Varistors Datasheet
C-III Series
Radial Leaded Varistors
RoHS
Description
The C-III Varistor Series of Metal-Oxide Varistors (MOVs) are
specifically designed for applications requiring high surge energy
absorption ratings and superior multiple pulse absorption rating.
This is achieved through a special dielectric material formulation
which also results in higher repetitive surge ratings than other
MOV types.
The C-III Varistor Series is primarily intended for use in AC line
Surge Protection Device (SPD) product and other similar
applications requiring high transient energy and peak current
capability in a relatively small package size.
Features & Benefits
■ Lead–free, Halogen-Free
and RoHS compliant
■ Available in tape and reel
for automatic insertion; Also
available with crimped and/
or trimmed lead styles
Additional Information
■ High energy absorption
capability WTM 40J
to 530J (2ms)
■ No derating up to
85ºC ambient
■ High pulse life rating
■ The C-III Series is supplied
in 10mm, 14mm and
20mm disc versions with
various lead options
■ High peak pulse
current capability
Resources
Accessories
Samples
■ ITM 3500A to
10,000A (8/20µs)
■ Wide operating voltage
range VM(AC)RMS
130V to 1000V
Agency Approvals
Agency File
Number
Agency
Agency Approval
UL1449
E320116
CECC 42201-006
IEC 61051-1
IEC 61051-2
116895
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
CECC 42201-006
IEC 61051-1
IEC 61051-2
E1273/F
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
C-III Series
Units
Steady State AppliedVoltage
AC Voltage Range (VM(AC)RMS
)
130 to 1000
V
Transients
Single-Pulse Peak Current (ITM) 8/20µs Wave
(See Peak Pulse Current Test Waveform)
3500 to 10,000
A
Single-Pulse Energy Range (WTM)2ms Rectangular Wave
Operating AmbientTemperature Range (TA)
40 to 530
-55 to +85
-55 to +125
<0.01
J
ºC
StorageTemperature Range (TSTG
)
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.
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: GD. 07/16/21