https://www.ferroshield.com/
manuafcturer of ferrite& ceramic EMI electronic components- split/ solid/ snap EMI ferrite cores for ribbon cables, solid sleeve/ toroidal EMI ferrite cores,...
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https://www.electronicdesign.com/technologies/components/passives/article/21755694/rf-chip-inductors-take-little-space
Designed for portable devices where space is at a premium, the 0402CD miniature RF chip inductors are available in 22 inductance values from 1 nH to 47 nH....
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