Title:
LAMINATED TYPE INDUCTOR
Document Type and Number:
Japanese Patent JP3508642
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a laminated type inductor which has a good synthesis reaction at calcining and firing a magnetic layer and few monconformities in plating processings.
SOLUTION: This laminated type inductor 1 is composed of magnetic sheets 2, having their respective coil conductors 3 to 6 on the surfaces, magnetic cover sheets 2 having no conductor previously prepared on the surfaces, etc. The magnetic sheets 2 are formed by mixing powders contg. Fe2O3, NiO, ZnO and CuO as the main components at prescribed ratios, and the compsn. thereof is pref. Fe2O3 45-50 mol%, NiO 5-50 mol%, ZnO 0.5-30 mol% and CuO 4-16 mol%. For the raw material powders, Bi2O3 having a specific area of 10-20 m2/g, 0.1 wt.% or higher and 0.5 wt.%. or lower is added.
Inventors:
Maeda, Hidekazu
Imada, Katsuhisa
Imada, Katsuhisa
Application Number:
JP25031999A
Publication Date:
March 22, 2004
Filing Date:
September 03, 1999
Export Citation:
Assignee:
MURATA MFG CO LTD
International Classes:
H01F1/34; H01F5/00; H01F17/00; H01F17/04; H01F41/04; (IPC1-7): H01F17/00; H01F1/34; H01F17/04
Attorney, Agent or Firm:
森下 武一
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