The SIRA54ADP-T1-RE3 from Vishay is a MOSFET with Continous Drain Current 128 A, Drain Source Resistance 1.8 to 3.2 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -16 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for SIRA54ADP-T1-RE3 can be seen below.