B72660M0231K072 Circuit Protection

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TVS (Transient Voltage Suppressors) and MOVs (Metal Oxide Varistors) are two common classes of voltage protection devices used to protect electronic systems and components. The B72660M0231K072 is an excellent example of such a device, providing high surge protection and reliable performance. In this article, we will examine the application fields and working principle of the B72660M0231K072.

Application Fields

The B72660M0231K072 is suitable for both AC and DC applications, and is particularly well-suited to automotive and industrial applications. This is because it is designed to be extremely durable, with surge ratings up to 30kA and a wide operating temperature range of -40°C to +125°C. Its “Glow Wire” classification makes it suitable for use in hazardous locations, and its UL94V-0 flammability rating means it meets limits for flame spread and smoke production. Finally, its excellent electro-dynamic performance and lightning strike immunity make it perfect for use in lightning-prone areas.

Working Principle

The B72660M0231K072 is a metal oxide varistor (MOV) device, which works by “clamping” voltage to a safe level. When the device is exposed to a surge or overvoltage, the MOV will allow the excess current to pass through, while simultaneously limiting the voltage to a safe level. The device is also protected against overvoltage and reverse polarity, meaning it can be used in any application where such conditions may occur.

The B72660M0231K072 consists of a multi-layer sandwich consisting of an electro-dynamic outer layer and an inner core of metal oxide material. The electro-dynamic outer layer is designed to withstand very high temperatures, while the inner core is designed to allow the current to pass through without damaging the device. The inner core material is designed to absorb and dissipate the excess voltage, while the electro-dynamic layer is designed to keep the current flowing in a safe direction.

During normal operation, the MOV device will allow the current to pass through unhindered. However, when an overvoltage or surge occurs, the MOV will clamp the voltage and limit the current to a safe level, which minimises the risk of damage to the connected components.

Conclusion

The B72660M0231K072 is a durable and reliable Varistor which can be used in a variety of applications. Its high surge ratings, wide operating temperature range, and excellent electro-dynamic performance make it ideal for protecting components from overvoltage, surges, and lightning strikes. Its UL94V-0 flammability rating also means it is suitable for use in hazardous environments. Finally, its multi-layer design ensures that it can handle both AC and DC applications, as well as reverse polarity.

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