I-Metal Oxide Varistor / i-Zinc Oxide Varistor ayisiyomgca wokumelana usebenzisa i-semiconductor element electrocnic ceramic element ikakhulu enziwe nge-zinc oxide. Ibizwa ngokuba yi-varistor okanye i-mental oxide varistor (MOV), njengoko inovakalelo kutshintsho lwevolthi. Umzimba we-varistor sisakhiwo se-matrix esenziwe ngamasuntswana e-zinc oxide. Imida yokutya okuziinkozo phakathi kwamasuntswana iyafana neempawu zombane zeendlela ze-PN. Xa ombane iphantsi le mida yokutya okuziinkozo ikwimeko ephezulu ye-impedance kwaye xa ombane ephezulu aya kuba kwimeko yokwahlulwa okuluhlobo lwesixhobo esingaqhelekanga.