Varistors KEMET Varistors protect circuits from high energy discharges and offer a voltage range of 8VAC to 300VAC and 11VDC to 385VDC. These varistors have a wide range of SMD sizes and are all AEC-Q200 compliant. The product family features the VM, VK, VA, VC, VE, VG, and VP series, ideally suited for targeted uses. KEMET Varistors are ideal for automotive electronics, industrial, and consumer electronic applications.