The SSM3K387R from Toshiba is a MOSFET with Continous Drain Current 2 A, Drain Source Resistance 98 to 198 milli-ohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage ±20 V, Gate Source Threshold Voltage 1.5 to 2.5 V. Tags: Surface Mount. More details for SSM3K387R can be seen below.