9401600000

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS (Transient Voltage Suppressors) and MOV (Metal Oxide Varistors) devices are designed to protect electrical and electronic circuits from overvoltages. Often confused with one another due to similar terminology in their abbreviated names, these surge suppression devices offer different voltage clamping and dissipation characteristics for certain conditions. Utilizing different design principles, TVSs and MOVs vary significantly in their application field and working principle.

In the field of surge and overvoltage protection, Metal Oxide Varistors (MOV) are prevalently used. This type of surge suppressors operate by exploiting the properties of ZnOx particles in a ceramic and polymeric form. MOVs form the main bulk of electrical component surge protection products. This type of surge protection works through reducing the current spikes and providing the majority of protection for such phenomena as lightning strike, overhead power lines, and current transients.

Transient Voltage Suppressors (TVS) are diodes designed specifically for surge and overvoltage protection. They are active devices usually employed in power supplies, receivers and other electrical lines. When overloaded in both directions, they absorb the excess energy and clamp the voltage to safe levels. Those devices include the schottky diodes and power zener configurations. As the lightning voltage surges, the diode will begin to conduct current at a certain voltage level, reducing the voltage and dissipating the energy.

The goal of both TVS and MOV is to protect the systems from unexpected surge voltage. The MOVs act as a voltage clamp while the TVSs dissipate energy by redirecting it to ground. From the point of view of power dissipation, MOVs have the advantage and are better able to handle larger power levels. It has also been said that the TVSs provide a more reliable protection from overloads, as they can detect and thereby react faster than other devices.

MOVs are mostly used for slow or large surges while a TVS device is used as additional protection for particularly large surge currents or to provide a greater level of protection due to its faster response time in complicated circuits. In terms of protecting circuits from electromagnetic pulses, TVSs are more well suited and successful than the MOVs. Additionally, TVSs have better immunity to noise than MOVs.

On the other hand, in terms of cost efficiency, the MOV is cheaper as it requires fewer components than the TVS. Heat durability is also better for MOVs, as TVSs may lose their clamping level when they reach a certain threshold. This makes MOVs more suitable for longer duration pulses, while TVS devices are better able to handle shorter duration spikes.

In conclusion, understanding the differences between MOVs and TVSs is essential in order to properly select the right device for the desired application. Both of these surge suppressors offer specific characteristics that make them better suited to certain circumstances. Understanding their application field and working principle can help bridge the gap between the two.

The specific data is subject to PDF, and the above content is for reference