DUST CORE, METHOD FOR PRODUCING SAID DUST CORE, INDUCTOR PROVIDED WITH SAID DUST CORE, AND ELECTRONIC/ELECTRICAL DEVICE ON WHICH SAID INDUCTOR IS MOUNTED

摘要

Provided is a dust core which is suitable as a constituent member for a small and low inductor with a built-in coil, and which contains a powder of a crystalline magnetic material and a powder of an amorphous magnetic material. This dust core is configured such that: a first mixing ratio, which is the mass ratio of the content of the powder of the crystalline magnetic material to the sum of the content of the powder of the crystalline magnetic material and the content of the powder of the amorphous magnetic material, is from 30% by mass to 70% by mass (inclusive); the crystalline magnetic material is composed of an Fe-Si-Cr system alloy; and the median diameter D₅₀C thereof is from 2.5 μm to 6 μm (inclusive).