ROV20-102K

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The ROV20-102K is one of the most common types of transient protection components known as TVS- Varistors, MOVs. A varistor, also known as a VDR (voltage dependent resistor), is a two terminal solid state device designed to provide protection against transient over voltage signals. The ROV20-102K is a non-polar, axial leaded, surface mount device specifically designed for transient voltage suppression. It is a highly reliable, low cost, solid state component that provides both protection and EMI suppression when used in an application.

The ROV20-102K is a widely used varistor for a range of applications such as automotive, industrial, and consumer electronics. The ROV20-102K is typically used in applications where there is a need to protect the electronic components from damaging over voltages. These over voltages can be caused by external sources, such as static electrical discharge, line surges, and lightning, or internal sources, such as malfunctions in the device or other components. By preventing the over voltage signals from reaching the sensitive electronics, the ROV20-102K can help prevent malfunction or destruction of the electronic components.

The ROV20-102K is primarily composed of two parts, the semiconductor material, and metal oxide layers which form the actual varistor. The semiconductor material is usually silicon carbide, a material known for its high electrical breakdown voltage. The metal oxide layers are composed of metal oxides such as zinc oxide, which have a high dielectric constant and good electrical performance. These metal oxides are what give the device its non-polarity and ensure that it will not damage the sensitive electronics with a direct reverse voltage.

The working principle of the ROV20-102K is as follows. When an overvoltage is applied to the device, the metal oxide layers act as a series of capacitors and form a capacitive divider, which divides the voltage between them. This results in the ROV20-102K having a limited peak-to-peak voltage differential across the device. The breakdown voltage of the device is determined by the design of the oxide layers, as well as the reverse breakdown voltage of the semiconductor material. Once the breakdown voltage is reached, the reverse current flow through the device is limited, which helps protect the connected system from any further overvoltage.

In addition to protection, the ROV20-102K can also provide EMI suppression. This is due to the capacitive divider, which is formed by the metal oxidation layers. The capacitive divider absorbs and dissipates high frequency signals which helps to reduce the amount of noise and interference in the signal that can cause damage to the system.

The ROV20-102K is a widely used and versatile device for a range of applications. Its ability to protect and suppress transient voltage spikes makes it an ideal choice for automotive, industrial, or consumer electronics applications. It also has a wide operating temperature range of -55°C to +150°C, making it suitable for a variety of environments.

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