公开(公告)号：US20210327617A1

公开(公告)日：2021-10-21

申请号：US17359721

申请日：2021-06-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MIKINORI AMISAWA ,  MASUTO OMIYA ,  KOUJI HIRATE ,  YUKIHITO YAMASHITA ,  TOUICHI MAKITA

IPC: H01C7/112 ,  H01C1/14

Abstract: An object is to provide a laminated varistor excellent in clamping voltage ratio. Laminated varistor includes at least a pair of internal electrodes provided in varistor layer containing ZnO as a main component.
Internal electrode contains Ag as a main component and is made of a metal containing at least one type selected from Pt and Au. The total weight of Pt and Au with respect to the weight of the metal constituting internal electrode is set between 2% and 30% (inclusive). With such a configuration, diffusion of Ag into varistor layer can be prevented, and a laminated varistor excellent in clamping voltage ratio can be obtained.