Multilayer Ceramic Component Asymmetric Design for Mounting Stability
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Solution Overview
Problem
The miniaturization of multilayer ceramic electronic components, which increases the number of stacked layers for high capacitance, often results in components toppling over when mounted on a board, leading to defects and reliability issues.
Innovation Solution
A multilayer ceramic electronic component with a hexahedral ceramic body, where the thickness is greater than the width, featuring internal electrodes alternately exposed through end surfaces and external electrodes connected to these internal electrodes, with head and band parts on the end and main surfaces but not on the side surfaces, and insulation layers on the side surfaces to prevent short-circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of stacked layers is increased to achieve high capacitance, then the capacitance is improved, but the component becomes top-heavy and topples over during mounting
Solution Approach 1:
The patent applies asymmetry by making the thickness T greater than the width W (T/W > 1.0), creating an asymmetric hexahedral shape. This asymmetric design shifts the center of gravity downward and provides a stable base during mounting, preventing the component from toppling over while maintaining high capacitance through increased layer stacking in the thickness direction.
2Volume of moving object
If the component is miniaturized and layered thickness is reduced, then the size is decreased, but the component becomes unstable and prone to toppling
Solution Approach 1:
The patent resolves the stability issue by utilizing the thickness dimension more effectively. By increasing the thickness T relative to width W while maintaining a compact footprint, the design creates a tall, stable structure similar to a skyscraper. This dimensional approach allows miniaturization in the planar directions while maintaining stability through increased vertical dimension.
3Adaptability or versatility
If external electrodes are formed on all surfaces for electrical connection, then the electrical connectivity is improved, but short-circuits occur when the component topples over
Solution Approach 1:
The patent applies local quality by selectively forming external electrodes only on specific surfaces (end surfaces and main surfaces) while deliberately excluding the side surfaces. This localized electrode arrangement ensures that even if the component topples, the electrodes on the stable base (side surfaces) remain uncovered, preventing short-circuits while maintaining adequate electrical connectivity through the exposed electrodes on other surfaces.
Data Source
AI summary
There is provided a multilayered ceramic electronic component including a ceramic body having a hexahedral shape, including a dielectric layer, satisfying T/W>1.0 when a length thereof is L, a width thereof is W, and a thickness thereof is T, and having first and second main surfaces, first and second end surfaces, and first and second side surfaces, a plurality of first and second internal electrodes, and first and second external electrodes electrically connected to the first and second internal electrodes, wherein the first and second external electrodes are electrically connected to the exposed portions of the first and second internal electrodes, include first and second head parts formed on the first and second end surfaces, and first and second band parts formed on the first and second main surfaces, and are not formed on the first and second side surfaces.