The IAUT165N08S5N029 from Infineon Technologies is a MOSFET with Continous Drain Current 120 to 165 A, Drain Source Resistance 2.4 to 4.4 Mohms, Drain Source Breakdown Voltage 80 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2.2 to 3.8 V. Tags: Surface Mount. More details for IAUT165N08S5N029 can be seen below.