This part is a kind of semiconductor called SMK0965F.

Function of this product has Advanced N-Ch Power MOSFET.

Manufacturers : KODENSHI KOREA

Image and pinout :

Some of the text within the PDF file :

SMK0965F Advanced N-Ch Power MOSFET SWITCHING REGULATOR APPLICATIONS Features     High Voltage : BVDSS=650V(Min.) Low Crss : Crss=16pF(Typ.) Low gate charge : Qg=35nC(Typ.) Low RDS(on) : RDS(on)=0.85Ω(Max.) G Package Code TO-220F-3L TO-220F-3L GD S TO-220F-3L PIN Connection D Ordering Information Type No. SMK0965F SMK0965F (HF) Marking SMK0965 SMK0965 S * SMK0965F : Pb Free Product * SMK0965F (HF) : Halogen Free Product Marking Diagram Column 1 : Manufacturer AUK AUK GFYMDD YMDD Δ SMK0965 SDB20D45 Column 2 : Production Information e.g.) GFYMDD -. G : Option Code (H : Halogen Free) -. F : Factory Management Code -. YMDD : Date Code (Year, Month, Date) Column 3 : Device Code Absolute maximum ratings (TC=25C unless otherwise noted) Characteristic Drain-source voltage [ ... ]

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