Global Patent Index - EP 0074177 A2

EP 0074177 A2 19830316 - Metal oxide varistor with controllable breakdown voltage and capacitance.

Title (en)

Metal oxide varistor with controllable breakdown voltage and capacitance.

Title (de)

Metalloxidvaristor mit kontrollierbarer Durchschlagsspannung und Kapazität.

Title (fr)

Varistance en oxyde métallique à tension de claquage et capacité contrÔlables.

Publication

EP 0074177 A2 19830316 (EN)

Application

EP 82304111 A 19820804

Priority

US 29590181 A 19810824

Abstract (en)

A metal oxide varistor with controllable breakdown voltage and capacitance characteristics is fabricated by controlled diffusion of lithium into conventional metal oxide varistor material at elevated temperature. The varistor layer containing lithium exhibits an increased breakdown voltage, lowered capacitance, and low leakage current while maintaining a high coefficient of nonlinearity.

IPC 1-7

H01C 7/10; C04B 35/00

IPC 8 full level

H01C 7/10 (2006.01); H01C 7/112 (2006.01)

CPC (source: EP)

H01C 7/112 (2013.01)

Designated contracting state (EPC)

CH GB LI SE

DOCDB simple family (publication)

EP 0074177 A2 19830316; EP 0074177 A3 19830831; BR 8204971 A 19830802; CA 1186806 A 19850507; JP S5866304 A 19830420

DOCDB simple family (application)

EP 82304111 A 19820804; BR 8204971 A 19820823; CA 408962 A 19820806; JP 14224382 A 19820818