Stackpole Unveils ZOV Series Metal-Oxide Varistors

Stackpole Electronics Inc. (SEI, Raleigh, NC) has introduced a single-layer, metal-oxide varistor, the ZOV Series, for protection against high-current, high-energy transients. The ZOV Series operate in voltages that range from 60 Vrms to 680 Vrms in standard sizes from 23 mm to 60 mm. The ZOV Series is capable of handling up to 80 kA of current (8 µs/20 µs) and more than 4,100 W (in a single device). The ZOV Series are offered in round (ZOVR), square (ZOV), and dual- or triple-stacked (ZOVS) models, which can achieve high current and energy-handling capabilities. The ZOV is available with epoxy coating, rigid terminations, or with metallized blocks, which makes it suitablke for soldering or pressure contacts.

The ZOV Series has a flat to slightly positive temperature coefficient for its clamping voltage, which ensures that the device will clamp at the stated clamping voltage and prevent the part from failing due to current overload. The ZOV is suitable for service entrances (distribution panels) of buildings, surge arrestors, industrial motors, power suppliers, and controls. It can be customized to meet the requirements of a unique application.

The ZOV and ZOVR Series are UL and CS approved. Typical lead time for the ZOV Series is eight weeks for production quantities. Samples are immediately available.