Characteristic analysis of ZnO varistors made with spherical precipitation powders

Shr Nan Bai*, Jen Shame Shieh, Tseung-Yuen Tseng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Small, uniform and spherical ZnO powders for the fabrication of ZnO varistors were obtained by an aqueous precipitation method. The varistor samples made from the ZnO powders using butylamine and urea as precipitant show excellent surge response characteristics. However, the varistor samples made by the ZnO-butylamine powders gave better electrical properties, including higher nonohmic property and lower leakage current, than those made by the ZnO-urea powders, because the ZnO powders precipitated by butylamine had smaller and more homogeneous size than those precipitated by urea.

Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalMaterials Chemistry & Physics
Issue number2
StatePublished - 1 Jan 1995


  • Aqueous precipitation
  • Electrical properties
  • Homogeneity
  • Varistor
  • ZnO powder

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