LAMINATED COIL COMPONENT

• Main Authors: EBINA KAZUHIRO, MIURA KAZUHIRO, KAWASAKI KUNIHIKO, SATO SHINICHI, NAGAI YUSUKE, TSUNODA KOICHI, NAKAGAWA SEIICHI, SUZUKI TAKASHI, KONDO SHINICHI, KOIKE MITSUHARU
• Format: Patent
• Language: English; Japanese
• Published: 07.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

To provide a laminated coil component which achieves improvement of DC superposition characteristics.SOLUTION: The laminated coil component includes an element assembly including a plurality of metal magnetic particles MM and a resin RE existing between the plurality of metal magnetic particles, and a coil that is arranged in the element assembly and includes a plurality of mutually electrically connected coil conductors. At least a part of the plurality of coil conductors has a spiral shape, and has conductor parts adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor part includes linearly extending linear conductor parts SC1, and connection conductor parts SC3 that connect the linear conductor parts and constitute corner parts of the coil conductors. A density of the metal magnetic particles MM between the mutually adjacent connection conductor parts SC3 is lower than a density of the metal magnetic particles MM between the mutually adjacent linear conductor parts SC1.SELECTED DRAWING: Figure 5 【課題】直流重畳特性の向上が図れる積層コイル部品を提供する。【解決手段】積層コイル部品は、複数の金属磁性粒子ＭＭと、複数の金属磁性粒子間に存在している樹脂ＲＥとを含んでいる素体と、素体内に配置されていると共に、互いに電気的に接続されている複数のコイル導体を含むコイルと、を備えている。複数のコイル導体の少なくとも一部は、渦巻き状であり、コイルのコイル軸に沿った方向から見て、互いに隣り合っている導体部を有している。導体部は、直線状に延在している直線導体部ＳＣ１と、直線導体部を接続していると共にコイル導体の角部を構成している接続導体部ＳＣ３と、を含む。互いに隣り合っている接続導体部ＳＣ３の間の金属磁性粒子ＭＭの密度は、互いに隣り合っている直線導体部ＳＣ１の間の金属磁性粒子ＭＭの密度よりも低い。【選択図】図５