COIL COMPONENT

To provide a coil component improved in a breakdown voltage.SOLUTION: In a coil component 10, a second magnetic portion 30 disposed in the vicinity of a coil C is designed so that a ratio of Fe is higher than that of metal magnetic powder-containing resin constituting a first magnetic portion 28, so...

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Bibliographic Details
Main Authors ARATA MASAZUMI, OKUBO HITOSHI, KAWAHARA TAKAHIRO, ASAI MIYUKI
Format Patent
LanguageEnglish
Japanese
Published 26.11.2020
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:To provide a coil component improved in a breakdown voltage.SOLUTION: In a coil component 10, a second magnetic portion 30 disposed in the vicinity of a coil C is designed so that a ratio of Fe is higher than that of metal magnetic powder-containing resin constituting a first magnetic portion 28, so that a flow of a magnetic flux of the coil C is smoothed. Although having a relatively lower breakdown voltage than the first magnetic portion 28, the second magnetic portion 30 is surrounded by the first magnetic portion, so that the same is not exposed on a surface of a magnetic body 26. Therefore, a situation in which the coil C and external terminal electrodes 14A and 14B are short-circuited via the second magnetic portion 30 is effectively suppressed, and short circuit between the coil C and the external terminal electrodes 14A and 14B can be suppressed.SELECTED DRAWING: Figure 3 【課題】耐電圧の向上が図られたコイル部品を提供する。【解決手段】 コイル部品１０においては、コイルＣの近傍に配置された第２磁性部３０が、第１磁性部２８を構成する金属磁性粉含有樹脂よりもＦｅの割合が高くなるように設計されているため、コイルＣの磁束の流れの円滑化が図られている。第２磁性部３０は、第１磁性部２８に比べて相対的に耐電圧が低くなっているが、第１磁性部に包囲されているため、磁性体２６の表面には露出していない。そのため、コイルＣと外部端子電極１４Ａ、１４Ｂとが第２磁性部３０を介して短絡する事態が効果的に抑制されており、コイルＣと外部端子電極１４Ａ、１４Ｂとの間の短絡が抑制され得る。【選択図】図３
Bibliography:Application Number: JP20190095128