Laminated electronic component
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Solution Overview
Problem
The existing laminated electronic components face challenges in achieving high adhesion between the outer electrode and the body, as well as good contactability during mounting, which are crucial for reliability and performance.
Innovation Solution
The laminated electronic component features outer electrodes with a recess-shaped wedge portion on their side surfaces, where the body enters the wedge, and the outermost surface of the electrode extends beyond the body's bottom surface, enhancing adhesion and contactability. The manufacturing method involves forming a multilayer body with a magnetic layer, applying conductive and magnetic pastes, and baking to create the electrode structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer electrode is formed on the bottom surface of the multilayer body, then the contactability during mounting is improved, but the adhesion between the outer electrode and the body deteriorates
Solution Approach 1:
The outer electrode is designed to extend in the thickness direction beyond the bottom surface of the body, creating a protruding structure. This dimensional extension allows the electrode to simultaneously maintain strong adhesion at the interface and provide sufficient contact area on the mounting surface, resolving the contradiction between adhesion strength and contactability
Solution Approach 2:
The outer electrode structure is divided into two functional regions: a portion embedded in the body for adhesion and a portion extending outward for contactability. This segmentation allows each region to optimize its function independently, with the embedded portion providing strong bonding and the extended portion ensuring good electrical contact during mounting
Data Source
AI summary
A laminated electronic component includes a body including a magnetic layer containing magnetic particles; a coil provided within the body; and outer electrodes provided on a bottom surface of the body and each electrically connected to any one of end portions of the coil. In a cross-section perpendicular to the bottom surface of the body, a side surface of each outer electrode has a recess-shaped wedge portion, and a part of the body enters the wedge portion. At the bottom surface of the body, at least a part of a surface of each outer electrode is located outward of the bottom surface of the body.