V47ZU7PX2855

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The application field and working principle of V47ZU7PX2855, a TVS (Transient Voltage Suppressor)- Varistor- MOV (Metal Oxide Varistor), have been described widely in many technical papers. This paper will elaborate on the application field and working principle of V47ZU7PX2855.

A varistor, also known as voltage-dependent resistor (VDR), is an electronic component which functions as a non-linear resistive component, with its resistivity value depending upon the applied voltage across its terminals. A VDR\'s behavior typically has several characteristics: the resistance quickly drops if the forward bias voltage increases, but the reverse bias resistance remains constant or changes very slowly. Varistors are usually made of zinc oxide pellets (ZnO), and are available in both AC and DC types. This type of varistor is usually used to prevent overvoltage conditions from occurring in an electrical circuit.

V47ZU7PX2855 is a varistor with characteristics of 6000V Varistor, 380pF Rated Capacitance and 25A Rated Surge Current. V47ZU7PX2855 is employed most extensively in the protection of power lines and data lines against electrical surges in the form of high voltages and high currents. The metal oxide varistor is a kind of voltage-dependent resistor device consisting of ZnO varistor material, with a polymeric or stearic acid. It is a composite component made up of a mixture of semiconductor materials with a majority of ceramic oxides, giving it the properties of low resistance in one direction and high resistance in the reverse direction.

The working principle of V47ZU7PX2855 is based on the movement of free electrons in the zinc oxide crystal structure. As the voltage increases, these free electrons will move, resulting in a decrease in resistance. During normal operation, the varistor maintains a relatively low resistance. When a surge or overvoltage occurs, the free electrons move and the resistance of the varistor increases. The increase in resistance leads to a decrease in current. The V47ZU7PX2855 provides effective protection by limiting the voltage and current levels and dissipating the excess voltage or current in the form of heat.

The application field of V47ZU7PX2855 includes power supplies, switching power supplies, motor drives, computers, communication systems, industrial control systems, electronic equipment, external lightning/electromagnetic surge protection and any other electricity supply system that needs protection from transient overvoltage. Besides, V47ZU7PX2855 also provides with surge current suppression capability, self-restoring feature and flame retardant funtion.

In summary, V47ZU7PX2855, a TVS-Varistor-MOV, has been widely used in electrical circuits for its excellent performance in overvoltage protection. Its working principle is based on the movement of free electrons in the zinc oxide crystal structure. It features in power supplies, switching power supplies, motor drives, computers, communication systems, industrial control systems, electronic equipment, external lightning/electromagnetic surge protection and other electricity supply systems.

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