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Key Parameters for Selecting RF Inductors

Authored on: Jul 23, 2008 by Chris Hare

Technical Paper / Application Note

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RF inductor selection involves a number of key parameters including: mounting (surface mount or through-hole), inductance value, current rating, DC resistance (DCR), self-resonant frequency (SRF), Q factor, and temperature rating. While small size is typically desired, the laws of physics limit how small an inductor can be for a given application. Inductance value and current rating are the chief determinants of size. Once they have been calculated, other parameters can be optimized.
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