The SiR178DP-T1-RE3 from Vishay is a MOSFET with Continous Drain Current 430 A, Drain Source Resistance 0.31 to 1.2 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 12 V, Gate Source Threshold Voltage 0.6 to 1.5 V. Tags: Surface Mount. More details for SiR178DP-T1-RE3 can be seen below.