The SiR820DP-T1-GE3 from Vishay is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 3.8 to 6 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.4 V. Tags: Surface Mount. More details for SiR820DP-T1-GE3 can be seen below.