VE1206M151R006 Circuit Protection

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VE1206M151R006 is a type of metal-oxide varistor (MOV), and is widely applied in many fields for transients suppression or circuit protection. This MOV type are used to redirect, limit, and dissipate excess energy created by transients. Its working principle is to provide low-impedance path to protect the circuits against voltage transients. This article is an overview of the application fields and working principle of VE1206M151R006.

Applications

Applications for VE1206M151R006 include surge protection, clamping to protect from destructive overvoltages, and immunity enhancement. It is often applied to protect AC power or data lines that come from a thunderstorm, lightning, or electromagnetic interference (EMI). Specifically, the application includes power supply lines, output circuits of digital logic and large scale integrated circuits, communication circuits, tiller motors, and various motion control components.

This type of MOV is also widely applied in AC power protection. In AC power equipment, the input voltage is usually not steady. Surge voltage from lightning, switching, malfunctions, and EMP can cause electronic devices to malfunction and fails to work. Therefore, in order to protect the AC power supply, an MOV is used to absorb the extra energy generated by the surge voltage. MOVs can provide a low-impedance path for the excess energy, thereby protecting the sensitive components from damage.

Working Principle

MOVs are non-linear components and are used to suppress large transients. The components that are commonly used in electronics are based on zinc oxide (ZnO) and consist of two electrodes covered with a thin-layer of zinc oxide crystals. The MOV has a threshold voltage, and only when the voltage exceeds this threshold, the MOV will begin to conduct. When the applied voltage exceeds the rated limit, the MOV starts to conduct which limits the above voltage. By doing this, MOV prevents the damaging incoming voltage to the connected system.

The VE1206M151R006 is a non-linear resistor that limits the voltage coming into the system. It will enter into the avalanche breakdown at the breakdown voltage. When it enters into the avalanche breakdown, the voltage across the varistor will drop instantaneously and remain at a low value. This low voltage will absorb the excess energy that comes from the transients and will protect the system.

Essentially, the working principle of the VE1206M151R006 is to limit and absorb the voltage transients by providing a low-impedance path for the excess energy to be dissipated. This will protect the sensitive components from possible damage caused by the transients.

Conclusion

In conclusion, the VE1206M151R006 MOV is a metal-oxide varistor that is widely used for surge and transient suppression, clamping to protect from destructive overvoltages, and immunity enhancement. It provides a low-impedance path for the excess energy created by transients, thereby protecting the sensitive components and systems from damage. This article has provided an overview of the application fields and working principle of the VE1206M151R006.

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