V18MLA0805T

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The V18MLA0805T is a multi-layer avalanche metal oxide varistor or MOV. It is a component designed to provide protection against voltage transient overshoot, commonly referred to as “surges”. This component is an ideal solution when looking for a robust and compact protection device.

The V18MLA0805T belongs to the TVS – Varistors, MOVs family which stands for Transient Voltage Suppression. This particular type of component is used in applications such as power supplies, networking and telecom/signal processors. This MOV is a common component that offers excellent protection for EMI (electromagnetic interference) or ESD (electrostatic discharge) transient overshoots.

The V18MLA0805T is a small, 0805-sized component that utilizes a Multi-Layer Avalanche technology to provide a voltage varistor that meets the stringent electrical and environmental requirements of many telecom and industrial applications. Its working principle is that it has either two or three layers of metal oxide material encased between two electrodes. The Electrodes are composed of silver/nickel, and the metal oxide elements are typically tin, zinc, lead-bearing oxide. The important feature of the MOV is the Varistor Voltage which defines at which level the device reacts. This level of voltage is typically in the range of 18V-50V, depending on which particular device is being used.

When high voltage transients occur, the metal oxide material in the MOV will switch from low resistance to high resistance which acts as a shunt device, dissipating the electrical energy into heat. This protects the device or component connected behind the MOV from damage due to the transient. This type of protection is essential in applications that require higher levels of reliability and protection.

The V18MLA0805T is rated for 10s of amps of load current but it is also very fast acting, and able to react to voltage transients in less than 1ns. This ensures optimum reliability and protection of the connected components. It has an operating temperature range of -55°C to +85°C, and a Response Time of less than 1ns.

In conclusion, the V18MLA0805T is a robust, fast-acting component designed to provide protection against transient overshoot. It belongs to the Varistors, MOVs family and can be applied to power supplies, telecom and industrial applications requiring higher levels of reliability and protection. Its working principle consists of two or three layers of metal oxide switch from low resistance to high resistance which acts as a shunt device dissipating the electrical energy into heat. It is rated for 10s of amps load current, has an operating temperature range of -55°C to +85°C and a reaction time of less than 1ns.

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