COIL COMPONENT
PROBLEM TO BE SOLVED: To provide a coil component capable of ensuring adhesion between an external terminal and a magnetic resin layer.SOLUTION: A coil component 1 includes a first surface 1a and a second surface 1b that face each other. The coil component 1 includes: coil conductors 21 and 22 forme...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a coil component capable of ensuring adhesion between an external terminal and a magnetic resin layer.SOLUTION: A coil component 1 includes a first surface 1a and a second surface 1b that face each other. The coil component 1 includes: coil conductors 21 and 22 formed in a spiral shape; an insulating resin layer 35 covering the coil conductors; a magnetic resin layer 40 provided on a first surface side of the insulating resin layer and not provided on a second surface side of the insulating resin layer; and external terminals 61 and 62 provided on one surface of at least the first surface side of the magnetic resin layer and electrically connected to the coil conductors. The magnetic resin layer 40 is made of a composite material of resin and metal magnetic powder. The external terminals 61 and 62 include a metal film 63 in contact with the resin of the magnetic resin layer and the metal magnetic powder.SELECTED DRAWING: Figure 3
【課題】外部端子と磁性樹脂層との密着性を確保できるコイル部品を提供する。【解決手段】コイル部品1は、互いに対向する第1面1aと第2面1bを含む。コイル部品1は、スパイラル状に形成されたコイル導体21、22と、コイル導体を覆う絶縁樹脂層35と、絶縁樹脂層の第1面側に設けられる一方、絶縁樹脂層の第2面側に設けられない磁性樹脂層40と、磁性樹脂層の少なくとも第1面側の一面に設けられ、コイル導体に電気的に接続された外部端子61、62とを有する。磁性樹脂層40は、樹脂および金属磁性粉のコンポジット材料からなる。外部端子61、62は、磁性樹脂層の樹脂および金属磁性粉に接触する金属膜63を含む。【選択図】図3 |
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