The IAUS240N08S5N019 from Infineon Technologies is a MOSFET with Continous Drain Current 173 to 240 A, Drain Source Resistance 1.5 to 3 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 IAUS240N08S5N019 can be seen below.