Columnar Lead-Out Electrode Layout for Low-Flux-Blocking Inductors
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Solution Overview
Problem
The existing inductor components have lead-out electrodes that extend in an L-shape, covering large areas and potentially blocking excessive magnetic flux generated by the inductor wiring.
Innovation Solution
The inductor component design features a columnar first lead-out electrode exposed from the first end and side surfaces of the element body, reducing the coverage area and minimizing magnetic flux blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lead-out electrodes extend in an L-shape across the mounting surface and end surfaces, then the lead-out electrodes provide extensive electrical connection and structural support, but the lead-out electrodes cover large areas and excessively block magnetic flux generated by the inductor wiring
Solution Approach 1:
The lead-out electrode transitions from a two-dimensional L-shaped planar structure to a three-dimensional columnar structure that extends vertically from the mounting surface. This dimensional change allows the electrode to provide sufficient electrical connection area at its base while minimizing its horizontal footprint, thereby reducing magnetic flux blocking in the horizontal plane.
Solution Approach 2:
The lead-out electrode changes its geometric parameters from an extended L-shape with large surface area to a compact columnar form. This parameter change maintains the essential electrical connection function while significantly reducing the area that blocks magnetic flux paths.
2Strength
If lead-out electrodes have an L-shape extending onto the mounting surface, then the lead-out electrodes provide extensive structural support and electrical connection, but the coverage area increases and blocks magnetic flux
Solution Approach 1:
The electrode structure moves from a planar L-shape to a vertical column, utilizing the third dimension (height) to provide structural support without increasing the horizontal coverage area. The columnar form maintains strength through its vertical extension while minimizing interference with the magnetic flux paths in the horizontal plane.
Solution Approach 2:
The geometric parameters of the electrode are changed from extended horizontal dimensions to a compact base with vertical height. This parameter transformation preserves the structural support function while reducing the coverage area that would block magnetic flux.
3Reliability
If lead-out electrodes extend across large areas of the element body, then the electrical connection and structural support are enhanced, but the magnetic flux generated by inductor wiring is excessively blocked
Solution Approach 1:
The electrode adopts a vertical columnar form that concentrates its electrical connection area at the base while extending upward. This dimensional reconfiguration maintains reliable electrical connection without spreading the electrode material across large horizontal areas, thereby preserving magnetic flux paths and reducing energy loss.
Solution Approach 2:
The electrode's geometric parameters are optimized by concentrating its cross-sectional area into a compact columnar form rather than spreading it out in an L-shape. This parameter change ensures sufficient electrical connection at the mounting surface while minimizing the horizontal footprint that would block magnetic flux and cause energy loss.
Data Source
AI summary
An inductor component includes an element body. The element body has a mounting surface and a top surface that are parallel to each other, first and second parallel end surfaces, and first and second parallel side surfaces. An inductor wiring is disposed inside the element body. A first lead-out electrode is connected to a first end of the inductor wiring in an extension direction of the inductor wiring. A second lead-out electrode is connected to a second end of the inductor wiring in the extension direction of the inductor wiring. A lower surface of the first lead-out electrode and a lower surface of the second lead-out electrode are exposed from the mounting surface of the element body. The first lead-out electrode has a substantially quadrangular columnar shape that extends in a height direction. The first lead-out electrode is exposed from the first end surface and the first side surface.