Littelfuse AUML Surface-Mount Multilayer Varistors
Littelfuse AUML Surface-Mount Multilayer Varistors suppress destructive transient voltages, such as large inductive energy discharges, that are found in automobiles. These transient suppressors feature temperature independent suppression characteristics for protection from -55°C to +125°C with no temperature derating up to +125°C ambient. These devices are manufactured from semiconducting ceramics to provide protection and transient energy absorption in small packages with EIA sizes ranging from 1206 to 2220. These suppressors require significantly smaller space and land pads than silicon TVS diodes. This creates greater circuit board layout flexibility for designers. Littelfuse AUML Surface-Mount Multilayer Varistors are available in ceramic leadless chip form, which eliminates lead inductance and assures fast responses to transient surges.
Features
- AEC-Q200 compliant
- Load dump energy rated per SAE Specification J1113
- Leadless, surface-mount chip form
- Zero lead inductance
- Variety of ratings available
- No temperature derating up to +125°C ambient
- High peak surge current capability
- Low-profile, compact industry standard chip size
- Available in EIA sizes 1206, 1210, 1812, and 2220
- Inherent bidirectional clamping
- No plastic or epoxy packaging for better than 94V-0 flammability rating
- RoHS compliant
Applications
- Suppression of inductive switching or other transient events, such as EFT and surge voltage at circuit board level
- Replaces larger surface-mount TVS zeners
- Used to help achieve electromagnetic compliance of end products
- ESD protection for components sensitive to IEC 61000-4-2, MIL-STD 883C, Method 3015.7, and other industry specifications
- Provides onboard transient voltage protection for ICs and transistors
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Littelfuse Varistors
Offers various types of protective devices to suit a variety of application needs.