The SSM6N68NU from Toshiba is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 67 to 180 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -8 to 12 V, Gate Source Threshold Voltage 0.4 to 1 V. Tags: Surface Mount. More details for SSM6N68NU can be seen below.