The ECS-MPI4040R1-3R3-R from ECS International is a Power Inductor with Inductance 3.3 µH, Inductance Tolerance ±20 %, DCR 115 milli-ohm, Saturation Current 5100 mA, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ECS-MPI4040R1-3R3-R can be seen below.