P4KE6.8A-TP Circuit Protection

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TVSs (Transient Voltage Suppressors) are a type of protection device designed to protect valuable components from unwanted, high-energy electrical transients such as those produced during a lightning strike. The P4KE6.8A-TP is a type of TVS diode used as a transient voltage protector. Its application field and working principle are described in this paper.

Application Field

The P4KE6.8A-TP is a transient voltage suppressor designed for use in high-reliability applications requiring protection from over-voltage transients. It is commonly used in telecommunications and computer networks, both of which are highly susceptible to damage from transient events. This diode is also used in the industrial and automotive sectors to protect sensitive equipment and components from voltage fluctuations.

The P4KE6.8A-TP is hardy enough to withstand high surge energies, while having a low clamping voltage and reverse-leakage current suitable for the most sensitive applications. It is ideally suited for use in systems requiring multi-point protection or single-point protection, as it is able to dissipate up to 1500W of continuous power. It also features a low ‘on’ resistance of only 0.06 ohms, ensuring a high level of over-voltage protection.

Working Principle and Characteristics

The P4KE6.8A-TP operates on the same general principle as other TVS diodes: when an excessive transient voltage is applied to its terminals, the diode conducts, and the excess current is dissipated in the form of heat. This protects the sensitive circuits in which the diode is installed from potential damage due to the over-voltage.

The characteristics of the P4KE6.8A-TP that enable it to provide effective transient voltage protection are its high-current rating, low on-resistance, and the low clamping voltage. Its high-current rating of 6.8A ensures it can handle surges in excess of 1500W of continuous power. Its low on-resistance of 0.06 ohms, combined with its 3.3V clamping voltage, ensures it can handle over-voltages with minimal risk of damaging the circuits in which it is installed. The P4KE6.8A-TP also has a temperature-dependent reverse bias leakage current, which adds to its protection capabilities.

Conclusion

The P4KE6.8A-TP is a TVS diode designed to provide effective over-voltage protection in a wide variety of applications. It has a high-current rating, low clamping voltage, and low on-resistance, making it suitable for both single-point and multi-point protection. It is also temperature-dependent, ensuring it can handle over-voltages with minimal risk of damaging sensitive circuits.

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