The SiR401DP-T1-GE3 from Vishay is a MOSFET with Continous Drain Current -50 A, Drain Source Resistance 2.5 to 7.7 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.5 to -0.6 V. Tags: Surface Mount. More details for SiR401DP-T1-GE3 can be seen below.