V22ZT2

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A V22ZT2 is a type of voltage-dependent varistor, which can be used as part of an electrical circuit to protect against over-voltage faults. The V22ZT2 is a varistor with a large peak voltage protection range, making it suitable for a broad range of applications where over-voltage transients must be suppressed.

Varistors are bidirectional devices used in the protection of electrical circuits from over-voltage faults, such as those caused by surge currents, electrostatic discharge, or lightning strikes. They are also commonly referred to as Voltage Dependent Resistor (VDR) or Transient Voltage Suppression (TVS) devices.

A V22ZT2 comprises of a sintered zinc oxide element which is encased in a film insulated resin case. The zinc oxide element is made up of sintered granules, and the insulated resin case helps to maintain the overall stability of the element. As the current travelling through the device is dependent on the peak voltage being passed, the V22ZT2 is able to provide protection against high voltage transients. The casing of the device is made of polypropylene plastic to ensure it is environmentally friendly, and its structure provides an excellent thermal protection.

The working principle of the V22ZT2 is that it acts as a voltage-dependent resistor or a voltage clamp. The resistance of a VDR or a voltage clamp is inversely proportional to the applied voltage on it. When the applied voltage is below a certain threshold, the resistance is very high; when the applied voltage is over the certain threshold, the resistance is very low. Therefore, the V22ZT2 can clamp the over-voltage transients and protect the load circuit connected to it.

The V22ZT2 varistor is widely used in many industrial, automotive and telecommunications applications, such as over-voltage protection of electronic equipment, control systems, power distribution systems and telecommunications systems. It is also used for lightning and surge protection of low voltage DC and AC systems.

The V22ZT2 is also a component of many other devices such as ESD (Electro-Static Discharge) protection modules. It can also be used to suppress high voltage transients in circuits for communication and data systems, as well as for power line conditioning applications.

The V22ZT2 varistor is an effective device for over-voltage protection applications due to its large peak voltage rating. Its high peak current and low clamping voltage capability, combined with its fast response time, make this device ideal for a variety of applications.

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