This part is a kind of semiconductor called 2SD1270.

Function of this product has SILICON POWER TRANSISTOR.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SD1270 DESCRIPTION ·With TO-220Fa package ·Low collector saturation voltage ·Large collector current IC ·Complement to type 2SB945 APPLICATIONS ·For power switching applications PINNING PIN 1 2 3 DESCRIPTION Base Collector Fig.1 simplified outline (TO-220Fa) and symbol Emitter ABSOLUTE MAXIMUM RATINGS AT Ta=25 SYMBOL VCBO VCEO VEBO IC ICM PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current (DC) Collector current-peak TC=25 PC Collector power dissipation Ta=25 Tj Tstg Junction temperature Storage temperature 2 150 -55~150 CONDITIONS Open emitter Open base Open collector VALUE 130 80 7 5 10 40 W UNIT V V V A A SavantIC Semiconductor Produc [ ... ]

2SD1270 PDF Datasheet Download