V18MA1S

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Varistor devices are able to dissipate an extraordinary amount of energy which makes them suitable for use in voltage protection applications. The V18MA1S is an example of a varistor device which offers superior transient protection in automotive applications. This article will discuss the application field and working principle of the V18MA1S.

The V18MA1S is a metal oxide varistor which operates with a breakdown voltage of 18V and a maximum peak surge current of 3A. It is designed for direct connection in protected circuits, thereby saving customers connection costs. The device employs an advanced avalanche broken down technology which offers superior transient voltage suppression performance in harsh environments such as automotive, telecom, and industrial applications. It is able to provide valuable performance protection in the vicinity of lightning strikes, power surges, and EMI.

The device has a solid-state structure with low capacitance and ESR. This makes it suitable for high-frequency applications that require low losses. It also has a high insulation resistance and is resistant to corrosion, contaminants, and dust. This makes it ideal for robust applications in harsh environments. The V18MA1S has a small size, making it appropriate for space-critical applications.

The working principle of the V18MA1S is based on variable resistance. The device contains a solid-state metal oxide film which acts as an energy absorption element. The metal oxide film within the device is formed by combining two different metals into one with a layer of dielectric material between them. When a voltage is applied to the device, the dielectric material breaks down and allows current to flow. This increase in current causes the metal oxide film to expand, reducing its resistance and allowing more current to flow. This process repeats itself until the transient voltage peaks or the maximum energy rating of the device is reached. Once either of these limits are exceeded, the device will no longer provide protection.

The V18MA1S also employs advanced avalanche breakdown technology which allows for superior protection in automotive, telecom, and industrial applications. The avalanche breakdown process begins when the applied voltage reaches a certain threshold. At this point, the amount of electric field in the device increases significantly which causes a large amount of charge carriers to move across the dielectric media. This causes a positive feedback loop which increases the current until the system has fully discharged and the voltage has been reduced.

The V18MA1S metal oxide varistor device is an ideal choice for lightning protection and other voltage surge applications in the automotive, telecom, and industrial sectors. It offers superior performance in harsh environments and is suitable for space-critical applications. With a breakdown voltage of 18V, a maximum peak surge current of 3A, and advanced avalanche breakdown technology, the V18MA1S is an excellent choice for high-frequency applications with minimal losses.

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