Compacts forming core, method for producing said compacts core, inductor equipped with compaction core, and electronic / electrical apparatus with the inductor mounted thereon

摘要

The powder compacting core containing a plurality of kinds of powders comprising a soft magnetic material is suitable as a constituent member of a compact inductor, and the first and second powders, which are two kinds of powders, satisfy the following formula.D1 > D2 (1-1)0.23 ≦ (d1-d2) / D1 < 0.3 (1-2)D1 1 μ M (1-3)3 μ M ≦ DT ≦ 5.7 μ M (1-4)Among the plural kinds of powders contained in the compacted compacted core, the particle size distribution measured by the laser diffraction and scattering method is the largest particle size (median diameter) of the particle size distribution from the small particle size side to the size of 50% from the small particle size side. The second powder has a minimum median diameter.D1 is the median diameter of the first powder, and D2 is the median diameter of the second powder.DT uses the weight ratio R1 of the first powder and the weight ratio R2 of the second powder to × D1 + R2 × D2 is obtained.