MLCC Spacer Reinforcement Structure for Stronger Mounting Bonds
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Solution Overview
Problem
Multilayer ceramic capacitors face issues with weak bonding strength between the capacitor main body and the spacer, leading to insufficient durability when mounted.
Innovation Solution
A multilayer ceramic capacitor design featuring spacers with a reinforcement portion that covers at least 50% of the spacer end surfaces, using metal intermetallic compounds and phenol resin, and an insulating resin reinforcement portion to enhance bonding strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a spacer is added to suppress acoustic noise, then acoustic noise is reduced, but bonding strength between capacitor main body and spacer becomes weak
Solution Approach 1:
The invention uses a composite material structure where a resin layer is formed between the spacer and the capacitor main body. This resin layer acts as an adhesive bonding the spacer to the capacitor main body, while the spacer itself (made of metal or other materials) provides acoustic noise suppression. The combination of the resin layer and spacer creates a composite structure that simultaneously achieves both bonding strength and acoustic noise reduction.
Solution Approach 2:
The resin layer serves as an intermediary substance between the spacer and the capacitor main body. It mediates the bonding interface, providing adhesion between the two components. The resin layer transfers and distributes mechanical stresses, ensuring strong bonding while allowing the spacer to perform its acoustic noise suppression function.
2Ease of manufacture
If bonding strength between capacitor main body and spacer is weak, then manufacturing is simpler, but durability when mounted becomes insufficient
Solution Approach 1:
The resin layer forms a composite bonding structure between the spacer and capacitor main body. This composite approach provides strong adhesion and durability during mounting while maintaining manufacturing simplicity, as the resin layer can be applied through conventional coating or lamination processes.
Solution Approach 2:
The invention controls the thickness and material properties of the resin layer to optimize both bonding strength and manufacturing ease. By adjusting parameters such as resin layer thickness (typically thin, e.g., 1-10 μm) and material composition, the structure achieves high durability while remaining compatible with standard manufacturing processes.
Data Source
AI summary
A multilayer ceramic electronic component includes a capacitor body including dielectric layers and internal electrode layers alternately laminated, and two external electrodes respectively on two end surfaces, connected to the internal electrode layers, and covering a portion of a main surface and a portion of a side surface, two spacers respectively on one end surface side and an other end surface side, with the external electrode covering the portion of the main surface or the portion of the side surface being sandwiched therebetween, at a main surface side or a side surface side of the capacitor body, and a reinforcement portion between the two spacers. The reinforcement portion covers about 50% or more of a center-side spacer end surface, where the two spacers face each other, and of two spacer end surfaces facing each other in a length direction in each of the two spacers.