Multilayer Ceramic Component Insulating Coating Migration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multilayer ceramic electronic components face migration issues between external electrodes of differing polarity along the surfaces of laminated bodies, which affects their reliability and performance.
Innovation Solution
The implementation of a multilayer ceramic electronic component design that includes a laminated body with multiple dielectric and internal electrode layers, paired with insulating coating portions made of dielectric ceramic, resin, or glass materials, which extend between external electrodes to reduce or prevent migration along side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external electrodes are extended along side surfaces of the laminated body, then electrical connectivity is improved, but migration between electrodes of opposite polarity occurs along the side surfaces
Solution Approach 1:
An insulating coating is applied to the side surfaces of the laminated body to act as an intermediary barrier between external electrodes of opposite polarity. This coating prevents direct contact and migration pathways while allowing the electrodes to maintain their extended configuration for electrical connectivity.
Solution Approach 2:
The harmful migration pathway is extracted or removed from the system by applying an insulating coating that eliminates the conductive path along the side surfaces, while preserving the necessary electrical connectivity through the electrode extensions.
2Reliability
If insulating coating portions are applied between external electrodes on side surfaces, then migration is prevented, but device complexity increases
Solution Approach 1:
A thin film insulating coating is applied to the side surfaces of the laminated body to prevent migration between external electrodes. This thin film approach provides effective isolation without significantly increasing device complexity or size.
Data Source
AI summary
A multilayer ceramic electronic component includes a laminated body, a first external electrode, a pair of second external electrodes, and a pair of insulating coating portions. The pair of insulating coating portions extends in a laminating direction between each of the pair of second external electrodes and the first external electrode on a second principal surface, from the second principal surface to respective portions of a first side surface and a second side surface. As viewed from at least one direction in the laminating direction, an end of the pair of insulating coating portions, which is located closest to a first principal surface, is located closer to the first principal surface than an end of the first external electrode and pair of second external electrodes, which is located closest to the first principal surface.