Inductor component

The inductor component addresses the trade-off between Q value and mountability by employing a rectangular parallelepiped structure with planar and columnar electrodes, enhancing magnetic performance and adhesion, thus improving both Q value and mountability.

WO2025253679A1PCT designated stage Publication Date: 2025-12-11MURATA MFG CO LTD
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Patent Information

Application Number
PCT/JP2025/000096
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-07
Filing Date
2025-01-07
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Conventional inductor components face challenges in achieving both improved Q value and mountability, with existing designs either compromising on magnetic flux density or adhesion strength due to electrode configurations.

Method used

The inductor component features a rectangular parallelepiped structure with spirally wound coils and external electrodes that include both planar and columnar portions, strategically positioned to minimize stray capacitance while maximizing mounting area and adhesion, utilizing point-symmetric planar electrode portions for uniform solder tension.

Benefits of technology

This design enhances the Q value, particularly in the high-frequency range, and improves mountability by reducing stray capacitance and increasing the available mounting area, minimizing tombstoning phenomena.

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    Figure JP2025000096_11122025_PF_FP_ABST
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Abstract

An inductor component 1 comprises a parallelepiped element body 10 which contains an insulator, a coil 20 which is provided inside the element body 10 and which is wound along a coil axis direction, and a first external electrode 30 and a second external electrode 40 which are electrically connect to the coil 20. The element body 10 has a first end surface 11a and a second end surface 11b which are opposite from each other in a length direction L, a first main surface 12a and a second main surface 12b which are opposite from each other in a height direction T, and a first side surface 13a and a second side surface 13b which are opposite from each other in a width direction W. The first external electrode 30 has a first planar electrode portion 31 which extends in a planar manner along the first main surface 12a so as to be exposed on the element body 10, and a first columnar electrode portion 32 which extends in a columnar manner along a first ridge portion 14a and / or a second ridge portion 14b from the first planar electrode portion 31 so as to be exposed on the element body 10. The second external electrode 40 has a second planar electrode portion 41 which extends in a planar manner along the first main surface 12a so as to be exposed at a distance from the first planar electrode portion 31 on the element body 10, and a second columnar electrode portion 42 which extends in a columnar manner along a third ridge portion 14c and / or a fourth ridge portion 14d from the second planar electrode portion 41 so as to be exposed on the element body 10. When seen from the height direction T, the first planar electrode portion 31 and the second planar electrode portion 41 have a point-symmetrical shape.
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Citation Information

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