COIL COMPONENT AND METHOD FOR MANUFACTURING THE SAME

To provide a coil component having a structure that a coil layer where a plurality of conductor layers and a plurality of interlayer insulating layers are alternately laminated is embedded in a magnetic elemental body which prevents plating adhesion to an unnecessary part and exposure of coil conductor patterns.SOLUTION: A coil component 1 includes: a magnetic elemental body 10 composed of a resin containing conductive magnetic powder; a coil part 20 where a plurality of conductor layers 31 to 34 including coil conductor patterns C1 to C4 embedded in the magnetic elemental body 10 and electrode patterns 51 to 54 and 61 to 64 exposed from the magnetic elemental body 10, and a plurality of interlayer insulating layers 40 to 44 are alternately laminated; external terminals E1 and E2 provided on the electrode patterns 51 to 54 and 61 to 64; and a protective insulating layer 70 covering the magnetic elemental body 10 so as to expose the external terminals E1 and E2. Thus, since the magnetic elemental body 10 is covered with the protective insulating layer 70, even when electrolytic plating is applied to surfaces of the external terminals E1 and E2, plating adhesion to an unnecessary part and exposure of the coil conductor patterns are prevented.SELECTED DRAWING: Figure 2 【課題】複数の導体層と複数の層間絶縁層が交互に積層されてなるコイル層が磁性素体に埋め込まれた構造を有するコイル部品において、不要箇所へのメッキ付着やコイル導体パターンの露出を防止する。【解決手段】コイル部品１は、導電性磁性粉を含有する樹脂からなる磁性素体１０と、磁性素体１０に埋め込まれたコイル導体パターンＣ１～Ｃ４及び磁性素体１０から露出する電極パターン５１～５４，６１～６４を含む複数の導体層３１～３４と複数の層間絶縁層４０～４４が交互に積層されたコイル部２０と、電極パターン５１～５４，６１～６４上に設けられた外部端子Ｅ１，Ｅ２と、外部端子Ｅ１，Ｅ２が露出するよう磁性素体１０を覆う保護絶縁層７０とを備える。このように、磁性素体１０が保護絶縁層７０で覆われていることから、外部端子Ｅ１，Ｅ２の表面に電解メッキを施す場合であっても、不要箇所へのメッキ付着やコイル導体パターンの露出が防止される。【選択図】図２