B72214S1140K251

TVS - Varistors, MOVs

Surge protective devices like B72214S1140K251 are extremely important components of any electrical system for the purpose of surge protection. These types of devices are classified into Varistors, MOVs (Metal Oxide Varistors), and Transient Voltage Suppressors (TVS). This article will focus on the application field and working principle of B72214S1140K251, a technologically advanced surge protective device with both Varistor and MOV technology.

Varistor – Overview

Varistors are voltage dependent resistors designed to protect electronic circuits from voltage transients due to lightning strikes or electrostatic discharges (ESD). These transient voltages tend to cause significant damage to electronic circuits, and Varistors are designed to block and absorb transient voltage, thus preventing it from causing any damage. A Varistor is basically a non-linear resistor, where its resistance varies with applied voltage.

MOV (Metal Oxide Varistor) – Overview

MOVs, or Metal Oxide Varistors, are a special type of Varistors that is made from zinc oxide or silicon-carbide varistor materials. Like other Varistors, MOVs are also designed to protect electronic circuits from voltage transients due to lightning strikes or electrostatic discharges. But unlike other Varistors, MOVs have the capability to absorb and block higher magnitude transient voltages and have much higher surge protection performance as compared to the conventional Varistors. This makes them the ideal component for use in heavy-duty and highly sensitive electronic applications.

B72214S1140K251 – Application Field

B72214S1140K251, as mentioned earlier, is a technologically advanced surge protective device, combining both the Varistor and MOV technologies. This device is suitable for Industrial networking, Telecommunication systems, Ethernet, IP and Broadband applications, and other applications that require a high amount of surge protection. These devices also offer higher performance and reliability than conventional Varistors by providing greater surge protection ratings and lower leakage currents.

B72214S1140K251 – Working Principle

The B72214S1140K251 utilizes both Varistor and MOV technology in order to provide the highest level of surge protection. The primary element of this device is made from zinc oxide Varistor materials or silicon-carbide Varistors. These materials are designed to provide a non-linear resistance to the transient voltage thus suppressing it and preventing any damage to the electronic circuits. The secondary element is the MOV, which is designed to further absorb and block any high magnitude transient voltage that is not suppressed by the Varistor, thus providing additional protection.

The way in which the Varistor and MOV work together is as follows. When a transient voltage hits the device, the Varistor will absorb and block it from reaching the protected component. If the transient voltage is too high and is not absorbed by the Varistor, the MOV will take over and further absorb and block the transient voltage, thus ensuring protection from any damage.

In conclusion, B72214S1140K251 is a technologically advanced surge protective device that utilizes both Varistor and MOV technology. This device is suitable for Industrial networking, Telecommunication systems, Ethernet, IP and Broadband applications, and other applications that require a high amount of surge protection. The device works by using the Varistor element first to absorb and block the transient voltage before the MOV element takes over and further absorbs and blocks the transient voltage, thus providing the highest level of surge protection available.