ROV14-820K-S

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TVS described as Transient Voltage Suppressors, Varistors, and MOVs (Metal-Oxide Varistors) are commonly used in different electrical line protection applications. The ROV14-820K-S is one of the most common varistors. It is a thermally protected Voltage Dependent Resistor (VDR) that is used in different circuits to protect against voltage transients and spikes.

When there is a voltage transient or spike, the ROV14-820K-S senses the increase in the peak voltage and initiates the breakdown of the dielectric barrier which causes an avalanche of electrons over the diode junction area. This change in the threshold voltage level triggers the shunt current to be diverted to the ground, thereby providing a transient suppression that prevents the transient from passing through the circuit.

ROV14-820K-S, being an optimal voltage-dependent resistor (VDR) of 14 kV peak value, is widely used for ensuring peak voltage protection. It has been specifically designed for surface mounting and comes with a very low clamping voltage, starting at just 820V. To top it off, it has a response time rate of less than 5ns which is considered pretty fast. It is made of a flame retardant epoxy material and its high surge capability gives it high reliability and an excellent resistive-capacitive (RC) network.

ROV14-820K-S is most predominantly used in communicational line applications such as telephone systems, signaling systems, data networks, and audio systems, as well as applications in industries such as medical, automotive, industrial, and military, to protect against transient voltage spikes. It is also used for the protection of low-voltage circuit components such as solid-state Relays (SSRs). As a primary protection component, it also offers protection against ESD, EFT, and lightning impulse.

The low operational voltage of this Varistor makes it well-suited to high touch-current applications where many components have to be connected to a common ground. It is also capable of functioning reliably at high frequencies, which is a notable feature for ATE and other high-speed digital systems. Additionally, its low temperature coefficient helps to maintain a stable and predictable operation over a wide temperature range.

ROV14-820K-S provides an excellent combination of fast response time and low operating resistance, making it the ideal choice for many high-power applications. Not only does it provide superior surge protection performance compared to almost all other metal-oxide varistors, but it also offers a variety of other advantages, such as low self-inductance, low leakage current, and low capacitance.

In summary, the ROV14-820K-S varistor provides peak voltage protection against transient voltages, making it an ideal component for protection circuits in many high power and high touch-current applications. Its fast response time, low operating resistance, and high surge protection capability make it one of the most reliable and robust varistors in its category.

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