Method of manufacturing a metal oxide varistor

Details Method of manufacturing a metal oxide varistor Method of manufacturing a metal oxide varistor

1977-03-23

1979-08-21

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

252518, 252520, 264 61, 264234, 264345, C04B 3332

Patent

active

041653513

ABSTRACT:
Disclosed is a method of manufacturing a metal oxide varistor body. Conventional manufacturing techniques through sintering are utilized on any metal oxide varistor formulation which includes bismuth oxide. Following sintering, the devices are heat treated at a temperature between 750.degree. C. and 1200.degree. C. for a time in excess of about 10 hours. The heat treatment increases the alpha of the devices and substantially lowers the leakage current.

REFERENCES:
patent: 3899451 (1975-08-01), Ichinose et al.

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