This part is a kind of semiconductor called IRF3205.

Function of this product has N-Channel Power MOSFET.

Manufacturers : nELL

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTOR IRF3205 Series N-Channel Power MOSFET (110A, 55Volts) RoHS RoHS Nell High Power Products DESCRIPTION The Nell IRF3205 is a three-terminal silicon device with current conduction capability of 110A, fast switching speed, low on-state resistance, breakdown voltage rating of 55V, and max. threshold voltage of 4 volts. They are designed as an extremely efficient and reliable device for use in a wide variety of applications. These transistors can be operated directly from integrated circuits. D D G G D S TO-220AB (IRF3205A) D S FEATURES RDS(ON) = 0.010Ω @ VGS = 10V Ultra low gate charge(150nC max.) Low reverse transfer capacitance (C RSS = 210pF typical) Fast switching capability 100% avalanche energy specified Improved dv/dt capability 175°C operation temperature TO-26 [ ... ]

IRF3205 PDF Datasheet Download