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Alternative Methods for Determining Chip Inductor Parameters

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1 Author(s)
W. Manka ; American Precision Industries,Inc.,East Aurora, NY

For high density packaging applications, it is not sufficient to know only the inductance, Q, and dc resistance of a chip inductor. The self-resonant frequency, coupling coefficient, working voltage, and rated current are important parameters that must also be known to properly utilize these components. However, the small size and shielding of chip inductors make it difficult to determine these parameters by conventional means. This paper suggests possible alternative methods. The advantages; disadvantages, and precautions of the conventional and alternative methods for determining the self-resonant frequency, coupling coefficient, working voltage, and rated current are discussed and compared. It is intended that this paper will prove to be useful source of practical information to engineers, enabling them to utilize chip inductors and other magnetic components more effectively.

Published in:

IEEE Transactions on Parts, Hybrids, and Packaging  (Volume:13 ,  Issue: 4 )