Integrally formed inductor and manufacturing method for the same

Abstract

An integrally formed inductor has a core column, a coil, a residual magnetic body, and magnetic sheets. The core column and the magnetic sheets are made of a composite material composed of iron-based alloys. The coil is wound around the core column and is secured by bending to form bottom electrodes at the base of the magnetic sheets. The residual magnetic body is made of a mixed powder composed of iron-based alloys, iron-based amorphous nanocrystals, and carbonyl iron powder and disposed around the core column and coil. An insulating anti-rust layer is attached to the outer surface of the residual magnetic body and is made of a material composed of phenoxy resin, phenolic epoxy resin, and silicon micro powders.