B72240L0251K100

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TVS (transient voltage suppression) devices have been a vital part of modern electronics and industrial automation systems for several decades. Varistors, MOVs (metal oxide varistors), TVS diodes, and thyristor surge suppressors are some of the important components used to provide transient overvoltage protection in critical applications.

B72240L0251K100 is a unidirectional varistors which belongs to a “family” of TVS devices. These devices are designed to protect against transient surges of current and voltage in applications where a wide dynamic range of current and voltage is encountered. The B72240L0251K100 offers high performance while maintaining cost-effectiveness, an important factor for many industrial automation applications.

The application field of B72240L0251K100 includes: communication networks, telecom, industrial systems, computing systems, data loggers, motor control systems, and several other applications. It provides superior protection against transient events of voltage and current ranging from peak surge currents of 10kA to holding voltages of 250V. The device is small in size and features easy mounting. It has excellent electrical characteristics such as response time, peak surge current capability, and repetitive transient current capability.

B72240L0251K100 devices use metal oxide varistors (MOVs). This type of varistor is made using a ceramic material that has a property commonly called “non-linear”, meaning that it doesn’t behave linearly in response to voltage or current. The B72240L0251K100 devices are specifically designed to be unidirectional, which means they can only operate in one direction, allowing them to protect against transient overvoltage and conductive lightning events.

The working principle of B72240L0251K100 is based on the principle of “voltage clamping”. When the transient voltage increases beyond a certain level (due to a surge), the voltage across the MOV starts increasing, but not more than the designed value. This is because when the voltage across the MOV increases, the current through the MOV also increases. The heat generated by this current and the subsequent rise in temperature causes the varistor to become more resistive. This results in a lower current flow and hence a stabilized voltage (clamped voltage).

To sum up, B72240L0251K100 is a unidirectional varistor designed to protect against transient surges of current and voltage in applications where a wide dynamic range of current and voltage is encountered. The device utilizes metal oxide varistors to protect electronic components from damages caused by transient events. Its working principle is based on the principle of “voltage clamping” and it is suitable for a wide range of applications such as communication networks, telecom, industrial systems, computing systems, data loggers, motor control systems, and more.

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