This part is a kind of semiconductor called IRF3205SPBF.
Function of this product has Power MOSFET.
Manufacturers : International Rectifier
Image and pinout :

Some of the text within the PDF file :
PD - 95106 IRF3205SPbF IRF3205LPbF l l l l l l l Advanced Process Technology Ultra Low On-Resistance Dynamic dv/dt Rating 175°C Operating Temperature Fast Switching Fully Avalanche Rated Lead-Free HEXFET® Power MOSFET D VDSS = 55V RDS(on) = 8.0mΩ G S ID = 110A Description Advanced HEXFET® Power MOSFETs from International Rectifier utilize advanced processing techniques to achieve extremely low onresistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET power MOSFETs are well known for, provides the designer with an extremely efficient and reliable device for use in a wide variety of applications. The D2 Pak is a surface mount power package capable of accommodating die sizes up to HEX-4. It [ ... ]
IRF3205SPBF PDF Datasheet Download
