TVS - Varistors, MOVs, B72670M1140K072 application field and working principle

TVS (Transient Voltage Suppressor) is a nonlinear resistive component that can instantly absorb excess voltage and discharge the energy associated with the excess voltage into the ground as a heat. Varistors, Metal Oxide Varistors (MOVs) are the most common types of TVS. B72670M1140K072 is one of the MOVs which includes components of ceramic disc and two metal electrodes connected to the lead contacts. This article will discuss its application field and working principle.

Application Field

MOVs are often used for protecting sensitive electronic equipment against electrical transients such as voltage spikes, electrostatic discharges, load dumping, and lightning strikes. This type of protection is often referred to as surge protection. The MOV is very different from a fuse or other circuit protection device, because it can absorb large transients up to thousands of volts and then reset itself. B72670M1140K072 is designed to offer superior surge protection and can be used in a variety of applications such as automotive, home appliances, medical devices, industrial control systems, and more.

Working Principle

As the MOVs are non-linear components, they can have different values of resistance at different voltages. When there is a voltage difference across the MOV, it will allow a precise current to flow through it. This current will generate heat, which is then dissipated into the air. The amount of power dissipated depends on the voltage across the MOV and the current across it.

At a very high voltage, the resistance of the MOV will drop significantly, which allows a large amount of current to flow through it and generates a large amount of heat. As a result, the high voltage is quickly discharged with the help of this phenomena to protect the devices connected to it. The MOV will then reset itself to its normal operation state and is able to protect further transients.

Conclusion

In conclusion, B72670M1140K072 is an MOVs designed to protect sensitive electronic equipment against transient voltages. Its application includes automotive, home appliances, medical devices, industrial control systems, and more. When there is a voltage difference across the MOV, a precise current flow through it and generate heat to discharge the high voltage and protect the device.