Multilayer coil component and inspection system for multilayer coil component
AssigneeMurata Manufacturing Co., Ltd.
InventorsKaoru Tachibana, Kouta Nakao
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Abstract
A multilayer coil component includes magnetic layers and inner electrode layers that are alternately laminated on one another. The inner electrode layers are electrically connected to each other to constitute a helical coil conductor. The coil conductor is buried in an element body composed of the magnetic layers. Outer electrodes having folded portions are disposed on both end portions of the element body. The inner electrode layers of the coil conductor have protrusions protruding from both outer edges extending in a length direction of the element body.
Claims20
A multilayer coil component having a vertically-wound helical coil conductor structure, comprising:
- magnetic layers constituting an element body;
- inner electrode layers laminated with the magnetic layers alternately on each other, the inner electrode layers electrically connected to each other to define the helical coil conductor embedded in the element body, and the inner electrode layers of the helical coil conductor have protrusions located at opposite outer edges of the inner electrode layers in a length direction of the element body;
- and
- outer electrodes provided on opposite end portions of the element body, said outer electrodes each having a folded portion,
- wherein the protrusions are arranged between portions of the inner electrode layers where the inner electrode layers are electrically connected to each other.
An inspection system for a multilayer coil component having a vertically-wound helical coil conductor structure, the multilayer coil component including magnetic layers constituting an element body, and inner electrode layers laminated with the magnetic layers alternately on each other, the inner electrode layers electrically connected to each other to define the helical coil conductor embedded in the element body, the inspection system comprising:
- allowing the inner electrode layers to have protrusions located at opposite outer edges of the inner electrode layers in a length direction of the element body;
- and
- determining whether at least one of the protrusions is exposed through an edge of the element body in a width direction thereof to inspect quality of the multilayer coil component,
- wherein the protrusions are arranged between portions of the inner electrode layers where the inner electrode layers are electrically connected to each other.
Dependencies are inferred from the claim text.