Encapsulated Metal Oxide Varistors

A Varistor (or voltage-dependant resistor) is a component that varies its electrical resistance as the applied voltage changes. At low voltage they have a high electrical resistance and at high voltage a low electrical resistance. In a system they are ideal for diverting surge voltages and spikes away from critical components.

Metal Oxide Varistors (MOVs) are made from zinc oxide and other metal oxides placed between two metal plates or contacts. The functions and applications of these components are similar to standard varistors.

  • High surge rating on short pulses
  • Fast response time pico-second range
  • Low standby (leakage) current
  • Cost effective for low average power applications
  • High clamping ratio
  • Board mountable, (Larger devices available)

Part #Max. Continious Operating Voltage (AC)Max. Continious Operating Voltage (DC)Max. Peak Surge Current (A)Max. Power Dissipation (W)
Z130EH6130175400002
Z150EH6150200400002
Z250EH6250330400002
Z275EH6275369400002
Z320EH6320420400002
Z420EH6420560400002
Z480EH6480640400002
Z510EH6510675400002
Z575EH6575730400002
Z600EH6600810400002
Z660EH6660850400002