The IRFR5505TRPBF is an N-Channel Power MOSFET manufactured by Infineon. It has a breakdown voltage of 55V, a continuous Drain-Source current of 18A, a threshold voltage of 4V at 250uA, and an on-resistance of 110mO at 9.6A, 10V. It was designed for power management applications such as DC-DC converters, bootstraps and load switches in automotive, consumer, and industrial applications. It is a TO-252-2 (DPAK) package, and is RoHS compliant as well.