Nippon Electric Co., Ltd.

Ohizumi Mfg. Co., Ltd.

Takaki Fukushima

Tomeji Ohno

Nobuaki Shohata

Shigeru Ikeda

Ryuji Igarashi

Jyun-Ichiro Yoshida

Nonohmic ZnO ceramics including the following additives have the voltage nonlinear exponent .alpha. of 30 or more, the dielectric constant .epsilon. of about 1000 or less, the loss factor (tan .delta.) of less than 10%, and small variations caused in the breakdown voltage V.sub.i by load and large current pulses. The additives listed by molecular formulae are given in % by mol. The glass components are given for Nos. 1 through 4 in % by weight, symbols of elements being representative of borosilicate lead and/or zinc glass.

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Tokyo, Japan

Takaki Fukushima