B72500E5250L060

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TVS (Transient Voltage Suppression) diodes have played an integral role in the protection of sensitive electronic equipment from a variety of threats such as voltage spikes, voltage transients, and electrical surges. Varistors, also known as Voltage Dependent Resistors (VDRs), and Metal Oxide Varistors (MOVs) constitute one type of TVS diodes. The B72500E5250L060 belongs to this class of TVS diode. This article aims to discuss the application field and working principle of the B72500E5250L060:

Application field

The B72500E5250L060 is mainly used in power supplies and for telecommunication subsystems. It can also be used in any low-voltage, low-current system requiring surge protection. In power supplies, it is used to provide overvoltage protection and enhance the safety of the equipment.

It is suitable for use in both AC and DC circuits operating at up to 250V. The main application of the B72500E5250L060 is on power entry modules and also for protecting LED drivers. It is suitable for use in both low-impedance and high-impedance circuits. Furthermore, it is also designed for use in telephone systems for surge protection of sensitive electronic circuits.

Working principle

The B72500E5250L060 is a Metal Oxide Varistor (MOV) that works on the principle of voltage-biased nonlinear semiconductor resistance. The prime function of this device is to provide over-voltage and EOS (Electrostatic Discharge) protection for electronic circuitry. It is mainly used for suppressing surge voltages in low voltage, low current systems.

MOVs contain a ceramic-insulator core with two electrodes attached to it. When the voltage across its electrodes increases to a fixed threshold value, the device enters an electrical conducting state. During this state, the device draws a significant amount of current, which dissipates in the form of heat. Thus, any excessive voltages present in the circuit, beyond the threshold value, can be safely dissipated by the MOV.

The B72500E5250L060 is designed to dissipate a maximum of 31A of current and is characterized by a unidirectional avalanche characteristic. This means that it can provide a higher voltage damping with relatively low voltage drops compared to bidirectional MOVs. This makes the B72500E5250L060 a suitable choice for systems that require both overvoltage and EOS protection.

Conclusion

The B72500E5250L060 is a MOV that is designed for surge protection of sensitive electronic circuits. Its main application is in power entry modules and LED drivers. It is also suitable for use in AC and DC circuits operating up to 250V and is characterized by unidirectional avalanche characteristics. The working principle of the device is based on voltage-biased nonlinear semiconductor resistance. It can provide a higher voltage damping with relatively low voltage drops compared to bidirectional MOVs, thus making it a suitable choice for systems that require overvoltage and EOS protection.

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