The SiR878BDP-T1-RE3 from Vishay is a MOSFET with Continous Drain Current 42.5 A, Drain Source Resistance 12 to 17 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 3.4 V. Tags: Surface Mount. More details for SiR878BDP-T1-RE3 can be seen below.