Nonlinear resistor and manufacturing method of the same

Details Nonlinear resistor and manufacturing method of the same Nonlinear resistor and manufacturing method of the same

H - Electricity

01

C

H01C 7/12 (2006.01) H01C 1/142 (2006.01) H01C 7/112 (2006.01) H01C 17/28 (2006.01) H02H 9/04 (2006.01)

Patent

CA 2256783

A nonlinear resistor is formed by forming side surface insulating layer 2 on a sintered body 1 which contains zinc oxide as a main component and providing a pair of electrodes 3 on upper and lower surfaces of the sintered body 1. The electrodes 3 are formed by plasma thermal spraying of less than 10 kW in an atmosphere in which an oxygen concentration is set to 22 volume % or less. The electrodes 3 are formed of aluminum, copper, zinc, nickel, silver, or their alloy whose average particle size is within 5 µm to 50 µm. Preferably porosity is less than 15 %, weight percentage of metal oxide is less than 25 %, average film thickness is within 5 µm to 500 µm, average surface roughness is less than 8 µm, and resistivity is less than 15 µ .OMEGA.~cm. Accordingly, the nonlinear resistor having the excellent discharge withstand can be provided.

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