Littelfuse LV UltraMOV Varistor Series - Manual

© 2014 Littelfuse, Inc. 85
Revised: January 16, 2014
Varistor Products
LV UltraMOV TM Series
Radial Leaded Varistors > LV UltraMOV TM Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
LV UltraMO
V ™
S
eries
Description
Features
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency Agency File Number
E320116
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.
LV UltraMOV TM Varistor Series
RoHS
Low Voltage Series Units
Continous:
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 11 to 40 V
DC Voltage Range (V
M(DC)
) 14 to 56 V
Transient:
Non-Repetitive Surge Current, 8/20µs Waveform (I
TM
) 500 to 8,000 A
Non-Repetitive Energy Capability, 2ms Waveform (W
TM
) 0.8 to 140 J
Operating Ambient Temperature Range (T
A
) for Epoxy coated -40 to +85 °C
Operating Ambient Temperature Range (T
A
) for Phenolic coated -40 to +125 °C
Storage Temperature Range (T
STG
) for Epoxy coated -40 to +125 °C
Storage Temperature Range (T
STG
) for Phenolic coated -40 to +150 °C
Temperature Coefficient (αV) of Clamping Voltage (V
C
) at Specified Test Current < 0.01% °C
Hi-Pot Encapsulation (Isolation Voltage Capability) for Epoxy coated 2500 V
Hi-Pot Encapsulation (Isolation Voltage Capability) for Phenolic coated 500 V
Epoxy Coating Insulation Resistance >1,000 MΩ
• Breakthrough in low
voltage varistor design
provides high peak
surge current rating
• Reduced footprint and
volume required for
surge protection
• Optional phenolic coating
• High peak surge
current rating up to
8KA (8/20 μs pulse)
• Wide operating voltage
range V
M(AC)RMS
11V to 40V
and V
M(DC)
14V to 56V
• High operating
temperature range
up to 125ºC
• 5 model sizes available:
5, 7, 10, 14, and 20mm
• Standard lead options
• Lead–free, Halogen-Free
and RoHS compliant
Applications
• LED lighting drivers
• Cordless phones
• Wireless base stations
• Audio devices
• Mobile phone chargers
• Security systems • Fire alarm systems
• Automation Control
Systems (PLCs)
• Industrial Control
Contact Relay
• Surge Protection Devices
Phenolic Coated
Epoxy Coated
The Littelfuse LV UltraMOV™ Series of low voltage, high
surge current, radial leaded varistors provides an ideal circuit
protection solution for lower DC voltage applications by of-
fering higher surge ratings than ever before available in such
small discs.
The maximum peak surge current rating can reach up to 8KA
(8/20 μs pulse) to protect against high peak surges, including
indirect lightning strike interference, system switching tran-
sients and abnormal fast transients from the power source.
Available in five model sizes: 5mm, 7mm, 10mm, 14mm and
20mm, these device feature a wide VAC voltage range of
11V to 40V, and VDC voltage range of 14V to 56V.