This part is a kind of semiconductor called 2SK2401.
Function of this product has N-Channel MOSFET Transistor.
Manufacturers : Inchange Semiconductor
Image and pinout :
Some of the text within the PDF file :
INCHANGE Semiconductor isc N-Channel MOSFET Transistor isc Product Specification 2SK2401 DESCRIPTION ·Drain Current ID= 15A@ TC=25℃ ·Drain Source Voltage- : VDSS= 200V(Min) ·Fast Switching Speed APPLICATIONS ·Switching Regulators ·DC-DC Converter, ·Motor Control ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL ARAMETER VALUE UNIT VDSS Drain-Source Voltage (VGS=0) VGS Gate-Source Voltage ID Drain Current-continuous@ TC=25℃ 200 ±30 15 V V A ID(puls) Pulsed Drain Current 45 A Ptot Total Dissipation@TC=25℃ 75 W Tj Max. Operating Junction Temperature 150 ℃ Tstg Storage Temperature Range -55~150 ℃ ·THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rth j-c Rth j-a · Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient 1.67 ℃/W 83.3 [ ... ]