ROV07-271K

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TVS - Varistors, MOVs are semiconductor components widely used for protection of electrical circuits in industrial applications. ROV07-271K is one type of Varistor, which carries a unique combination of characteristics and features that provide superior protection against transient voltages and currents that can damage sensitive electronic devices. It offers superior performance in transient voltage suppression and it is suitable for continuous voltages up to 250 V.

ROV07-271K consists of a ceramic disk, with a silver alloy electrode in the middle. When an electrical current passes through the electrode, a metal-oxide layer forms on the ceramic disk, which acts as an insulator and impedes the flow of current. The silver alloy also acts as a conductor, allowing the current to pass through the layer and be dissipated. The result is an effective voltage protection against transient voltage spikes and current surges.

ROV07-271K is mainly used in the audio line in professional applications as well as in consumer applications such as amplifiers and mixers. It is also suitable for applications where high voltage transients are expected, such as automotive and power distribution applications. Additionally, ROV07-271K can be used in applications where a low capacitance is desirable, such as in high speed signal lines and where superior ESD protection is needed.

ROV07-271K’s unique structure and design are the main reason for its excellent performance and usefulness in various applications. Its ceramic disk design has an inner electrode made from a silver alloy, which has a high melting point and superior thermal conductivity. This provides excellent heat dissipation and prevents the device from degrading due to temperature increments. The outer electrode layer of the device is mainly made of a dielectric material to prevent over-voltage. In addition, there is an additional layer, called a “zinc oxide” layer between the inner and outer electrodes, which serves as a contact barrier to reduce the peak voltage.

ROV07-271K’s working principle is based on the voltage-breakdown effect, which is commonly referred to as the “Zener Effect”. When the voltage reaches a certain level, a current starts flowing through the varistor and dissipates the transient voltage. This current increases with the voltage and will reach a certain limit, known as the “clamping voltage”. At this point, the varistor will act as an open circuit and will stop any further current. The amount of current passed before the varistor reaches the clamping voltage is determined by the varistor’s characteristics.

The major applications for the ROV07-271K Varistor include audio line protection, automotive voltage protection, power distribution, and signal line protection. This device offers excellent ESD protection and a low capacitance, which make it suitable for high speed signal line applications. Additionally, the device is designed to offer superior thermal protection for sensitive electronic devices. This makes it the ideal solution for high-end industrial applications.

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