The IAUC45N04S6L063H from Infineon Technologies is a MOSFET with Continous Drain Current 15 to 59 A, Drain Source Resistance 5.2 to 8.5 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 16 V, Gate Source Threshold Voltage 1.2 to 2 V. Tags: Surface Mount. More details for IAUC45N04S6L063H can be seen below.