Electronic Component Electrode Inclination Strength
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Solution Overview
Problem
Conventional electronic components with terminal electrodes have insufficient strength due to thinner portions at the edge lines, which can lead to structural weaknesses.
Innovation Solution
An electronic component with a rectangular parallelepiped body and external electrodes where the first end surface inclines towards the second end surface with decreasing distance from the mounting surface, and the thickness of the external electrode increases in the same direction, enhancing the electrode's strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the terminal electrode is made thin at the edge line to reduce material usage, then the quantity of substance is reduced, but the strength of the electrode becomes insufficient
Solution Approach 1:
The end surface is divided into two regions: a first region with a first inclination angle (30-60 degrees) near the edge line where the electrode thickness is increased for strength, and a second region with a second inclination angle (5-15 degrees) in the center where the electrode thickness is reduced for material efficiency. This local differentiation resolves the contradiction by providing thick electrodes only where structurally necessary.
Solution Approach 2:
The end surface is designed with asymmetric inclination angles relative to the normal direction, with the first region having a steeper angle than the second region. This asymmetric design allows the electrode to have varying thickness across the surface, being thicker at the edges for strength and thinner in the center for material reduction.
2Ease of manufacture
If the end surface is made flat to simplify manufacturing, then the ease of manufacture is improved, but the electrode strength at edge lines becomes insufficient
Solution Approach 1:
Instead of making the entire end surface complex, only specific regions (first and second regions) are given different inclination characteristics. The manufacturing process applies different polishing or machining parameters to these regions, achieving the required strength distribution while keeping the overall process relatively simple.
Solution Approach 2:
The inclination angle parameter is varied across different regions of the end surface. By changing this geometric parameter from the standard normal direction to specific angles (30-60 degrees for the first region, 5-15 degrees for the second region), the electrode thickness distribution is optimized for strength without requiring completely new manufacturing methods.
3Quantity of substance
If the electrode thickness is reduced overall to reduce material usage, then the quantity of substance is reduced, but the heat release capability becomes insufficient
Solution Approach 1:
The heat release requirement is addressed by concentrating thicker electrode material in the first region near the edge line where heat dissipation to external circuits is most critical. The second region in the center can be thinner since it is internally connected and does not require direct heat dissipation to external components.
Solution Approach 2:
The asymmetric inclination design creates non-uniform electrode thickness distribution that naturally places more material where heat release is needed (edges) and less material where it is less critical (center), optimizing thermal management while reducing overall material usage.
Data Source
AI summary
An electronic component including: a body having a shape of a rectangular parallelepiped, the body including a first end surface and a second end surface opposed to each other and a mounting surface; and a first external electrode provided on the first end surface and the mounting surface. A first portion of the first end surface inclines from a direction normal to the mounting surface so as to come closer to the second end surface with decreasing distance from the mounting surface in the normal direction, the first portion being a portion within a predetermined distance from the mounting surface in the normal direction. A thickness of a portion of the first external electrode contacting the first portion becomes greater with decreasing distance from the mounting surface in the normal direction.