Insulated Coil Component Layout for High Inductance in Compact Packages
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Solution Overview
Problem
Conventional coil components face challenges in achieving high inductance without increasing size, as a smaller margin between the coil conductor and external electrode can lead to leak currents and dielectric breakdown, compromising performance.
Innovation Solution
A coil component design featuring a magnetic base body with soft magnetic metal particles, external electrodes, and insulators strategically positioned to maintain insulation and enhance inductance, with the insulators placed between flange portions and coil patterns to ensure efficient electrical insulation and prevent dielectric breakdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the margin between the coil conductor and the external electrode is reduced, then the device size can be decreased, but dielectric breakdown may occur between the coil conductor and the external electrode
Solution Approach 1:
The insulator serves as a mediator that enables the reduction of device size by allowing smaller margins while preventing dielectric breakdown through its insulating properties.
Solution Approach 2:
The insulator is positioned locally at the critical interface between the coil conductor and the flange portion, providing insulation precisely where needed rather than uniformly throughout the structure, enabling compact design while maintaining reliability.
Data Source
AI summary
A coil component according to one embodiment of the present invention includes a magnetic base body, a first external electrode, a second external electrode, a coil conductor extending around a coil axis, and an insulator. The insulator is provided between the flange portion of the second external electrode and the second coil pattern.