V150LT1PX2855

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TVS (Transient Voltage Suppressor) devices are designed to immediately clamp voltages which exceed a predetermined level to safe values in order to protect sensitive electronics. Varistors, also referred to as MOVs (Metal Oxide Varistors) are renowned as budget-friendly surge protection devices. V150LT1PX2855, a common MOV, is intended to protect a broad range of electrical equipment from ESD, electrical transients, and EMI/RFI interference. In this article, we will take a look at the application field and working principle of the V150LT1PX2855.

Applications of V150LT1PX2855

The V150LT1PX2855 is a High Performance, Military Grade, Solid-state Varistor with an ultra low leakage current. Due to its superior characteristics, it is used in a variety of high-reliability defense and commercial applications. Typical applications of the V150LT1PX2855 include:

• Defense/Military Equipment –Common applications for V150LT1PX2855 include Military & Aerospace-grade circuit designs, specifically those that require reliable and robust protection from lightning, surges, and ESD pulses.
• Industrial automation –The V150LT1PX2855 is used in industrial equipment like machine controls and medium-level applications which require robust and reliable surge protection.
• Household electronics –The MOV is typically used in household electronics such as washing machines, dishwashers, etc.
• Energy Meters/Data Terminals – The V150LT1PX2855 is used in popular low-end energy meters and data terminals.

Working Principle of V150LT1PX2855

The V150LT1PX2855 is basically a nonlinear resistor whose voltage/current characteristics are highly nonlinear. It is designed with a Zinc Oxide element and special ceramic/polymer multilayer structure. This multilayer structure processes the nonlinearities required for voltage/current suppression. When a transient voltage begins to rise on the power line the V150LT1PX2855 MOV initiates an effective reverse current path which clamps the voltage down to a safe level.

In order to initiate this reverse current path, the voltage should exceed a specific threshold voltage. This threshold voltage is determined by the MOV’s design and it is typically in the approximate range of 3V to 40V. If the voltage exceeds this threshold, the MOV begins to conduct and it reduces the voltage to a safe level.

In general, the V150LT1PX2855 is able to respond to the fast-ramping voltage transients within nanoseconds and clamp them down to safe levels. After the current transient is gone, the MOV instantly stops and reverts to its open-state. As a result, the MOV supplies graceful protection to the powered electronics.

Conclusion

The V150LT1PX2855 is a reliable and robust surge protection device suited for a variety of industrial, defense, and commercial applications. In fact, this high-performance MOV has an ultra low leakage current which further increases its reliability. Additionally, due to its superior nonlinear characteristics, the V150LT1PX2855 is able to clamp down transient voltages to safe levels within nanoseconds.

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