B72530E1140S272

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Varistors, also known as Voltage Dependent Resistors (VDRs), are devices that offer a non-linear resistance to a current. They are used in electronic circuits as protection circuits that detect when voltage exceeds normal levels and act to reduce the protection from potential damages caused by voltage spikes. MOVs (Metal Oxide Varistors) are a type of varistor, which consists of a metal oxide material embedded in a ceramic material that provides an extra level of protection against voltage transients.

The B72530E1140S272 varistor is an MOV specifically designed for use in lightning and transient voltage surge protection applications. It offers high surge current capacity, 10kA (8/20µs) maximum clamping voltage, and low leakage current. This makes it an excellent choice for protecting equipment such as data and communications equipment, powered equipment, and power-related circuits from transient overvoltage events. It can also be used to protect sensitive electronics from the overvoltage that is generated by ESD events.

The B72530E1140S272 varistor operates on a principle called the “voltage dependent resistance” effect. This effect is what makes these devices so useful in overvoltage protection applications. In a nutshell, the MOV’s resistance will change depending on the voltage level that is applied across it. When the application voltage is low (i.e. there is no voltage spike) the resistance of the MOV is high. When the applied voltage rises to a level that exceeds its threshold, the resistance drops and the device begins to act as a low-resistance/shunt path that diverts the excess current away from the protected circuits and towards ground. This allows the MOV to effectively quench voltage spikes before they cause any damage to the circuit.

The B72530E1140S272 MOV is designed to have a large clamping voltage, which is the voltage at which the device begins to conduct current. This is typically around 10kV for this MOV and provides an excellent level of protection for equipment that is susceptible to overvoltage and ESD events. Additionally, the device is designed to have a low leakage current, which is important in order to ensure that the current flowing through the protected circuit does not exceed safe levels.

In conclusion, the B72530E1140S272 varistor is an excellent choice for protecting equipment from transient voltage spikes and ESD events. Its large clamping voltage and low leakage current make it an ideal candidate for applications where protection from high voltages or power switching is needed. This device is able to reliably provide protection from transient overvoltages while staying within safe operating parameters, making it a great choice for a variety of applications.

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