MLCC Spacer Structure for Stronger Bonding and Noise Suppression
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Solution Overview
Problem
Multilayer ceramic capacitors face issues with weak bonding strength between the capacitor main body and spacers, leading to delamination and insufficient durability during mounting.
Innovation Solution
The use of spacers with a first region covering a portion of the multilayer body and a second region covering a portion of the external electrode, where the first and second regions are made of different materials, such as a combination of metal and resin, to enhance bonding strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If spacers are used to suppress acoustic noise, then acoustic noise is reduced, but bonding strength between capacitor main body and spacers becomes weak
Solution Approach 1:
The spacer is divided into two distinct regions: a first region that contacts the capacitor main body and a second region that contacts the external electrode. This segmentation allows each region to be optimized for its specific function, with the first region providing strong bonding to the capacitor body while the second region provides acoustic noise suppression.
Solution Approach 2:
Different regions of the spacer are made of different materials with different properties. The first region uses a material optimized for bonding strength to the capacitor main body, while the second region uses a material optimized for acoustic noise suppression. This local differentiation resolves the contradiction between bonding strength and noise suppression.
2Object-affected harmful factors
If spacers are used to suppress acoustic noise, then acoustic noise is reduced, but durability during mounting becomes insufficient
Solution Approach 1:
The spacer is segmented into functionally distinct regions that can be optimized independently. The first region is designed specifically for durable bonding to the capacitor main body during mounting, while the second region handles acoustic noise suppression, ensuring both durability and noise reduction.
Solution Approach 2:
By assigning different materials to different regions, the first region can use materials with high bonding strength and durability characteristics for mounting reliability, while the second region uses materials optimized for acoustic noise suppression, thereby resolving the contradiction between durability and noise control.
Data Source
AI summary
A multilayer ceramic electronic component includes a multilayer body including an inner layer portion including dielectric layers and internal electrode layers alternately stacked, two main surfaces opposite to each other in a stacking direction and two end surfaces opposite to each other in a length direction, two external electrodes connected to the internal electrode layers at the two end surfaces, respectively, and covering the end surfaces and portions of the two main surfaces and continuous with the end surfaces, and two spacers on one of the two main surfaces of the multilayer body. The spacers each include a first region covering a portion of the multilayer body, and a second region covering a portion of an external electrode. The first and second regions include different materials.