The ECS-MPI4040R1-1R0-R from ECS International is a Power Inductor with Inductance 1 µH, Inductance Tolerance ±20 %, DCR 40 milli-ohm, Saturation Current 7700 mA, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ECS-MPI4040R1-1R0-R can be seen below.