This part is a kind of semiconductor called SMK0965FC.
Function of this product has Advanced N-Ch Power MOSFET.
Manufacturers : KODENSHI KOREA
Image and pinout :
Some of the text within the PDF file :
SMK0965FC 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.) Ordering Information Type No. Marking Package Code SMK0965FC SMK0965 TO-220F-3L (C Forming) PIN Connection GDS G TO-220F-3L Marking Diagram AUAKUK SMGΔKYYM09MD6DD5D SDB20D45 Column 1 : Manufacturer Column 2 : Production Information e.g.) GYMDD -. G : Factory management code -. YMDD : Date Code (year, month, date) Column 3 : Device Code D S Absolute maximum ratings (TC=25°C unless otherwise noted) Characteristic Symbol Drain-source voltage VDSS Gate-source voltage Drain current (DC) * Drain current (Pulsed) * VGSS ID TC=25℃ TC=100℃ IDM Power [ ... ]