Varistor Metal Oxide Varistor Products Page 54 Varistor Metal-Oxide Varistor Products

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series AUML Varistor Series RoHS Description 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 -55C to 125C. 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 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 125C 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 Size Table Metric EIA 3216 1206 3225 1210 4532 1812 5650 2220 Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart. Continuous AUML Series Units Steady State Applied Voltage: DC Voltage Range (V M(DC) ) 18, 24, 48, 68 V Transient: Load Dump Energy, (W LD ) 1.5 to 25 J Jump Start Capability (5 minutes), (V JUMP ) 48 V Operating Ambient Temperature Range (T A ) -55 to +125 O C Storage Temperature Range (T STG ) -55 to +150 O C Temperature Coefficient ( V) of Clamping Voltage (V C ) at Specified Test Current <0.01 %/ O C CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Applications Suppression of inductive switching or other transient events such as EFT and surge voltage at the circuit board level ESD protection for components sensitive to IEC 61000-4-2 (Level 4), MIL-STD- 883C, Method 3015.7, and other industry specifications (See Also the MLE or MLN Series) Provides on-board transient voltage protection for ICs and transistors Used to help achieve electromagnetic compliance of end products Replace larger surface mount TVS Zeners in many applications

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