Soft magnetic metal dust core and reactor having thereof

Abstract

A soft magnetic metal dust core including a soft magnetic metal powder and a nonmagnetic material, in which when observing a field of view including “n”, a natural number of 50 or more, particles of the soft magnetic metal powder on a grinded smooth cross section of the dust core, the soft magnetic metal powder is coated by the nonmagnetic material, and a number of an opposing part P is n/2 or more, in which the opposing part P is a part where a length L is 10 μm or more, and the length L is a continuous length where a distance between particles of the soft magnetic metal powder is 400 nm or less, is provided. The soft magnetic metal dust core is superior in DC superimposing characteristic.

Dependencies are inferred from the claim text.