Elecsound can offer below size for zinc oxide varistors 5mm zinc oxide varistor 7mm zinc oxide varistor 10mm zinc oxide varistor 14mm zinc oxide varistor 20mm zinc oxide varistor 7mm zinc oxide varistor With it`s nonlinear characterisistics of resistivity, zinc oxide varistor can protect all kinds of electronic devices or elements of electronic circuits from induced lightening or switching surges. The zinc oxide varistor have been widely used in various kinds communication equipment, household appliances and electronic control circuits of industry mechanics, etc.