AUMOV
®
& LV UltraMOV
™
Varistor Design
Guide for DC & Automotive Applications
High Surge
Current Varistors
Design Guide
for
Automotive AUMOV
®
Varistor & LV UltraMOV
™
Varistor Series
Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to changes without notice. Visit littelfuse.com for more information.
© 2015 Littelfuse, Inc.
Table of Contents Page
About the AUMOV
®
Varistor Series 3-4
About the LV UltraMOV
™
Series Varistor 5-6
Varistor Basic 6
Terminology Used in Varistor Specifications 7
Automotive MOV Background and Application Examples 8-10
LV UltraMOV
™
Varistor Application Examples 11- 1 2
How to Select a Low Voltage DC MOV 13-15
Transient Suppression Techniques 16-17
Introduction to Metal Oxide Varistors (MOVs) 18
Series and Parallel Operation of Varistors 19-20
AUMOV
®
Varistor Series Specifications and Part Number Cross-References 21-22
LV UltraMOV
™
Series Specifications and Part Number Cross-References 23-26
Legal Disclaimers 27