Low voltage, high surge current varistors

Littelfuse has announced the LV UltraMOV Varistor Series, designed with a proprietary formulation that is claimed to provide higher surge ratings up to 10kA with a smaller volume of material used per energy unit. It features a Vac voltage range of 11 to 95V, and Vdc voltage range of 14 to 125V.

The LV UltraMOV Varistor Series is designed for use in applications including telecom power systems, surge protection devices, automation controls, audio/visual devices, security systems and wireless base stations.

The devices are claimed to have long-term reliability due to their ability to handle high surges of 500 to 10,000A. They also feature a reduced footprint and volume which increases board space and lowers the weight of the final product by utilising a smaller disc size than previous offerings.

Lead-free, halogen-free and RoHS compliant the LV UltreMOV Varistor Series is available in five sizes; 5, 7, 10, 14 and 20mm. They operate across a temperature range from -40 to 125°C.