Coil Component Insulation Between External Terminals
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Solution Overview
Problem
Existing coil components face challenges in achieving sufficient insulation between external terminals on the same surface of the element body, leading to potential short-circuits.
Innovation Solution
A coil component design incorporating a metal magnetic powder-containing resin element body with insulating substrates and insulating portions exposed between coil portions, along with external terminals that cover and enhance insulation, preventing short-circuits by ensuring effective separation between terminal ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple external terminals are provided on the same surface of the element body, then the connectivity and functionality of the coil component are improved, but the insulation between the external terminals deteriorates leading to potential short-circuits
Solution Approach 1:
The patent introduces a third dimension by having the insulating portion extend from the interior of the element body to the outer surface. This vertical extension adds depth to the insulation structure, creating a three-dimensional insulation barrier that effectively separates adjacent external terminals on the same surface while maintaining their electrical connectivity functions
Solution Approach 2:
The insulating portion acts as an intermediary material placed between the external terminals. This intermediate insulating structure physically separates the terminals and prevents direct electrical contact, thereby maintaining reliability while allowing multiple terminals to coexist on the same surface for improved connectivity
2Reliability
If the insulating portion extends to cross between the first end portions of the pair of coil portions, then the insulation between external terminals is significantly improved, but the device complexity increases
Solution Approach 1:
The insulating portion is merged with the element body structure, forming an integrated component rather than a separate additive element. This integration allows the insulating function to be achieved while minimizing additional structural complexity, as the insulating portion becomes part of the overall element body architecture
Data Source
AI summary
A coil component improving insulation between external terminals provided on the same surface of an element body is provided. In the coil component, when a voltage is applied via the external terminal electrode, for example, a potential difference may occur between the outer end portions. In the coil component, since the insulation between the outer end portions is enhanced by the upper insulator exposed on the end face of the element body, even when a potential difference occurs between the outer end portions, a situation in which the outer end portions are short-circuited on the end face is prevented.