The V5.5MLA0603H is a surface mount Metal-oxide Varistor typically applied to protect integrated circuits and other components at the circuit board level. The transient voltage surge suppression device is based on the Littelfuse multilayer fabrication technology. This component is designed to suppress a variety of transient events. The MLA series is manufactured from semiconducting ceramics. It can operate over a wider temperature range than Zener diodes and has a much smaller footprint than plastic-housed components.