V420LT10P

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TVS - Varistors, MOVs, are part of the surge protection device family that helps protect circuits by clamping and diverting surge current. The V420LT10P is an example of such a device, designed to protect lines and equipment against 390V surge. This article explores the application fields and working principle of the V420LT10P.

The V420LT10P is a two-terminal, non-polarized, semiconductor transient-voltage-suppression (TVS) diode suitable for use in protecting against high-voltage transients in AC powerlines and DC powerlines. It features an extremely fast response time and withstands high energy spikes via its low leakage current. They are designed to suppress transient voltage events up to 390V, making them suitable for use in AC powered equipment, DC powered equipment, and applications requiring power-line protection.

The V420LT10P can be used in a wide variety of applications, including but not limited to Portable electronics, Automotive electronics, Medical devices, Communication systems, and Industrial systems. Due to its low leakage current, fast response, and stellar surge current ratings, the V420LT10P is a reliable and highly effective surge protection solution.

The V420LT10P functions as a two-terminal, non-polarized, semiconductor, and works as follows:

When an overload or transient voltage event occurs, the V420LT10P ‘activates’ or ‘triggers’. Activation begins when the diode reverse-biases above its peak reverse voltage (PRV). This in turn triggers a series of electrical and physical processes. First, it begins to avalanche; this is the process of electron-hole generation and recombination which creates a current surge. The avalanche and current surge in turn cause Joule heating. This is the process of heat generation from the I2R losses due to the current flowing through the semiconductor.

Once the Joule heating occurs, the V420LT10P is instantly switched to a low-impedance state (typically less than 1ohm) and clamps the high voltage by diverting it away from the equipment. By clamping and diverting the high-voltage event, the V420LT10P protects the circuit from further damage.

The V420LT10P is a reliable and effective surge protection solution and is suitable for a wide range of applications. Its fast response time, low leakage current, and stellar surge current ratings make it an ideal solution for protection against high-voltage transients.

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