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Examples of Murata’s ferrite power inductors and their structures are shown on this slide. Murata offers ferrite power inductors in two variations, wire-wound and multi-layer. Wire-wound inductors use a traditional manufacturing method where the wire is wrapped around a ferrite core and the wires are terminated at the bottom of the structure. They can be offered with optional shielding used to limit the electromagnetic flux radiation influencing other parts of the circuit. Since wire-wound inductors have been on the market longer, they have an extensive lineup of inductance values and current capabilities. Multi-layer inductors utilize a process that allows the silver electrode to be printed onto a ferrite substrate. The substrates are stacked layer by layer to form the coil utilizing through-hole vias to make the interlayer connection. This construction method allows for robust characteristics, small size, and a very attractive cost.