ROV05-621K-S-2

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TVS - Varistors, MOVs are critical components for successful design of circuits or systems involving overvoltage or transient protection. ROV05-621K-S-2 is a typical component of this kind. In this article, a detailed introduction to the application field and working principle of TVS - Varistor, MOV ROV05-621K-S-2 will be given.

ROV05-621K-S-2 is a high performance Tvs-diodes with an improved V-I characteristic curve, which is designed to protect against over-voltage surges, so it is widely used in sectors such as military, automotive, communication, industrial and consumer. ROV05-621K-S-2 typically operates up to 621 Volts and features a peak reverse power dissipation of 500 W.Due to ultra low leakage and extremely low capacitance makes it ideal for ESD protection in high speed data line application.

As for the working principle of TVS - Varistor, MOV ROV05-621K-S-2, it chiefly consists of three parts: substrate material, P-N junction and metal oxide varistor (MOV). The substrate material is a material with a high electrical resistance, which serves as the foundation of the varistor and provides the heat dissipation capacity. The P-N junction is the semiconductor junction between N-region and P-region. This junction is responsible for providing the dynamic resistance that produces a negative resistance characteristic, and thus influencing the varistor’s breakdown voltage. The metal oxide varistor is the heart of the ROV05-621K-S-2. It is made of zinc oxide and other metal oxides. The metal oxide varistor is an epitaxial semiconductor diode with a P-N junction, which is surrounded by a large number of zinc oxide grains. These zinc oxide grains are linked by grain boundaries, which act as a resistor and form a path allowing current to pass through during an overvoltage surge.

In order to ensure the best protection performance, TVS - Varistor, MOV ROV05-621K-S-2 alsofeatures an internal safety thermal fuse, which is designed to provide long-term overvoltage protection. This fuse has a highly sensitive and fast thermal response that is triggered when the junction temperature is exceeded. Once triggered, the fuse will cut off the current, effectively removing the additional energy that is cut off, thereby ensuring the protection of the surrounding components.

In a word, TVS - Varistor, MOV ROV05-621K-S-2 is a kind of very important products for over-voltage protection. Its application field includes military, automotive, communication, industrial and consumer sectors, and it can provide excellent protection for a wide range of electrical components, thanks to its ability to absorb energy during a surge. In addition, its highly sensitive and fast thermal response ensures that the product can provide the necessary protection in a timely manner.

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