Laminated Coil Component With Non-Magnetic Insulation Layer
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Solution Overview
Problem
Laminated electronic components with metallic magnetic materials experience leaks between outer electrodes and coil conductors due to insufficient insulation, affecting reliability.
Innovation Solution
Incorporating a non-magnetic layer between the outer electrodes and coil conductors, specifically using a Zn-Cu ferrite material, to enhance insulation and prevent leaks, while also improving direct current superposition characteristics and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metallic magnetic material is used for the magnetic layer, then the magnetic properties are improved, but leak occurs between the outer electrode and the coil conductor opposing the outer electrode
Solution Approach 1:
A non-magnetic layer is introduced as an intermediary between the outer electrode and the coil conductor opposing the outer electrode. This non-magnetic layer acts as a mediator that prevents direct contact and potential leakage while allowing the metallic magnetic material to maintain its magnetic properties in the magnetic layer.
Solution Approach 2:
The structure is segmented into distinct functional layers: the magnetic layer containing metallic magnetic material for magnetic properties, and a separate non-magnetic layer for electrical insulation. This segmentation allows each layer to perform its specific function without interfering with the other, resolving the contradiction between magnetic performance and electrical insulation.
2Reliability
If insulation between outer electrode and coil conductor is enhanced by adding a non-magnetic layer, then leak is inhibited, but device structure becomes more complex
Solution Approach 1:
The non-magnetic layer is integrated into the existing laminated structure of the electronic component, merging the insulation function with the overall device architecture. Rather than adding a separate complex insulation system, the non-magnetic layer is incorporated as part of the laminated layers, maintaining structural simplicity while achieving the insulation objective.
Data Source
AI summary
A laminated electronic component includes a body including a magnetic layer containing magnetic particles; a coil provided within the body; and outer electrodes provided on a bottom surface of the body and each electrically connected to any one of end portions of the coil. The coil is formed by connecting a plurality of coil conductors stacked within the body, and the body includes a non-magnetic layer present between one of the outer electrodes and one of the coil conductors opposing the one of the outer electrodes.