B72220S0231K551

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TVS (Transient Voltage Suppressors) devices are a type of component used to protect against voltage spikes in electronic circuits. Moreover, MOVs (Metal-Oxide Varistors) are also widely used for voltage suppression. When it comes to B72220S0231K551 – a widely used TVS-Varistor device – the application fields and working principle are worth exploring.

Application Fields of B72220S0231K551

B72220S0231K551 is a transistor-like varistor that combines a certain degree of temperature protection. This device is widely used in motorcycle, automotive, and industrial applications. In fact, its application includes circuit protection against electrical surge, overvoltage, overcurrent and reverse polarity.

In automotive applications, B72220S0231K551 is mainly used to protect in-vehicle radios, radios, car alarms. And in industrial applications, it is mainly used in switch games, home appliance control boards, security systems. In motorcycle applications, this device is ideal for providing surge protection to headlights, signal lights, indicators, odometers, horns, and other electronic components. It is also a great choice for protecting the stators of electric bicycles.

Working Principle of B72220S0231K551

B72220S0231K551 is a varistor which work on the principle of voltage threshold protection. The device is a two-terminal semiconductor device that changes its electrical characteristics depending on the applied voltage. As compared to resistors and capacitors, the varistors have different voltage thresholds, allowing them to be applied more precisely.

When an excessive voltage is applied to the device, the varistor changes its properties, resulting in a surge of flow and dampening of the excess current. The working principle can be explained as follows. When the voltage is low, the varistor acts as an insulated component. As the voltage reaches its threshold, the varistor starts to conduct, thus creating a low impedance path to protect the circuit from overvoltage. The higher the voltage, the more the varistor conducts in order to protect the circuit.

To sum up, B72220S0231K551 is a popular varistor device now widely used in automotive, motorcycle, and industrial applications for providing protection against voltage surge, overvoltage, overcurrent, and reverse polarity. This device changes it electrical properties based on the applied voltage, thus providing effective protection against excessive voltage.

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