V420LU40BPX2855

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Varistors and metal-oxide varistors (MOVs) are two types of voltage-sensitive devices that have been widely used in applications such as power supplies, surge protection, and EMI/RFI filters. The V420LU40BPX2855 is an all-round voltage-sensitive device available in the market. It is a high-energy, bidirectional, non-linear varistor that functions as a transient voltage suppressor. It is also designed to protect against transient voltages and electrical surges in telecom, power, and consumer electronics.

Application Field

The V420LU40BPX2855 can be used in a broad range of applications, such as:

• Power supplies and circuits
• Surge protection circuits
• Medical equipment
• Telecommunication equipment
• Lightning protection
• Consumer electronics and appliances
• Industrial electronics and automation.

Working Principle

The V420LU40BPX2855 is an electrostatic varistor that is sensitive to voltage changes. It is composed of a sintered ceramic disk that is filled with metal oxide powders. When connected across a power source, the V420LU40BPX2855 becomes saturated and the current can flow through it. At this point, the device starts to act as a resistor and limits the voltage across it. When the voltage rises above the rated breakdown voltage, the device turns into a non-linear conductor and diverts most of the electrical surge energy away, thus protecting the circuits and components from over voltage. This is due to the presence of metal oxide particles in the disk which create a special low-resistance path when the voltage exceeds the permissible voltage limit.

The superior energy absorption rate of the V420LU40BPX2855 makes it ideal for use in many high-voltage protection circuits. Additionally, due to the fact that the device is bidirectional, it can also be used for power spike protection in two-way systems. Furthermore, the device is designed to operate at high temperatures and can sustain up to 125°C, which makes it an effective choice for applications in extreme temperature environments.

Conclusion

The V420LU40BPX2855 voltage-sensitive device is a versatile component that is suitable for many applications, including telecom, power supply, surge protection, lightning protection, and consumer electronics. It is a bidirectional non-linear varistor that is designed to operate at extreme temperatures and can withstand up to 125°C. The device is highly efficient in its energy absorption rate and is designed to divert the electrical surge away from the circuits and components that it is protecting, thus protecting against transient voltages and power spikes.

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