Op amps with either input grounded have a fixed input capacitance parameter, CI, and this device has a 12pF @ 10V maximal input capacitance.To operate this transistor, you will need a 20V drain to source voltage (Vdss).A device like this reduces its overall power consumption when it uses drive voltage (1.5V 4.5V).
SSM3K16CTC,L3F Features
a 20V drain to source voltage (Vdss)
SSM3K16CTC,L3F Applications
There are a lot of Toshiba Semiconductor and Storage SSM3K16CTC,L3F applications of single MOSFETs transistors.
Synchronous Rectification for ATX 1 Server I Telecom PSU