公开(公告)号：US11967445B2

公开(公告)日：2024-04-23

申请号：US17636217

申请日：2020-11-27

Applicant: TDK CORPORATION

Inventor： Daisuke Tsuchida ,  Takehiko Abe ,  Yoshihiko Satoh ,  Shingo Yasuda ,  Yuki Ikeda ,  Makikazu Takehana

IPC: H01C7/04 ,  H01C1/14 ,  H01C1/148

CPC classification number: H01C7/042 ,  H01C1/1413 ,  H01C1/148

Abstract: An NTC thermistor element includes a thermistor body and a plurality of internal electrodes disposed in the thermistor body and opposing each other. The thermistor body includes a region interposed between adjacent internal electrodes of the plurality of internal electrodes. The region of the thermistor body includes a plurality of crystal grains arranged in succession between the internal electrodes adjacent to each other. The plurality of crystal grains include a first crystal grain, a second crystal grain, and a third crystal grain. The first crystal grain is in contact with one internal electrode of the internal electrodes adjacent to each other. The second crystal grain is in contact with another internal electrode of the internal electrodes adjacent to each other. The third crystal grain is not in contact with the first crystal grain and the second crystal grain.