The MNR varistor is a ceramic semiconductor made from zinc oxide as a main ingredient and several kinds of additives, which is manufactured in the well-managed processes.
This series is excellent in voltage nonlinearity, surge resistance, and responsiveness to a surge, and also has a characteristic of low clamping voltage. Therefore, this varistor can be used in a wide range of applications, including as measures against a surge for various types of electronic equipment, a device of absorbing a switching surge caused by an inductive load, and a device protecting from abnormal voltage.

Features: This varistor is excellent in voltage nonlinearity and can suppress the clamping voltage at a low level. The response is quick. The voltage-current characteristic of this varistor is symmetrical, and accordingly, no follow current is generated after a surge with both positive and negative polarities. This varistor is capable of responding, and is usable in an AC circuit in the as-is state. Small temperature coefficient. Wide serviceable voltage range. High reliability. This varistor is stable for repeated surges.

Applications: Protection from instantaneous overvoltage of various semiconductors. Protection from an inductive lightning surge caused by wiring and communication lines. Protection from a switching surge caused by an inductive load of relays or the like