The SSM3K72KFS from Toshiba is a MOSFET with Continous Drain Current 0.3 A, Drain Source Resistance 1050 to 1750 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.1 V. Tags: Surface Mount. More details for SSM3K72KFS can be seen below.