Multilayer Ceramic Capacitor Electrode Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multilayer through-type capacitors face challenges in reducing DC resistance while maintaining low capacitance, which can lead to increased heat generation and connectivity issues between internal and external electrodes.
Innovation Solution
A multilayer ceramic capacitor design with a larger number of first internal electrode layers than second internal electrode layers, where at least two first internal electrode layers are successively layered, and second internal electrode layers are thicker than first internal electrode layers, ensuring improved connectivity and reduced DC resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of internal electrodes is reduced to lower capacitance, then the capacitance value decreases, but the DC resistance of the internal electrode increases
Solution Approach 1:
The internal electrodes are segmented into two distinct types: first internal electrodes extending in the height direction and second internal electrodes extending in the width direction. This segmentation allows independent optimization of each electrode type's configuration, enabling the first internal electrodes to be arranged for low DC resistance while the second internal electrodes control the capacitance value through their数量和配置.
Solution Approach 2:
Different regions of the capacitor have different electrode configurations optimized for their specific functions. The first internal electrodes are optimized for electrical connectivity and low DC resistance paths, while the second internal electrodes are optimized for capacitance control. This local differentiation resolves the contradiction by allowing each region to excel at its primary function without compromising the other.
2Quantity of substance
If ground electrodes are reduced to lower capacitance, then the capacitance decreases, but connectivity between ground electrodes and external electrodes deteriorates
Solution Approach 1:
The second internal electrodes serve multiple functions: they act as ground electrodes providing connectivity to external electrodes, and simultaneously function as capacitance-controlling elements through their数量和配置. This multi-functionality allows them to maintain reliable connectivity while controlling the capacitance value, resolving the contradiction between reducing capacitance and maintaining connectivity.
Solution Approach 2:
The second internal electrodes extend in the width direction (horizontal dimension) rather than only in the height direction. This dimensional change provides alternative connectivity paths to external electrodes on side surfaces, ensuring reliable ground connections even when the number of electrodes is reduced for lower capacitance applications.
Data Source
AI summary
A multilayer ceramic capacitor includes a multilayer body in which dielectric layers are layered, first internal electrode layers extending to opposing end surfaces of the multilayer body, second internal electrode layers extending to opposing side surfaces of the multilayer body, first and second external electrodes connected to the first internal electrode layers and provided on the respective opposing end surfaces, and third and fourth external electrodes connected to the second internal electrode layers and provided on the respective opposing side surfaces. A number of the first internal electrode layers is larger than a number of the second internal electrode layers, at least two first internal electrode layers are successively layered, and a thickness of the second internal electrode layers is larger than a thickness of the first internal electrode layers.