The IAUA120N04S5N014 from Infineon Technologies is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 1.2 to 1.6 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 IAUA120N04S5N014 can be seen below.