Varistor Products
Radial Lead Varistors > UltraMOVTM Series
UltraMOV™ Varistor Series
Description
The UltraMOV™ Metal Oxide Varistor Series is designed
for applications requiring high peak surge current ratings
and high energy absorption capability. UltraMOV™
varistors are primarily intended for use in AC Line Voltage
applications such asTransient Voltage Surge Suppressors
(TVSS), Uninterruptable Power Supplies (UPS), AC Power
Taps, AC Power Meters, or other products that require
voltage clamping of high transient surge currents from
sources such as lightning, inductive load switching, or
capacitor bank switching.
These devices are produced in radial lead package sizes of
7,10,14 and 20mm and offered in a variety of lead forms.
UltraMOVs™ are manufactured with recognized epoxy
encapsulation and are rated for ambient temperatures up
to 85ºC with no derating. This Series is LASER-branded and
is supplied in bulk, ammo pack (fan-fold), or tape and reel
packaging.
Agency Approvals
Agency
Agency File Number
E320116
116895E
LR91788
42201-006
Features
• Lead–free, Halogen-Free • Characterized for
and RoHS compliant
options available. Please
see the device and ratings
specifications table for
more information
maximum standby
current (Leakage)
• Custom voltage
types available
• Standard lead form and
lead space options
• High peak surge
current rating (I ) up
to 10kA, single T8Mx
20 pulse, (20mm)
• Standard operating
voltage range compatible
with common AC
line voltages (130
VAC to 625 VAC)
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
UltraMOV™ Series
Units
Steady State Applied Voltage:
DC Voltage Range (VM(AC)RMS
)
130 to 625
V
Transients:
Single-Pulse Peak Current (ITM) 8x20μs Wave (See Figure 2)
1,750 to 10,000
12.5 to 400
-55 to +85
-55 to +125
<0.01
A
J
Single-Pulse Energy Range (WTM) 2ms Square Wave
Operating AmbientTemperature Range (TA)
StorageTemperature Range (TSTG
ºC
)
ºC
Temperature Coefficient (aV) of Clamping Voltage (VC) at SpecifiedTest Current
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
COATING Insulation Resistance
%/ºC
V
2500
1000
MΩ
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.
©2010 Littelfuse, Inc.
UltraMOV™Varistor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Revision: June 3, 2010