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AEC-Q200 Compliant Varistor protects automotive electronics.

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March 28, 2014 - With max peak surge current rated up to 5 kA (8/20 sec pulse), radial-leaded varistors of AUMOV™ Series protect sensitive vehicle systems from voltage transients induced by load dump, jump starts, and other events. Phenolic coating option accommodates demands of harsh, under-hood environments with operating temperatures up to 125C. Available in 5, 7, 10, 14, and 20 mm disc sizes, varistors have 16–50 Vdc range and also serve vehicle passenger compartment applications.

New AEC-Q200 Compliant Varistor from Littelfuse Provides 50 Percent Higher Surge Energy Rating for Automotive Electronics

Littelfuse, Inc.
800 E. Northwest Hwy.
Des Plaines, IL, 60016

Press release date: March 19, 2014

Protects sensitive vehicle systems from voltage transients induced by load dump, jump starts

CHICAGO — Littelfuse, Inc., the global leader in circuit protection, has introduced the AUMOV™ Series of low voltage, high surge current, radial-leaded varistors for automotive applications. The AUMOV™ Series Varistor offers 50 percent greater surge withstanding capability than existing technologies on the market for low DC voltage applications. The maximum peak surge current is rated up to 5KA (8/20s pulse) to protect sensitive automotive systems from transients induced by load dump, jump starts, and other transient events. Its compliance with the AEC-Q200 automotive electronics industry standard makes it ideal for use in both the vehicle’s passenger compartment and under-the-hood applications. The AUMOV™ Series offers a wide voltage range of 16VDC to 50VDC and is available in five disc sizes: 5mm, 7mm, 10mm, 14mm, and 20mm. The AUMOV™ Series Varistor provides motor or inductive load transient suppression for automotive safety systems, body electronics, powertrain systems, thermal management/HVAC systems, and infotainment systems.

“The AUMOV™ Series Varistor provides an ideal circuit protection solution for lower DC voltage automotive applications, whether they’re located in the vehicle’s passenger compartment or under the hood,” said Johnny Change, product manager of the AUMOV™ Series Varistor product line. “The phenolic coating option makes them particularly suitable for use in harsh under-hood environments with operating temperatures up to 125C.”

The AUMOV™ Series Varistor offers these key benefits:


High peak surge current rating and energy absorption capability protect sensitive electronics from voltage transients induced by load dump, jump starts, and other large voltage spikes from the inductive generator.

Compliance with AEC-Q200 Table 10, ISO 7637-2, and UL 1449 standards means varistors meet important automotive electronics industry requirements

Production in a TS16949-certified manufacturing facility ensures consistently high quality devices

The AUMOV™ Series Varistor is available in bulk, ammo pack, and tape and reel packaging. Sample requests can be placed through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit

For More Information
Additional information is available on the AUMOV™ Series product page and datasheet. If you have technical questions, please contact: Johnny Chang, Product Manager,

About Littelfuse
Founded in 1927, Littelfuse is the world leader in circuit protection with growing global platforms in power control and sensing. The company serves global customers in the electronics, automotive and industrial markets with technologies including fuses, semiconductors, polymers, ceramics, relays and sensors. Littelfuse has over 7,500 employees in more than 35 locations throughout the Americas, Europe and Asia. For more information, please visit the Littelfuse website:
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