105
Varistor Products
©2009 Littelfuse, Inc.
Revision: November 5, 2009
C-III Varistor Series
Radial Lead Varistors > C-III series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
CIII S
eries
C-III Varistor Series
RoHS
Description
The C-III 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 Series is primarily intended for use in AC
line Transient Voltage Surge Suppressor (TVSS)
product environment and other similar applications
requiring high transient energy and peak current
capability in a relatively small package size.
Features
· Leadfree and RoHS
compliant option
available. Please see
the device and ratings
specifications table
for more information
· High energy
absorption capability
W
TM
40J to 530J (2ms)
· High pulse life rating
· High peak pulse
current capability
I
TM
3500A to
9000A (8/20s)
· Wide operating
voltage range
V
M(AC)RMS
130V to 680V
· Available in tape and
reel for automatic
insertion; Also available
with crimped and/or
trimmed lead styles
· No derating up to
85ºC ambient
· The C-III Series is
supplied in 10mm,
14mm and 20mm
disc versions with
various lead options
Agency Approvals
Absolute Maximum Ratings
· For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency
Agency File Number
E320116
LR91788
116895E
42201-006
Continuous
C-III Series
Units
Steady State Applied Voltage:
DC Voltage Range (V
M(AC)RMS
)
130 to 660
V
Transients:
Single-Pulse Peak Current (I
TM
) 8/20s Wave
(See Peak Pulse Current Test Waveform)
3500 to 9000
A
Single-Pulse Energy Range (W
TM
) 2ms Rectangular Wave
40 to 530
J
Operating Ambient Temperature Range (T
A
)
-55 to +85
ºC
Storage Temperature Range (T
STG
)
-55 to +125
ºC
Temperature Coefficient (a
V
) of Clamping Voltage (V
C
) at Specified Test Current
<0.0
%/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
5000
V
COATING Insulation Resistance
1000
M
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.