Inductor Component Asymmetric Electrode Stray Capacitance
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Solution Overview
Problem
Conventional inductor components experience increased stray capacitance due to the large size of five-sided external electrodes, which affects their mounting stability and inductance efficiency.
Innovation Solution
The inductor component design features non-overlapping, L-shaped external electrodes with optimized center-of-gravity positions and reduced dimensions, utilizing a helical coil configuration and insulating layers to minimize stray capacitance and enhance mounting stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If five-sided external electrodes are used to ensure electrical connection, then reliability is improved, but stray capacitance increases due to larger electrode size
Solution Approach 1:
The patent applies asymmetry by positioning the first external electrode and second external electrode at different locations on the base body, specifically on opposite sides of the center in the width direction. This asymmetric arrangement ensures that the electrodes do not overlap when viewed from the length direction, thereby reducing stray capacitance while maintaining reliable electrical connections to the coil.
2Reliability
If external electrodes are made larger to ensure electrical connection, then reliability is improved, but mounting stability deteriorates
Solution Approach 1:
The patent positions the external electrodes asymmetrically on the base body, with each electrode located on opposite sides of the center in the width direction. This asymmetric configuration reduces the overall electrode size and prevents overlap, thereby improving mounting stability while ensuring sufficient electrical connection area through optimized electrode placement.
3Reliability
If external electrodes overlap to ensure electrical connection, then reliability is improved, but inductance efficiency deteriorates due to increased stray capacitance
Solution Approach 1:
The patent employs asymmetric positioning of the external electrodes on opposite sides of the base body center in the width direction. This arrangement prevents electrode overlap and minimizes stray capacitance, thereby improving inductance efficiency and energy utilization while maintaining reliable electrical connections to the coil through optimized electrode geometry and placement.
Data Source
AI summary
An inductor component comprising a base; a coil in the base body and wound along a direction of an axis; and first and second external electrodes disposed on the base body and electrically connected to the coil. The base body includes first and second end surfaces and a second end surface at ends in the length direction, first and second side surfaces at ends in the width direction, and bottom and top surfaces at ends in the height direction. The first and second external electrodes are respectively disposed toward the first and second end surfaces with respect to a center in the length direction and exposed from an outer surface of the base body. When viewed from the first end surface in the length direction, at least a part of a respective portion of the first and second external electrodes exposed from the outer surface do not overlap.