MLV1812E31703T Circuit Protection

TVS (Transient Voltage Suppressors) are widely used to provide protection against destructive voltage transients in electronic circuits. In addition to TVS, MOVs (Metal Oxide VARistors) and Varistors are also commonly used for this purpose. The MLV1812E31703T is a monolithic varistor that offers excellent performance in transient voltage, surge immunity, and EMI shielding applications.

A varistor is a voltage-dependent resistive device. It acts as a voltage-limiting component that attenuates sharp spikes in voltage. When the voltage across the varistor exceeds its breakdown voltage, it conducts current and provides transient voltage suppression. The MLV1812E31703T features a wide array of different breakdown voltages and additional features that make it suitable for a variety of applications.

The MLV1812E31703T is an thermally enhanced monolithic varistor made from a non-conductive ceramic material. It is capable of suppressing large transient voltages up to +1709V and -814V and has a high energy absorption capacity of 45J. The part has an operational temperature range of -55°C to +125°C, making it suitable for use in extreme environments. Additionally, it is RoHS compliant and is compliant to IEC 61000-4-2 level 4.

The MLV1812E31703T is designed to protect sensitive electronic components from destructive voltage transients in equipment subjected to ESD, EFT, and lightning surges. The device is used frequently in the telecom industry to protect critical components from overvoltage damage. Additionally, it is suitable for many other applications, including medical, automotive, and consumer appliances.

The working principle of the MLV1812E31703T is simple and effective. As the voltage across the varistor exceeds its breakdown voltage (also known as the clamping voltage), current begins to flow through the device. This current is limited by the varistor’s low dynamic impedance, which prevents it from overheating. The varistor then absorbs the energy produced by the transient voltage, protecting the circuit from damage.

The MLV1812E31703T is a reliable and cost-effective protection solution for sensitive circuits. Its wide array of features, such as its high energy absorption capacity and its RoHS compliance, make it perfect for many different applications. With its ability to limit transient voltages, it is one of the best choices for protecting circuits from destructive transients.