The AUIRFR8405 from Infineon Technologies is a MOSFET with Continous Drain Current 100 to 211 A, Drain Source Resistance 1.65 to 1.98 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 AUIRFR8405 can be seen below.