The AUIRFR8401 from Infineon Technologies is a MOSFET with Continous Drain Current 71 to 100 A, Drain Source Resistance 3.2 to 4.25 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2.2 to 3.9 V. Tags: Surface Mount. More details for AUIRFR8401 can be seen below.