公开(公告)号：US10233123B2

公开(公告)日：2019-03-19

申请号：US15368729

申请日：2016-12-05

Applicant: THINKING ELECTRONIC INDUSTRIAL CO., LTD.

Inventor： Yong-Ming Lin ,  Yan-Liang Shih ,  Tui-Ting Tu

IPC: C03C3/15 ,  C04B35/63 ,  C04B35/453 ,  C04B35/622 ,  C04B35/626 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64 ,  H01C1/148 ,  H01C7/112

Abstract: A varistor composition free of Sb comprising: (a) ZnO; (b) B—Bi—Zn—Pr glass, or B—Bi—Zn—La glass, or a mixture thereof; (c) a cobalt compound, a chromium compound, a nickel compound, a manganese compound, or mixtures thereof; (d) SnO2; and (e) an aluminum compound, a silver compound, or a mixture thereof. By adjusting the ratio between the components, the varistor composition may be made into a multilayer varistor with inner electrodes having a low concentration of noble metals at a sintering temperature less than 1200° C. The multilayer varistor made from the varistor composition has good maximum surge current, good ESD withstand ability, and low fabrication cost.