The SiDR578EP from Vishay is a MOSFET with Continous Drain Current 78 A, Drain Source Resistance 7.3 to 10 Milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for SiDR578EP can be seen below.