V420LS20APX2855

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TVS - Varistors, MOVs are devices used to protect sensitive electronics. They are designed to absorb, dissipate and regulate the flow of current through a circuit, while preventing dangerous levels of voltage from damaging the circuit. V420LS20APX2855 is a transient voltage surge stopper (TVSS) circuit protection device from Littelfuse. It is a low-loss, low-cost, high-performance solution for protecting telecom Equipment such as router, modem, set-top box, DSL, switch, gateway, etc.

Working Principle of V420LS20APX2855

The V420LS20APX2855 contains a pair of silicon avalanche diodes that are used as a low-impedance, low-capacitance protection device. It features dual-side protection with an internal series connection, which provides low capacitance and fast snapback triggered by the 60V (50V in the US) VDR threshold. This device provides reliable protection against voltage transients that exceed the positive or negative maximum level with minimal energy absorption. The VDR also reduces the voltage to within safe levels, protecting the connected equipment from overvoltage.

The V420LS20APX2855 device also features a transient voltage suppression (TVS) diode, which provides additional protection against voltage spikes and surges. The TVS diode is optimized for low-loss operation and minimizes energy absorption when presented with a transient voltage. In addition, the V420LS20APX2855 has a very low self-heating effect, which reduces thermal stress on the protected circuit and increases its lifetime.

Application Field of V420LS20APX2855

The V420LS20APX2855 is designed for telecom equipment such as router, modem, set-top box, DSL, switch, gateway, etc. This device provides reliable protection against transient overvoltages up to 28V, while maintaining low capacitance in a low voltage drop configuration. This device is also configured to maintain high survivability under extreme high voltages.

The V420LS20APX2855 is a robust solution for a wide range of telecom equipment applications. It offers superior protection against electrical spikes due to lightning, AC power outages, and other sources. In addition, it helps maintian the purity of the telecom signal by providing a low series resistance high power capability protection device.

The V420LS20APX2855 device provides quick, accurate and reliable protection against ESD, lightning and other transients. It is suitable for applications that require high energy absorption and low capacitance to withstand long-duration high-voltage transients. The low power dissipation of this surge stopper also decreases temperature rise and eliminates the need for heatsinking.

Conclusion

The V420LS20APX2855 transient voltage surge stopper (TVSS) circuit protection device offers a low-loss, low-cost, high-performance solution for telecom equipment. It features dual-side protection with an internal series connection, which provides low capacitance and fast snapback triggered by the 60V (50V in the US) VDR threshold. It is designed to absorb, dissipate and regulate the flow of current through a circuit, while preventing dangerous levels of voltage from damaging the circuit. This device is suitable for applications that require high energy absorption and low capacitance to withstand long-duration high-voltage transients.

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