VC120642L800DP Circuit Protection

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TVS (Transient Voltage Suppressors), MOVs (Metal Oxide Varistors) and other non-linear voltage suppressors serve a vital role in protecting circuits from transient voltage events such as induced lightning, electrostatic discharge and switch mode power supply spikes. Varistor devices, such as the VC120642L800DP, are used to clamp high voltage transients and protect critical components from large over-voltage events in systems ranging from consumer electronics to industrial and automotive applications. This article will explain the application field and working principle of the VC120642L800DP.

The VC120642L800DP is a transient voltage suppressor (TVS) varistor that is designed to provide over-voltage protection and increased margin in automotive, medical and other harsh-environment applications. It offers a high-power peak pulse absorption rating of 800W and a maximum standoff voltage of 14V, which provides a wide range of protection for sensitive electronic components in vehicles and other industrial equipment. The VC120642L800DP is also RoHS compliant, making it suitable for use in environmental safety and regulatory compliant applications.

The VC120642L800DP has a reverse breakdown voltage of 2.4V at 8A, making it ideal for applications where a low-voltage, high-current protection is required. The device’s wide operating temperature range of -40°C (40°F) to +85°C (185°F) makes it suitable for use in extreme environmental conditions. In addition, its square shape and small size make it easy to install, ensuring a quick and reliable on-site application.

The working principle of the VC120642L800DP is simple yet effective. It functions by controlling transients, which are voltage and current surges of short duration. The internal elements of the device cause any incoming transients to be blocked and dissipated as heat away from sensitive components. The VC120642L800DP employs a Metal Oxide Varistor (MOV) that is composed of a conductive material encased in a ceramic housing. The material has a non-linear voltage-current characteristic that causes the device to conduct more current under high voltage conditions, thus absorbing the transient surge voltage. The MOV shifts the excess current to the ground, ensuring that it does not damage sensitive components.

The VC120642L800DP is a reliable varistor device that can handle overvoltage transients and protect critical components from potential damage. It is suitable for use in various applications such as automotive, industrial and consumer electronics. It can also be employed in harsh environmental conditions due to its wide operating temperature range and RoHS compliance. The device employs a Metal Oxide Varistor, which is responsible for controlling transient surges and ensuring that any excess current is shifted to the ground. This zener diode design provides reliable protection for sensitive components from high voltage transients. With its small dimensions and efficient design, the VC120642L800DP is ideal for on-site applications in a variety of industrial, consumer and automotive applications.

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