The SSM6J505NU from Toshiba is a MOSFET with Continous Drain Current -12 A, Drain Source Resistance 9 to 61 Milliohm, Drain Source Breakdown Voltage -12 V, Gate Source Voltage -6 to 6 V, Gate Source Threshold Voltage -1 to -0.3 V. Tags: Surface Mount. More details for SSM6J505NU can be seen below.