Monolithic varistor

A monolithic varistor comprising a sintered layered body and a pair of external electrodes disposed on opposite ends of the layered body, the layered body being composed of a plurality of varistor material layers and a plurality of internal electrodes, which are layered on one another in such a manner that the varistor voltage is at least 300 volts, wherein when T is defined as an inter-inner electrode distance in the direction perpendicular to the layered varistor material layers and the internal electrodes and Tx is defined as the distance between the external electrode provided on either end of the layered body and the corresponding edges of the internal electrodes in a direction parallel to the layers, Tx is 1.5 to 3.0 times T, and when Ty is defined as the distance between an outermost inner electrode and the upper surface of the sintered layered body in the direction perpendicular to the layered varistor material layers and the internal electrodes, Ty is equal to or greater than T.