This part is a kind of semiconductor called IRF260.
Function of this product has N-Channel Power MOSFET.
Manufacturers : Nell
Image and pinout :

Some of the text within the PDF file :
SEMICONDUCTOR IRF260 Series N-Channel Power MOSFET 50A, 200Volts RoHS RoHS Nell High Power Products DESCRIPTION D The Nell IRF260 is a three-terminal silicon device with current conduction capability of 50A, fast switching speed, low on-state resistance, breakdown voltage rating of 200V, and max. threshold voltage of 4 volts. They are designed for use in applications such as switched mode power supplies, DC to DC converters, motor control circuits, UPS and general purpose switching applications. G D S TO-3PB (IRF260B) D (Drain) G D S TO-247AB (IRF260C) FEATURES RDS(ON) = 0.055Ω @ VGS = 10V Ultra low gate charge(230nC Max.) Low reverse transfer capacitance (C RSS = 310pF typical) Fast switching capability 100% avalanche energy specified Improved dv/dt capability 150°C operatio [ ... ]
IRF260 PDF Datasheet Download
