V27ZA1PX2855

Transient voltage surge suppressors (TVS) serve to protect sensitive electronics from voltage spikes seen on power lines. As transient events become increasingly frequent, guard semiconductor devices, such as varistors, Metal-Oxide Varistors (MOVs) and Silicon Avalanche Diodes (SADs), are employed to absorb and dissipate the voltage energy and protect the system. The V27ZA1PX2855 is an example of such a transient voltage surge suppressor that is used for protection against surge currents.

V27ZA1PX2855 Application Field

The V27ZA1PX2855 is the product of a dependable surge protection component that’s suitable for protecting products from the effects of high surge currents and surrounding electromagnetic fields. It is usually used in end-products like automotive electronics control units, IT systems as well as telecommunication systems. As the device allows fast response to ultrahigh surge currents, it’s suitable for high-reliability applications. Additionally, it is designed for silent operation with minimal interference with the surrounding circuits.

V27ZA1PX2855 Working Principle

The V27ZA1PX2855 is a MOV device designed to withstand and absorb excessive currents and surges. It is composed of six radial leads with two each going in to the center and two connecting to the flanges. The MOV is packaged with two flanges and two insulating disks which form the device’s current handling system. These two disks act as isolators that protect the MOV from other components of the systems. The device starts to conduct when the voltage reaches a particular level and the current is sent through the MOV.

When the MOV receives a surge current, it reacts by clamping the voltage and reducing the current to a safe level in a few nanoseconds. This surge current increases the temperature of the component, and is then sent out to the ground through those two flanges and two external leads. This action of redirecting the surge current outside of the device will limit the current passing through the system. The device will then cool down once the surge current passes and return to normal operating conditions.

Conclusion

The V27ZA1PX2855 is a designed for absorbing excessive currents and surges which makes it perfect for high-reliability applications as well as automotive electronics, IT and telecommunications systems. It works by reacting to high surge currents andClamping the voltage and reducing the current to a safe level. The device will then redirect the surge current outside of the device to limit the current passing through the system, and then cool down and return to normal operating conditions.