Metal Oxide Varistor, MYH Series, surge protective device

Tyco Electronics_Integrated Circuit Protection Helps Protect Low-Power Systems

Lightning, inductive load switching, or capacitor bank switching may cause transient overvoltage conditions in AC line voltage applications such as white goods and appliances. Metal Oxide Varistors (MOVs) are typically used for transient overvoltage suppression in AC line voltage applications. However, in these applications there also exists the potential for a sustained abnormal overvoltage/limited current condition that may cause the MOV to go into thermal runaway, resulting in overheating or outgassing.

This paper describes new thermally enhanced MOVs that help protect a wide variety of low-power systems against damage caused by overcurrent, overtemperature and overvoltage faults, including lightning strikes, electrostatic discharge (ESD) surges, loss of neutral, incorrect input voltage and power induction.