Mn/Co/Bi/Dy ADDED ZNO-V2O5 BASED VARISTOR AND METHOD FOR MANUFACTURING SAME

摘要

The present invention provides Mn/Co/Bi/Dy added ZnO-V_2O_5 based varistor which is capable of controlling a clamping property and a pulse current stress resistance property by adjusting a sintering temperature, and a method for manufacturing the same. The Mn/Co/Bi/Dy added ZnO-V_2O_5 based varistor includes ZnO as a main component, to which vanadium oxide (V_2O_5), manganese oxide (MnO_2), cobalt oxide (CO_3O_4), bismuth oxide (Bi_2O_3), and dysprosium oxide (Dy_2O_3) are added. The Mn/Co/Bi/Dy added ZnO-V_2O_5 based varistor has a sintering temperature in the range of 900°C to 925°C. Specifically, even after a test of applying a pulse current is performed, a breakdown voltage and a nonlinear coefficient of the Mn/Co/Bi/Dy added ZnO-V_2O_5 based varistor may be changed to be equal to or higher than that of the initial state thereof. In addition, the leakage current of the Mn/Co/Bi/Dy added ZnO-V_2O_5 based varistor may be changed to be equal to or less than that of the initial state thereof.;COPYRIGHT KIPO 2017