82542140

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TVS – Varistors, MOVs

Varistors, also known as transient voltage suppression (TVS) devices, are two-terminal nonlinear integrated circuits designed to protect vulnerable circuits from electrical transients. A type of voltage dependent resistor, they are widely used in consumer electronics, telecommunications, automotive, and aerospace industries. TVS devices, such as the 82542140, are designed to reduce the damaging effects of high voltage transients caused by lightning strikes, electrostatic discharges, power line faults, and more.

At its core, TVS technology utilizes a phenomenon known as ‘ avalanche breakdown’, which occurs when a reverse voltage is applied to a p-n junction diode in the device. As the reverse voltage increases, electrons can jump the bandgap of the diode and flowing away from the junction. This breakdown generates a large surge of current, which reduces the voltage across the p-n junction. This is known as the avalanche current.

The 82542140 application field covers the highest levels of Lightning Impulse Protection, where its breakover voltage characteristics provide additional protection from very high voltage anomalies. It uses high precision mechanical packaging to increase its breakdown performance, and is used in a variety of applications, including telecommunications, automotive and industrial.

The maximum breakover voltage of the 82542140 is 125V, with an operating range from 5 to 40mA. It offers low leakage over a wide temperature range, with a maximum leakage of 0.1mA at 25°C and 0.2mA at 125°C. It also offers a clamping voltage of 18V working under 400A 5/60µs pulse current. Additionally, the 82542140 provides fast response times, with a breakover time of less than 45ns.

These features combined make the 82542140 the ideal device for providing lightning protection for sensitive device input lines. The 82542140 is designed to protect against surges in the 40 to 125V range, such as those caused by lightning strikes, transients, and electrostatic discharges. It prevents surges from reaching your vulnerable circuits, eliminating the possibility of component damaging levels of currents.

The 82542140 is constructed from a zinc oxide powder that has been compressed between two–sheet copper electrodes and sealed in a canister. The device responds within an ultra-fast 45ns and has inherently low contact resistance. Its protection circuit design has the capability to withstand multiple dual lightning, switching, and power line dips, as well as the most common ESD, EFT, and surge pulses. Its multi-voltage technology eliminates the need to select a specific part for a specific voltage application.

In addition to its protection capabilities, the 82542140’s capability to work within a wide temperature range of -40°C to +85°C offers excellent reliability and design flexibility in the harsh industrial and automotive environments. This makes it a great choice for many applications, from automotive to enterprise networking.

The 82542140\'s simplicity of operation and ease of implementation make it an ideal choice for integrated circuit protection. Its rugged design and low resistance offers superior reliability and minimizes power loss. Its ability to maintain its performance over a wide temperature range makes it one of the most reliable solutions available for protecting sensitive circuits from sudden voltage transients.

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