The SSM3J56ACT from Toshiba is a MOSFET with Continous Drain Current -1.4 A, Drain Source Resistance 310 to 4000 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to -0.3 V. Tags: Surface Mount. More details for SSM3J56ACT can be seen below.