ELECTRICAL COMPONENT HAVING HIGH STRENGTH GIVEN STRESSING DUE TO TEMPERATURE CHANGE AND DUE TO SURGE CURRENTS, PARTICULARLY A VARISTOR

摘要

An electrical component, particularly a varistor, having high strength given stressing due to temperature change and due to surge currents is composed of a ceramic body whose end faces contain solderable metallic coatings as electrodes to which power supply elements are soldered, the latter being composed of a closed strip which leaves open and inwardly-disposed area and an outwardly-disposed area on the coating and which is dimensioned such that the condition Fa : Fi = Ua : Ui = 1.05 through 1.35 is met, where Fa is the surface of the coating located outside of the power supply element, Fi is the surface of the coating lying inside the power supply element, Ua is the outer circumference of the power supply element and Ui is the inner circumference of the power supply element. Each power supply element contains a lead clip which is spaced from the metallic surface by bends to such a degree that the clip is not soldered to the metallic coating.