The SSM3J140TU from Toshiba is a MOSFET with Continous Drain Current -4.4 A, Drain Source Resistance 20.9 to 63.2 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 6 V, Gate Source Threshold Voltage -1 to -0.3 V. Tags: Surface Mount. More details for SSM3J140TU can be seen below.