P4KE91 Circuit Protection

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TVS (Transient Voltage Suppressors) diodes are an effective tool for protecting electronic equipment from dangerous voltage spikes caused by electrostatic discharge (ESD), power surges, lightning and other power disruptions. The P4KE91 series is part of Littelfuse\'s extensive range of ultra-low capacitance ESD protection diodes designed to protect sensitive consumer electronics devices from electrostatic discharge. This series is well-suited for use in high-speed applications such as USB, HDMI, Ethernet, DVI, DisplayPort, Serial ATA, PCI Express and others.

The P4KE91 series includes a variety of devices offering different levels of protection, including a 5KV device that is relatively small and offers high spacing and a 20KV device that has very low capacitance. The 5KV variant is available in both SOD-323 and SOD-523 packages, while the 20KV variant is available in a dual SOD-523 package. All devices from the P4KE91 series feature high peak pulses, very low capacitance and low breakdown voltages, making them ideal for use in high-speed applications.

The P4KE91 series provides ultra-low capacitance and low breakdown voltage with peak pulse power ratings of up to 650W. This makes the device suitable for protection even in high-voltage power supply applications, such as LED lighting systems. The devices are also able to handle up to a rating of 2000W for a single pulse, making them perfect for protecting sensitive components from destructive voltages that can be generated by ESD or a power surge. Additionally, these components feature an impressive range of working voltages and able to dissipate up to 1A of continuous reverse leakage current.

The working principle of the P4KE91 series is simple. When an electrical surge or ESD occurs, the device acts as a clamp and absorbs the excess voltage. This effectively limits the voltage and diverts the current away from the sensitive components, protecting them from damage. The device then blocks the reverse flow of the current, preventing any reverse voltage from causing further damage to the circuit.

The P4KE91 series from Littelfuse offers greater reliability, efficiency and cost savings when compared to more traditional TVS diodes. Not only are these diodes capable of withstanding dangerous voltages, they are also able to dissipate higher levels of current and are available in smaller packages. As a result, the P4KE91 series makes an excellent choice for a wide range of consumer electronics applications, from TVs, phones and computers to gaming consoles, CCTV systems and more.

The P4KE91 series is a convenient and cost-effective tool for providing reliable protection from voltage spikes and ESD. With its small size, high peak pulse power ratings and low capacitance, the P4KE91 series is well-suited for a variety of applications, from consumer to industrial, and can help ensure the safety of sensitive components against damaging voltage spikes.

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