ROV20-561K-2

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TVS - Varistors, MOVs

Transient Voltage Suppressors (TVS), commonly referred to as Varistors, are one of the most commonly used protection components. They are designed to protect sensitive electronic components from damage due to power surges, lightning strikes, electrostatic discharge (EDS), and other voltage overs. TVS come in a variety of packages, ranging from 0201 to 8 mm DPAK, all of which are designed to prevent the destructive pulses created by external sources from damaging sensitive circuit components. Metal Oxide Varistors (MOVs) are a type of device which has similar uses and electrical properties to TVS but is offered in larger packages.

The ROV20-561K-2 is a type of Varistor designed for overvoltage protection. It features a built-in TVS diode friendly with flywheel technology which helps protect the components in a low power surge by increasing the clamp voltage. The 561K-2 provides peak current suppression values with no external compensation in terms of changes and clamping voltages. It utilizes a proven two-layer barrier that separates the diode string from low-power events, allowing for full protection from high intensity transients. The component also features an advanced suppression system that helps protect against longitudinal waves that can cause current breakdowns.

The core working principle of the ROV20-561K-2 is similar to other Varistors; it diverts the pulse energy away from the sensitive components by shunting the voltage away from the circuit and towards a more dispositive path. The materials used in the Varistors create a resistance to current, and that limits the amount of voltage that will flow through the circuit. As the input voltage rises, the Varistor quickly blocks the line current and drives the voltage back down to the acceptable level.

The ROV20-561K-2 is mainly used for the protection of industrial submetering, motors, and other pulse-sensitive devices. Due to its high-energy pulse protection rating, it is suitable for many applications, including those where hazardous voltages and currents can be expected. It is also frequently used as line isolation for telecom installations and data transmission lines, as well as low voltage DC/AC testing, current shunt, and glitch suppression.

In summary, the ROV20-561K-2 Varistor is designed for overvoltage protection in a variety of applications. It offers peak current suppression values with no external compensation, and utilizes a proven two-layer barrier to separate the diode string from low-power events. The component is mainly used for the protection of industrial submetering, motors, and other pulse-sensitive devices, as well as line isolation for telecom installations and data transmission lines.

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