This part is a kind of semiconductor called 2SK1212.

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 2SK1212 DESCRIPTION ·Drain Current –ID=5A@ TC=25℃ ·Drain Source Voltage- : VDSS=900V(Min) ·Fast Switching Speed APPLICATIONS ·high voltage, high speed power switching ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL ARAMETER VALUE UNIT VDSS VGS ID Ptot Tj Tstg Drain-Source Voltage (VGS=0) Gate-Source Voltage 900 ±20 V V Drain Current-continuous@ TC=25℃ 5 A Total Dissipation@TC=25℃ 80 W Max. Operating Junction Temperature 150 ℃ 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 1.56 30 ℃/W ℃/W isc website：www.iscsemi.cn 1 isc & iscsemi is regist [ ... ]

2SK1212 PDF Datasheet Download