The Si7812DN from Vishay is a MOSFET with Continous Drain Current 16 A, Drain Source Resistance 31 to 46 Milliohm, Drain Source Breakdown Voltage 75 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for Si7812DN can be seen below.