B72250L0231K102

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A B72250L0231K102 Varistor is an electronic component that absorbs transient voltage spikes, dissipates their energy and limits the peak voltage to predetermined values. Varistors are also known as voltage dependant resistors, surge stoppers, or simply MOVs (Metal Oxide Varistors). The technology provides a broad range of different solutions to fit specific application needs.

Varistors are available in a variety of designs, from disc-shaped and square pin shaped, to larger SOD skirt and radial designs. Each has unique characteristics to suit a specific application. For example, the B72250L0231K102 has a small SOD skirt and radial package, making it ideal for use in confined space or where weight is an issue.

Application Field

A B72250L0231K102 Varistor may be used in a wide range of applications, such as power supplies, surge protection, adjustable power supplies, inverters, and other transients in electronic systems. The device is well suited for applications where there are both high voltage and low-level electrical stress, such as automotive power systems. It is also commonly used in network switches, PC motherboards, and other electronic equipment.

Applications of the B72250L0231K102 Varistor\'s include power supplies, such as automotive vehicle charging or EPS performance systems, AC power protection, energy saving lighting systems, computers, laptop and cell phone overvoltage protection, and power over Ethernet.

Working Principle

A B72250L0231K102 Varistor is a nonlinear resistor designed to function as a voltage-clamp device. It is composed of several layers of zinc-oxide and an extra bonding layer. The device\'s internal construction is designed to create a voltage-dependent resistance: as the applied voltage increases, the effective resistance of the Varistor decreases. When a sudden voltage spike in excess of the specified voltage parameter is applied, the varistor will instantly change from a high resistance state to a low resistance state and absorb the energy.

The mechanism of energy absorption is based on an electro-mechanical action, which is a result of a shear force applied to the zinc-oxide layers. During an overvoltage event, the current passes through the varistors ZnO layers and forces the atoms within it to move apart, causing them to move to different portions of the varistor. This causes the layer\'s resistance to decrease rapidly. The energy absorbed by the Varistor is converted to heat, which is then dissipated.

The B72250L0231K102 Varistor is designed to withstand a wide range of transient voltage spikes over short periods of time. The device is typically rated to operate in temperatures ranging from -40C to +105C, and to withstand peak voltages of up to 16V, depending on the model. The device has an excellent surge capability and an excellent time-to-trigger response.

In conclusion, the B72250L0231K102 Varistor is a small but effective component capable of handling high voltages in a range of applications. The device is designed to withstand a wide range of transient voltage spikes over short periods of time, and is an ideal choice for use in power supplies, surge protection, adjustable power supplies, inverters, and other transients. in electronic systems.

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