Littelfuse Littelfuse MLA Automotive Varistors

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.  

Features

AUML Automotive Series:
  • AEC - Q200 compliant 
  • RoHS Compliant 
  • Load Dump energy rated per SAE Specification J1113 
  • Leadless, surface mount chip form 
  • “Zero” Lead Inductance 
  • Variety of energy ratings available 
  • No temperature derating up to 125ºC ambient 
  • High peak surge current capability 
  • Low Profile, compact industry standard chip size; (1206, 1210, 1812 and 2220 Sizes) 
  • Inherent bidirectional clamping 
  • No Plastic or epoxy packaging assures better than 94V-0 flammability rating

MLA Automotive Series:

  • AEC-Q200 qualified 
  • Halogen-Free and RoHS compliant 
  • Leadless 0603, 0805, 1206 and 1210 chip sizes 
  • Multilayer ceramic construction technology 
  • -40°C to +125°C operating temp. range 
  • Operating voltage range VM(DC) = 3.5V to 120V 
  • Rated for surge current (8 x 20µs) 
  • Rated for energy (10 x 1000µs) 
  • Inherent bi-directional clamping 
  • No plastic or epoxy packaging assures better than UL94V-0 flammability rating 
  • Standard low capacitance types available 
  • Load Dump energy rated per SAE Specification J1113

Applications

• Air flow sensor manufacturers
• Battery control unit manufacturers
• DC/DC converter and inverter manufacturers
• Engine control unit (ECU) manufacturers
• Temperature measurement manufacturers
• Throttle control valve manufacturers
• Wiper module manufacturers
• Airbag control unit manufacturers
• Braking-system control unit (ABS/ESP) manufacturers
• Sun roof manufacturers
• Dashboard systems manufacturers