叠层型滤波器

Multilayer filter

Abstract

本发明的目的是提供一种可变电阻部和电感部难以产生剥离的叠层型滤波器。优选的实施方式的叠层型滤波器(10)具有可变电阻部(30)和电感部(20)叠层的结构。可变电阻部(30)由具有内部电极(31a、32a)的可变电阻层(31、32)叠层形成,该可变电阻层以ZnO作为主成分,含有选自Pr和Bi的至少一种元素、Co和Al作为添加物。另外,电感部(20)由具有导体图案(21a~24a)的电感层(21~24)叠层形成,该电感层以ZnO作为主成分,实质上不含Co和Al。
An object of the present invention is to provide a multilayer filter constructed so as to be less likely to suffer peeling between a varistor part and an inductor part. A multilayer filter 10 as a preferred embodiment has a structure in which a varistor part 20 and an inductor part are stacked. The varistor part 30 consists of a stack of varistor layers 31, 32 with internal electrodes 31 a, 32 a,and the varistor layers contain ZnO as a principal component, and contain at least one element selected from the group consisting of Pr and Bi, Co, and Al as additives. The inductor part 20 consists of a stack of inductor layers 21 - 24 with conductor patterns 21 a- 24 a, and the inductor layers contain ZnO as a principal component and substantially contain neither Co nor Al.

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-102195613-ASeptember 21, 2011浙江大学Novel wideband zero phase shifter provided with transmission line with negative refractive index
    CN-102195613-BMay 07, 2014浙江大学Wideband zero phase shifter provided with transmission line with negative refractive index
    CN-103177875-AJune 26, 2013株式会社村田制作所层叠陶瓷电子元器件
    CN-103177875-BMarch 16, 2016株式会社村田制作所层叠陶瓷电子元器件