B72220S0301K551 Circuit Protection

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TVS (Transient Voltage Suppressor), MOVs (Metal Oxide Varistors) and B72220S0301K551 are all devices that are designed to protect electronics from surge damage. They are used in areas such as power line, data line, communication and audio-video equipment protection. The B72220S0301K551 is a type of TVS - Varistor. This article will discuss the application fields and working principle of the B72220S0301K551.

The B72220S0301K551 is a 5.5 mm square Varistor which is designed to provide protection from transient surges of high voltage. It is as an alternative solution to MOVs or silicon-based varistors which require higher circuit height and are more expensive. It can be applied in areas such as Solar, Set top box, Telecommunications, Automotive and consumer electronics.

The B72220S0301K551 is a surface mount device. It is designed to suppress voltage transients on two-conductor lines such as in power supply and telecommunications systems. It can be used in applications such as in telecommunications, industrial, military, and medical systems. It is also suitable for consumer electronics, such as set-top boxes, automotive entertainment systems, gaming platforms, and other related applications. The B72220S0301K551 is a discrete component designed with power dissipation ratings up to 400W and features a low leakage current.

The working principle of B72220S0301K551 is based on a nonlinear resistance that is formed due to the presence of ZnO grains (Zinc Oxide) within the semiconductor material. When a high voltage pulse, such as a lightning strike, hits the varistor, it acts a capacitor to reduce the voltage. It works by conducting a large surge current away from the load to the transistor. The Varistor will be destroyed or rendered inoperable in the event of a large surge, ultimately resulting in the requirement of a device replacement.

The B72220S0301K551 is designed with Japanese and IEC safety standards in mind. It has UL, cUL, VDE, PSE, CCC and RoHs certifications. This ensures that it withstands higher voltages compared to other varistors. It is also compliant with IEC 60950 and HAZLOC standards. The Varistor provides high surge current protection and has a low leakage current capability.

The B72220S0301K551 is a reliable, cost-effective surge protection solution for various applications in telecommunications systems, consumer electronics, automotive systems and industrial systems. It has reliable performance and safety certifications that make it a great option for protecting sensitive electronics. Furthermore, its small size reduces the circuit height, making it a great solution for applications with limited space.

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