The ECS-MPI4040R4-R47-R from ECS Inc. International is a RF Inductor with Inductance 0.45 µH, DC Resistance 9 mOhms, DC Current 8.1 A (RMS), 11.5 A (Saturated), Self Resonant Frequency 20 kHz to 10 MHz, Operating Temperature -55 to 125 Degree C. Tags: Chip Inductor. More details for ECS-MPI4040R4-R47-R can be seen below.