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Coil component having terminal electrodes with high mounting strength, and electronic device including the coil component

  • US 10,192,674 B2
  • Filed: 06/28/2017
  • Issued: 01/29/2019
  • Est. Priority Date: 07/29/2014
  • Status: Active Grant
First Claim
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1. A coil component comprising an air-core coil embedded in a magnetic body constituted by resin and metal magnetic grains, and having terminal electrodes electrically connected to both ends of the coil, wherein:

  • both ends of the coil are exposed on a surface of the magnetic body;

    the terminal electrodes are formed across the surface of the magnetic body and ends of the coil, and constituted by an underlying layer formed with metal material and a cover layer placed on an outer side of the underlying layer; and

    the underlying layer is in contact with the resin and metal parts of the metal magnetic grains where the underlying layer is in contact with the magnetic body,wherein a magnetic body surface on a side where either terminal electrode is connected to the end of the coil contains less resin than a magnetic body surface on a side where no terminal electrode is connected to the end of the coil.

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