inductor

By embedding conductors in the magnetic core and designing a bent structure for the lead wire and electrode sections, the problem of inductance value deviation from specifications during inductor molding is solved, achieving stability of inductance value and increase of current, making it suitable for small, high-performance inductors.

CN115132466BActive Publication Date: 2026-06-09MURATA MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MURATA MFG CO LTD
Filing Date
2022-03-24
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing inductors have a problem where the conductors deform during the molding process, causing the inductance value to deviate from the allowable range.

Method used

A conductor is embedded in a magnetic core. The conductor has a wire portion extending across a pair of end faces inside the magnetic core and an electrode portion extending from the end faces. The electrode portion extends along the end faces and the mounting surface and is formed into an external electrode by plating. The wire portion bends toward the mounting surface when viewed from the side of the magnetic core.

Benefits of technology

It achieves inductance value convergence within the specification range, improves manufacturing yield, and can carry larger currents, making it suitable for small and thin high-performance inductors.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN115132466B_ABST
    Figure CN115132466B_ABST
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Abstract

The present application provides an inductor. The problem is to converge the inductance value within the specification allowed range. The inductor of the present application is an inductor (1) in which a conductor (20) is embedded in a magnetic core (30) containing a magnetic powder, the magnetic core (30) having: a mounting surface (10) facing the mounting substrate side at the time of mounting, an upper surface (12) of the mounting surface (10), a pair of end surfaces (14) orthogonal to the mounting surface (10), and a pair of side surfaces (16) orthogonal to the mounting surface (10) and the pair of end surfaces (14). The conductor (20) has: a wire portion (22) extending across the pair of end surfaces (14) inside the magnetic core (30), and an electrode portion (24) extending from each of the end surfaces (14) and along the end surfaces (14) and the mounting surface (10). When viewing the magnetic core (30) from the side surface, the wire portion (22) is bent toward the mounting surface (10) side.
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