Metal-OxideVaristors (MOVs)
Radial Lead Varistors > LA Varistor Series
RoHS
LA Varistor Series
Description
The LA Varistor Series of transient voltage surge
suppressors are radial leaded varistors (MOVs)
that are designed to be operated continuously
across AC power lines. These UL recognized
varistors require very little mounting space, and are
offered in various standard lead form options.
The LA Varistor Series are available in four model
sizes: 7mm, 10mm, 14mm and 20mm; and have a
VM(AC)RMS voltage range from 130V to 1000V, and an
energy absorption capability up to 360J. Some LA Series
model numbers are available with clamping voltage
selections, designated by a model number suffix of
either A or B. The 'A' selection is the standard model;
the 'B' selection provides a lower clamping voltage.
See LA Series Device Ratings and Specifications
Table for part number and brand information.
Agency Approvals
Agency File
Number
Agency
Agency Approval
UL1449
E320116
Features
CECC 42201-006
IEC 61051-1
IEC 61051-2
• Lead–free, Halogen-
Free and RoHS
compliant.
•
•
No derating up to
85ºC ambient
116895
IEC 60950-1 (Annex Q) for 14mm and
20mm only
Available in tape and
reel or bulk pack
•
Energy absorption
capability (WTM)
up to 360J
22.2-1
91788
CECC 42201-006
IEC 61051-1
IEC 61051-2
•
Wide operating
voltage range
E1273/F
IEC 60950-1 (Annex Q) for 14mm and
20mm only
VM(AC)RMS 130V to 1000V
Additional Information
Datasheet
Resources
Samples
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
LA Series
Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS
)
130 to 1000
175 to 1200
V
V
DC Voltage Range (VM(DC)
)
Transients:
Peak Pulse Current (ITM
)
For 8/20µs Current Wave (See Figure 2)
1200 to 6500
A
Single Pulse Energy Range
For 10/1000µs Current Wave (WTM
Operating AmbientTemperature Range (TA)
StorageTemperature Range (TSTG
)
11 to 360
-55 to +85
-55 to +125
<0.01
J
OC
OC
)
Temperature Coefficient (aV) of Clamping Voltage (VC) at SpecifiedTest Current
%/OC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
COATING Insulation Resistance
2500
1000
V
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.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18