V18AUMLA1812

Next Previous Surface Mount Varistors Multilayer Transient Voltage Surge Suppressor AUML Varistor Series 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 -55oC to 125oC. The AUML suppressor is manufactured from semiconducting ceramics which offer rugged protection and excellent transient energy absorption in a small package. The devices are available in ceramic leadless chip form, eliminating lead inductance and assuring fast speed of response to transient surges. These Suppressors require significantly smaller space and land pads than silicon TVS diodes, offering greater circuit board layout flexibility for the designer. Also see the Littelfuse ML, MLN and MLE Series of Multilayer Suppressors. Features • 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 158 w w w. l i t t e l f u s e . c o m Next Previous Surface Mount Varistors Multilayer Transient Voltage Surge Suppressor AUML Varistor Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous: AUML SERIES Steady State Applied Voltage: DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Transient: Load Dump Energy, (WLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 to 25 Jump Start Capability (5 minutes), (VJUMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.5 Operating Ambient Temperature Range (TA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 150 Temperature Coefficient (αv) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .