Chosen Solution
I’m working on an iPhone 6s specifically, but I suppose this question could apply to any of the iPhones. I need to replace FL4105, but the schematics only specify 70-ohms, 25%, 0.28A. Not quite the info I would expect for an inductor. What about frequency response and inductance value? Does anyone know what these components are exactly? All I can reasonably come up with is a multi-layer ceramic chip inductor, but that leaves too many options when trying to find a suitable replacement based only on the minimal info in the schematic.
FL4105 is a Ferrite Bead so it is not rated in inductance, only resistance. While a ferrite bead is indeed an inductor, it becomes resistive at high frequencies and it dissipates the high frequency noise as heat. This is what you’re looking for.
