Op amps with either input grounded have a fixed input capacitance parameter, CI, and this device has a 1300pF @ 25V maximal input capacitance.To operate this transistor, you will need a 500V drain to source voltage (Vdss).A device like this reduces its overall power consumption when it uses drive voltage (10V).
TK12A50E,S5X Features
a 500V drain to source voltage (Vdss)
TK12A50E,S5X Applications
There are a lot of Toshiba Semiconductor and Storage TK12A50E,S5X applications of single MOSFETs transistors.
Synchronous Rectification for ATX 1 Server I Telecom PSU