V421DHB34

TVS - Varistors, MOVs are a type of Electronic Component that are used to provide protection against power over-voltage conditions.The V421DHB34 is a Varistor, which is a nonlinear resistor formed by connecting a series of alternating layers of ceramic material and metal electrodes that has the ability to react to voltage surges and provide the user with protection from overvoltage situations. When the voltage applied to the circuit exceeds its rated voltage, the resistance of the varistor rapidly increases, thereby providing a high degree of protection to the device.

The V421DHB34 has a voltage range from 10V to 420V and a rated voltage of 300V, with a rated breakdown voltage range of 300V to 420V. It has a high surge capability and low clamping voltage, making it ideal for a variety of applications. The maximum surge current and peak pulse current are 400A and 3000A respectively.

The V421DHB34 is typically used in a wide range of applications, such as automotive, industrial, consumer, and computer applications. It can be used as an over-voltage protection device, a protective device for grounding of a circuit, or as a source of transient over-voltage protection. In automotive applications, the varistor is used to protect electronic systems from radiator leak induced over-voltage conditions and provide over-voltage protection for components. In industrial applications, it is used to protect high-power outputs and equipment from surge voltages. Additionally, it can be used as a surge protective device in water pumps, lifts, and elevators. In consumer applications, it is used as an over-voltage protection device in home appliances such as air conditioners, TVs, microwaves, and washing machines. Lastly, the V421DHB34 is used in computer applications to protect against over-voltage conditions in peripherals such as printers and scanners.

The working principle of the V421DHB34 is simple and straightforward. When the circuit voltage rises above the rated voltage of the device, the resistance of the varistor rapidly increases, thus providing protection against power over-voltage conditions. This rapid increase of resistance limits the amount of current that can flow, thereby reducing the risk of damage to the circuit components.

To conclude, the V421DHB34 is an ideal over-voltage protection device for a wide variety of applications. It has a wide voltage range and a high surge capability that provide users with reliable protection from power over-voltage conditions. The working principle is simple and straightforward, and the device is robust and reliable.