MULTILAYER COIL COMPONENT

• Main Authors: EBINA KAZUHIRO, ISHIMA YUYA, WADA RYUICHI, KAWASAKI KUNIHIKO, SATO SHINICHI, NAGAI YUSUKE, NAKAGAWA SEIICHI, YASUDA KEITO, SUZUKI TAKASHI, KONDO SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 14.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

To provide a multilayer coil component in which the adhesion strength between an element assembly and an external electrode can be improved.SOLUTION: A multilayer coil component 1 includes an element assembly 2 including a plurality of metal magnetic particles M1, a coil 15 disposed in the element assembly 2, and an external electrode 4 disposed on a surface of the element assembly 2 and connected electrically to the coil 15. At least a part of a gap part V between the metal magnetic particles M1 and M1 in the element assembly 2 is filled with first resin R1. The external electrode 4 includes a resin electrode 32 including second resin R2 and conductive powder M2 dispersed in the second resin R2. The second resin R2 continuing from the resin electrode 32 extends into the element assembly 2.SELECTED DRAWING: Figure 7 【課題】素体と外部電極との間の密着強度を向上できる積層コイル部品を提供する。【解決手段】積層コイル部品１は、複数の金属磁性粒子Ｍ１を含む素体２と、素体２内に配置されたコイル１５と、素体２の表面に配置され、コイル１５と電気的に接続された外部電極４と、を備え、素体２における金属磁性粒子Ｍ１，Ｍ１間の空隙部分Ｖの少なくとも一部には、第１の樹脂Ｒ１が充填されており、外部電極４は、第２の樹脂Ｒ２と、当該第２の樹脂Ｒ２中に分散された導体粉末Ｍ２とを含む樹脂電極３２を有し、樹脂電極３２から繋がる第２の樹脂Ｒ２が素体２内に延びている。【選択図】図７