Patent ID: 8313672

Claim:
A process for producing a surge absorbing material provided with dual functions of having one of the characteristics among capacitance, inductance, voltage suppressor and thermistor in addition to surge absorbing characteristic, comprising the steps of: a) preparing a sol solution of glass phase composition in an amount of 3% to 60% by weight of the surge absorbing material through a sol-gel process; wherein the glass phase composition selected from the group consisting of a capacitance glass state component, an inductance glass state component, a voltage suppressor glass state component and a thermistor glass state component; b) dispersing nanometer sized conductive or semiconductive particles with a particle diameter of smaller than 0.01 μm in an amount of 0.01% to 1% by weight of the surge absorbing material into the sol solution of glass phase composition in step a); c) dispersing submicron sized conductive or semiconductive particles with a particle diameter of 0.01 μm to 0.1 μm in an amount of 0.5% to 8% by weight of the surge absorbing material into the sol solution of glass phase composition having dispersed the nanometer sized particles therein in step b); d) dispersing micron sized conductive or semiconductive particles with a particle diameter of larger than 0.1 μm in an amount of 35% to 96.49% by weight of the surge absorbing material into the sol solution of glass phase composition having dispersed both the nanometer and submicron sized particles therein in step c); e) dying and calcining the sol solution of glass phase composition after step d) at temperature of lower than 1000° C.; and finally milling the calcined composite material to become the surge absorbing material.