The SSM3K337R from Toshiba is a MOSFET with Continous Drain Current 2 A, Drain Source Resistance 135 to 200 Milliohm, Drain Source Breakdown Voltage 38 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.7 to 1.2 V. Tags: Surface Mount. More details for SSM3K337R can be seen below.