The Littelfuse MLA Automotive Series of transient-voltage surge suppression devices is based on the Littelfuse multilayer fabrication technology. These components are designed to suppress a variety of transient events, including those specified in IEC 61000-4-2 or other standards used for electromagnetic compliance (EMC). Typically the MLA automotive series varistor is applied to protect integrated circuits and other components at the circuit board level.
The AUML Series of Multilayer Transient Surge Suppressors was specifically designed to suppress the destructive transient voltages found in an automobile. The most common transient condition results from large inductive energy discharges. The electronic systems in the automobile, e.g. antilock brake systems, direct ignition systems, engine control, airbag control systems, wiper motor controls, etc., are susceptible to damage from these voltage transients and thus require protection. The AUML transient suppressors have temperature independent suppression characteristics affording protection from -40ºC to 125ºC.