The Si1078X from Vishay is a MOSFET with Continous Drain Current 1.02 A, Drain Source Resistance 142 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.6 to 1.5 V. Tags: Surface Mount. More details for Si1078X can be seen below.