Comparison of MLV and TVS Diode Circuit Protection

This white paper presents a comparison between Multilayer Varistors (MLVs) and Transient Voltage Suppressor (TVS) diodes, focusing on their circuit protection characteristics. It outlines the operating principles of both components, detailing how MLVs function as non-linear resistors that decrease resistance under high voltage transients, while TVS diodes conduct current when voltage exceeds a threshold. The paper lists the advantages of MLVs, including increased surface area for thermal dissipation, higher surge capacity, faster response times, improved reliability, and a wide voltage range. In contrast, it highlights the benefits of TVS diodes, such as faster response times, stable clamping voltage, and longer lifespan. The document also discusses key differences between the two devices, including surge current capability, response time, and cost. It concludes by emphasizing that the choice between MLVs and TVS diodes should be based on specific application requirements, considering factors such as surge energy levels, ESD suppression, and size constraints.