and pinout :

Some of the text within the PDF file :

2SD1072 TRIPLE DIFFUSED PLANER TYPE HIGH POWER DARLINGTON HIGH VOLTAGE , SWITCHING FUJI POWER TRANSISTOR Outline Drawings Features High D.C. current gain High reliability TO-220AB Applications Switching regulators DC-DC converter Solid state relay General purpose power amplifiers 1 : Base 2 : Collector 3 : Emitter JEDEC EIAJ TO-220AB SC-46 Equivalent Circuit Schematic Maximum ratings and characteristics Absolute maximum ratings (Tc=25°C unless otherwise specified) Item Collector-Base voltage Collector-Emitter voltage Collector-Emitter voltage Emitter-Base voltage Collector current Base current Collector power disspation Operating junction temperature Storage temperature Symbol VCBO VCEO VCEO(SUS) VEBO IC IB PC Tj Tstg Ratings 450 450 350 20 5 0.3 60 +150 -55 to [ ... ]

D1072 PDF Datasheet Download