The SIR500DP-T1-RE3 from Vishay is a MOSFET with Continous Drain Current 350.8 A, Drain Source Resistance 0.39 to 0.68 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 16 V, Gate Source Threshold Voltage 1 to 2.2 V. Tags: Surface Mount. More details for SIR500DP-T1-RE3 can be seen below.