The SSM3J338R from Toshiba is a MOSFET with Continous Drain Current -6 A, Drain Source Resistance 13.9 to 45.3 Milliohm, Drain Source Breakdown Voltage -12 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage -1 to -0.3 V. Tags: Surface Mount. More details for SSM3J338R can be seen below.