Title:
フェライトコア及びトランス
Document Type and Number:
Japanese Patent JP5828308
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a ferrite core capable of sufficiently suppressing a rise of a core temperature, even when being located in an environment excited continuously.SOLUTION: In this ferrite core containing Fe, Mn, Zn and Co, as for x defined by the following formula (1), assuming that x in a surface part having the depth of ≤1.5 mm from the sintered body surface is x(o), and that x in an inner part having the depth of ≥2.5 mm from the sintered body surface is x(i), {x(o)-x(i)} which shows the difference between the inside and the outside of the sintered body with respect to x is in the following range, -0.0015≤{x(o)-x(i)}≤0.0005. The formula (1) is represented: x=(Fe-Co-Mn)/(Fe+Mn+Zn+Co), wherein, in formula (1), (Fe-Co-Mn) is based on [wt%], and (Fe+Mn+Zn+Co) is also based on [wt%].
Inventors:
Katsushi Yasuhara
Shoji Susa
Kentaro Mori
Masahiro Gamo
Kenya Takakawa
Shoji Susa
Kentaro Mori
Masahiro Gamo
Kenya Takakawa
Application Number:
JP2012162661A
Publication Date:
December 02, 2015
Filing Date:
July 23, 2012
Export Citation:
Assignee:
tdk Corporation
International Classes:
C04B35/38; H01F1/34; H01F27/255; H01F30/00
Domestic Patent References:
| JP2009227554A | ||||
| JP2004292303A | ||||
| JP2002231520A |