INDUCTANCE ELEMENT AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an inductance element having small core loss and high efficiency by a heat treatment with a lower temperature as compared with the conventional art.

SOLUTION: The inductance element 100 includes a compact 1 containing Fe-based amorphous powder and a binding material, and a coil 2 provided in the compact 1. The inductance element 100 is an integrated molding type inductor, wherein the compact 1 constitutes a magnetic core portion 3 and both ends of the coil 2 are exposed from the molding 1 to constitute terminal portions 4a and 4b. The Fe-based amorphous powder is a material essential to make the coil 2 into an integrated molding coil having excellent DC superposition characteristics and adaptive to a large current, and preferably has a composition such that crystallization temperature Tx is ≤520°C. Under the conditions, an optimum strain removing heat treatment can be carried out at low temperature and insulation property and low loss of the core (magnetic core portion 3) can be made compatible.

COPYRIGHT: (C)2010,JPO&INPIT