Zinc Oxide 8/20μS Sensitive Resistor MOV Varistor For Over Voltage Suppression

A varistor is a voltage protection component with non-linear volt-ampere characteristics, commonly used to absorb transient overvoltages, suppress surge impacts, and protect precision electronic circuits. Its core material is zinc oxide (ZnO) polycrystalline ceramic, internally composed of numerous grains and grain boundaries. When the voltage exceeds a threshold, the resistance drops instantaneously, rapidly shunting current to protect downstream devices.

This series of varistors achieves a nanosecond-level response speed, suitable for industrial electronics, communication equipment, smart home appliances, power supply equipment, and other scenarios, providing reliable and efficient overvoltage protection for systems.

1. High-Speed ​​Response and Excellent Surge Absorption Capability

Variators feature nanosecond-level response speeds, capable of instantly absorbing surge energy generated by lightning strikes, switching operations, and inductance abrupt changes, providing reliable protection for sensitive devices such as ICs, MOSFETs, and diodes. High-energy models can withstand larger peak currents, achieving stable protection under higher voltage surges.

2. Stable and Reliable Multilayer Ceramic Structure Design

Made using a ZnO-NiO-CoO polycrystalline material system, the varistor exhibits stable grain boundary varistor characteristics and good voltage consistency. Combined with high-insulation packaging materials, this results in a longer lifespan, lower leakage current, and higher environmental resistance.

3. Comprehensive Safety and Compatibility

Variators are suitable for AC/DC power supply circuits and can be matched with TVS, fuses, thermistors, and other protection devices to form a multi-level protection network. Derating designs can be implemented according to actual needs to ensure long-term reliable operation.

Variators are widely used in industrial control, power supply equipment, communication systems, consumer electronics, and instrumentation.

Typical applications include:

• Suppressing transient overvoltages in AC/DC power supplies
• Protecting semiconductor devices such as ICs, MOS transistors, and thyristors
• Absorbing reverse overvoltages generated by solenoid valves and relays
• Lightning surge protection and power grid noise absorption
• Transient voltage protection for signal and communication ports
• Various household appliances, power adapters, charging stations, energy-saving lighting fixtures, and other equipment.