Multilayer Electronic Component Electrode Layout for Crack-Free Mounting
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Solution Overview
Problem
Existing multilayer ceramic capacitors face issues with protrusions and alignment problems during mounting, leading to potential cracks and unintended forces due to the exposure of internal electrode edges and the formation of external electrodes.
Innovation Solution
The design incorporates a configuration where the edges of internal electrodes are positioned differently and the base electrodes are inclined, reducing the likelihood of protrusions by ensuring the base electrode edges align with the innermost position of the exposed edges, thereby improving mounting stability and reducing crack formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internal electrode edges are exposed from side surfaces of the body, then external electrodes can be formed to cover the side surfaces, but protrusions occur and alignment problems arise during mounting leading to potential cracks
Solution Approach 1:
The patent extracts the problematic exposed edges of internal electrodes from the side surfaces by forming recesses that cover these edges. This removes the source of protrusions and alignment issues while maintaining the external electrode coverage function.
Solution Approach 2:
The patent performs preliminary action by forming recesses in the body before applying external electrodes. These recesses pre-position the internal electrode edges within the body structure, preventing protrusion formation during subsequent mounting processes.
2Ease of manufacture
If base electrodes are provided on side surfaces and metal is deposited by plating to form external electrodes, then external electrodes can be formed, but protrusions and alignment problems occur during mounting
Solution Approach 1:
The patent removes the problematic configuration where base electrodes are exposed on side surfaces. By forming recesses that cover the internal electrode edges, the design eliminates the source of alignment precision issues while maintaining ease of manufacture through the plating process.
Solution Approach 2:
The recesses are formed in advance before external electrode application, pre-positioning the internal electrode edges within the body. This preliminary structural preparation ensures proper alignment during manufacturing without requiring complex control during the plating process.
3Reliability
If internal electrode edges are exposed, then external electrodes can be formed to cover side surfaces, but cracks and unintended forces occur during mounting
Solution Approach 1:
The patent forms recesses in advance to embed the internal electrode edges within the body structure. This preliminary structural preparation prevents crack formation and unintended forces during mounting by eliminating protrusions that would concentrate stress.
Solution Approach 2:
The recesses act as a cushioning structure that absorbs and distributes mounting forces. By pre-positioning the internal electrode edges within the recesses, the design provides protective cushioning against cracks and unintended forces during subsequent mounting operations.
Data Source
AI summary
In a multilayer electronic component, an effective part includes alternately stacked dielectric layers and internal electrodes. A cover overlaps the effective part from a first side in the stacking direction. A base electrode overlaps the cover from the first side. The effective part has an end surface facing a third side, among third and fourth sides, in a first direction intersecting the stacking direction. Multiple internal electrodes each include an exposed edge exposed from the end surface. At least some of the exposed edges have different positions in the first direction. The base electrode is located in a third-side region of a first-side surface of the cover. A position of the exposed edge located farthest toward the fourth side is an innermost position. A third-side edge of the base electrode is located at the innermost position or farther toward the fourth side than the innermost position.