公开(公告)号：US20180199474A1

公开(公告)日：2018-07-12

申请号：US15743794

申请日：2016-07-11

Applicant: TODA KOGYO CORP.

Inventor： Yoji OKANO ,  Akihiro YOSHIDA ,  Kazumi YAMAMOTO ,  Yuji OMOTE

IPC: H05K9/00 ,  H01F1/36 ,  H01F1/34

CPC classification number: H05K9/0088 ,  B32B7/02 ,  B32B2307/212 ,  H01F1/344 ,  H01F1/36

Abstract: In accordance with the present invention, there is provided a noise suppression sheet that is capable of absorbing noise at a wide frequency range of from 10 MHz to 1 GHz. The present invention relates to a ferrite laminate formed by laminating a conductive layer comprising a conductive filler and a resin and a magnetic layer comprising ferrite; the conductive layer has a surface electrical resistance of of 100 to 5000 Ω/□; the ferrite is partitioned into small parts; and a real part of a magnetic permeability of the ferrite as measured at 10 MHz is 130 to 480, and an imaginary part of of the magnetic permeability of the ferrite as measured at 10 MHz is 30 to 440.