The IAUA180N04S5N012 from Infineon Technologies is a MOSFET with Continous Drain Current 180 A, Drain Source Resistance 1 to 1.4 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2.2 to 3.4 V. Tags: Surface Mount. More details for IAUA180N04S5N012 can be seen below.