V625LT10P

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TVS (Transient Voltage Suppressor) devices, including Varistors, Multi-layer Varistors, and MOVs (Metal Oxide Varistors), are used to protect sensitive electronic equipment from voltage transients, which are short-term fast voltage spikes in the power lines. The V625LT-10P, which is part of the Littelfuse Varistor product family, is an 18mm disc-type varistor specifically designed for overvoltage protection. This article will explain the applications field and working principles of this device.

Applications Field

The V625LT-10P is suitable for protecting sensitive electronic equipment and can be used across a variety of applications. These include parts of the telecommunications, networking, consumer electronics, automotive, and industrial market sectors. Examples include surge protection modules for communication peripherals such as modems and routers, and protection for automotive electronic systems.

The V625LT-10P is designed for overvoltage protection and can be used to protect circuit boards from power surges, developed in both lightning and accidental blasting. The device can be used to protect devices from both high-frequency surges, such as caused by switching loads, and low-frequency surges which are connected with equipment set-up and system powering. The V625LT-10P has an operating temperature range of -40°C to 85°C and is capable of withstanding the most extreme environments.

The V625LT-10P is available in a variety of packages and has several effective design features such as a long lead for easy routing. Its robust design provides enhanced protection of low-voltage systems in multiple market sectors. As a result, this device offers quick and effective protection against power surges and can offer long-lasting performance.

Working Principles

The V625LT-10P is a part of a family of metal oxide varistors, which offer protection against power surges. The device works by clamping the voltage to a specific level, depending on the Varistor’s rating. The Varistor offers protection by providing a low impedance current path when the voltage exceeds the Varistor’s rated value. This causes the Varistor to operate as a low-resistance short circuit, which limits the surge current and reduces the output voltage.

The Varistor is a two-terminal device which is usually connected in parallel with the protected circuit. When the voltage on the Varistor reaches or surpasses the Varistor rating, it begins to conduct and thereby reduces the voltage on the protected circuit. The amount of voltage that is passed through the Varistor is determined by the Varistor’s clamping voltage, which is dependent on both the type and size of the Varistor.

The V625LT-10P utilizes metal oxide varistors to protect against overvoltage. The Varistor consists of a ceramic body and two electrodes. The ceramic body is surrounded by a field of metal oxide particles, which form the nucleus of the Varistor. When a voltage transient occurs, the metal oxide particles become polarized. This causes them to expand and eventually create a conductive path between the two electrodes, thus allowing electric current to flow through the Varistor. The Varistor then limits the voltage to the desired level by decreasing the current through the circuit.

The V625LT-10P provides excellent protection against high-frequency, low-frequency, and high-voltage surges. It offers a long working life and low thermal resistance. Additionally, the device has a wide operating temperature range and can withstand harsh environmental conditions. The V625LT-10P is a reliable, cost-effective solution for protecting sensitive electronic equipment from voltage transients.

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