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TVS - Varistors, MOVs: V42MLA1206WA application field and working principle

Varistor, also known as voltage-dependent resistor (VDR), is an electronic component composed of two or more non-metallic semiconductor materials. Varistors are mainly used to protect sensitive electronic equipment from surges, electrostatic discharges (ESD), and electromagnetic interference (EMI). Due to its many advantages, such as low cost, low price, low noise, simple operation, fast response time, high temperature resistance, strong protection ability, no need to maintain, and widely used in various applications, it is widely recognized and is a widely used surge protection device. The V42MLA1206WA is a type of Varistor, and its application field and working principle are introduced below.

Application Field

Varistors can be used in a variety of areas, including power supplies, telecommunications, automotive electronics, data acquisition, measuring instruments, consumer electronics, LED lighting, and more. V42MLA1206WA is suitable for applications with severe AC voltage surges. It is highly reliable, massively used in consumer electronics, computers, communication systems, safety systems, and other industrial fields.

Working Principle

The V42MLA1206WA is a rectifier type varistor made of an alloy containing zinc, manganese, and a small amount of other metal oxides, such as cobalt oxide, antimony oxide, and bismuth oxide. The silver tunnel filling resin is filled into the groove of the shell. When the ambient temperature is not particularly high, the V42MLA1206WA can conduct current only when the voltage exceeds the rated voltage, and the varistor can absorb energy. Its resistance varies with the amount of absorption energy. The V42MLA1206WA has a very low working current and will be automatically triggered when the circuit surge current increases rapidly. It ensures that the rated voltage in the system is within a range considered safe to avoid damage to any equipment or circuit in the system.

Conclusion

Varistors, such as V42MLA1206WA, have a great application potential in a variety of fields, and it is also a very useful surge protection device. Its working principle is also simple and reliable, highly trusted by customers. It is suitable for applications with severe AC voltage surges, and it plays an important role in consumer electronics, computers, communication systems, safety systems, and other industrial fields.

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