The AUIRFR8403 from Infineon Technologies is a MOSFET with Continous Drain Current 90 to 127 A, Drain Source Resistance 2.4 to 3.1 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 AUIRFR8403 can be seen below.