V20P25P

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TVS - Varistors, MOVs, are components that protect circuits from overvoltage transients. V20P25P is a common form of varistor or minimum off-state voltage regulator that provides linear cone opening adjustment.  It is also used in applications for extreme voltage transient protection circuit.

A V20P25P consists of two metal oxide varistors (MOVs) and a thermistor. The MOVs offer protection against voltage spikes and current surges while the thermistor provides protection against abnormal temperature rise. The MOV clamp produces a linear frequency conduction character, allowing the maximum peak voltage to vary depending on the circuit\'s input frequency. The thermistor provides additional protection by controlling the RMS voltage produced by the MOVs.

V20P25P applications include circuit protection in AC and DC circuits, EMI/RFI noise reduction/filtering, inductive loads, and overvoltage protection in aviation. In order to ensure the highest level of surge protection, V20P25P must be carefully matched with the application circuit\'s operating current and voltage waveforms. Additional protection can be achieved by using multiple MOVs or thermistors.

The working principle behind V20P25P is simple. When the input voltage exceeds the specified clamping voltage of the V20P25P, the MOVs and thermistor trip to prevent the voltage from reaching the electronics. The MOVs act as a clamp or valve to reduce the voltage and the thermistor helps protect against extreme temperature rise.

To ensure the highest protection levels, engineers should keep in mind the following principles:

• MOVs should be properly sized for the specific application.
• High resistance thermistors should be used to prevent problems due to current leakage.
• MOVs should have adequate current ratings to prevent overloading.
• The V20P25P should be installed and operated in accordance with manufacturer\'s specifications.

When used correctly, V20P25P components can provide reliable protection for sensitive electronic circuits. However, the user should take into account all factors including cost, size, operating temperature, system voltage, and current rating before selecting the best protection device for their application.

Keep in mind that the V20P25P may not be able to provide the necessary protection in conditions of extreme high voltage or current. It is important to discuss these requirements with the application engineer before using the V20P25P to ensure the long-term reliability of the circuit. In addition, regular maintenance of the device should be performed to ensure optimal performance.

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