Multilayer Ceramic Capacitor Electrode Ratio for DC-Bias Reliability
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Solution Overview
Problem
Multilayer ceramic electronic components face challenges in maintaining high temperature reliability and DC-BIAS properties as their thickness is reduced, particularly when used in applications requiring high rated current, leading to degraded performance.
Innovation Solution
A multilayer ceramic electronic component design featuring a ceramic body with a dielectric layer and internal electrodes, where the ratio of grain particle size to internal electrode thickness is optimized between 0.3 and 0.5, enhancing electrical properties and reliability while preventing degradation at high temperatures and under DC-bias conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the thickness of the multilayer ceramic electronic component is reduced, then the size is reduced and capacity is increased, but high temperature reliability deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the grain size to internal electrode thickness ratio within a specific range (0.3-0.5). This parameter optimization allows the component to maintain high temperature reliability while achieving reduced size and increased capacity, resolving the contradiction between miniaturization and reliability maintenance.
2Volume of moving object
If the thickness of the multilayer ceramic electronic component is reduced, then the size is reduced, but DC-BIAS properties deteriorate
Solution Approach 1:
The patent utilizes parameter changes by controlling the grain size to internal electrode thickness ratio within the optimized range of 0.3-0.5. This parameter control enables the component to maintain excellent DC-BIAS properties while achieving size reduction and capacity increase, effectively resolving the contradiction between miniaturization and DC-BIAS performance.
3Volume of moving object
If the thickness of the multilayer ceramic electronic component is reduced, then the size is reduced and capacity is increased, but performance degradation occurs under high rated current conditions
Solution Approach 1:
The patent applies parameter changes by optimizing the grain size to internal electrode thickness ratio to fall within 0.3-0.5. This optimization enables the component to maintain high performance and reliability under high rated current conditions while achieving reduced size and increased capacity, resolving the contradiction between miniaturization and high current performance.
Data Source
AI summary
A multilayer ceramic electronic component includes a ceramic body including a dielectric layer including a grain and first and second internal electrodes stacked in a third direction with the dielectric layer interposed therebetween, and including a first surface and a second surface opposing each other in a third direction, a third surface and a fourth surface opposing each other in a second direction, and a fifth surface and a sixth surface opposing each other in a first direction; and first and second external electrodes disposed on the fifth surface and the sixth surface of the ceramic body, respectively, and a ratio, G/I, of a particle size, G, of a grain of the dielectric layer to a thickness, I, of each of the first and second internal electrodes is 0.3 or more and 0.5 or less.