Varistor Products
Radial Lead Varistors > C-III series
RoHS
C-III Varistor Series
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.
Agency Approvals
Features
Agency
Agency File Number
E75961
42201-006
gh energy
absorption capability
W
TM
40J to 530J (2ms)
85ºC ambient
current capability
I
TM
3500A to
9000A (8/20μs)
The C-III Series is
supplied in 10mm,
14mm and 20mm
disc versions with
various lead options
Absolute Maximum Ratings
Continuous
Steady State Applied Voltage:
)
Transients:
Single-Pulse Peak Current (I
TM
) 8/20μs Wave
(See
Peak Pulse Current Test Waveform)
TM
A
STG
V
C-III Series
130 to 660
Units
V
3500 to 9000
40 to 530
A
J
ºC
ºC
%/ºC
V
MΩ
)
-55 to +85
-55 to +125
<0.0
5000
1000
)
Temperature Coefficient (a ) of Clamping Voltage (V
C
) at Specified Test Current
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.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
101
Revision: June 3, 2009
C-III Varistor Series
C–III Series
116895E
compliant option
available. Please see
the device and ratings
specifications table
for more information
Wide operating
voltage range
V
130V to 680V
reel for automatic
insertion; Also available
with crimped and/or
trimmed lead styles
Varistor Products
Radial Lead Varistors > C-III series
C-III Series Ratings
Lead–free and RoHS Compliant
Models
Part Number
Branding
Standard Models
Maximum Ratings (85 °C)
Transient
Peak Current (8/20μs)
Withstanding
Energy (2ms)W
TM
(
(J)
40
80
200
200
45
90
210
210
50
100
215
215
55
110
220
220
60
125
280
280
65
135
300
300
70
145
320
320
75
155
335
335
80
165
345
345
175
370
185
390
95
190
430
420
440
450
460
490
510
520
) I
TM1
1 Pulse
(A)
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
3500
6000
9000
9000
6000
9000
6000
9000
3500
6000
9000
9000
9000
9000
9000
9000
9000
9000
I
TM2
2 Pulses
(A)
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
3000
5000
7000
7000
5000
7000
5000
7000
3000
5000
7000
7000
7000
7000
7000
7000
7000
7000
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
Continuous
Maximum V
V
M(AC)
(V)
130
130
130
130
140
140
140
140
150
150
150
150
175
175
175
175
230
230
230
230
250
250
250
250
275
275
275
275
300
300
300
300
320
320
320
320
385
385
420
420
460
460
460
480
510
550
575
625
660
680
Part Number
Branding
C-III Varistor Series
102
Revision: June 3, 2009
Varistor Products
Radial Lead Varistors > C-III series
C-III Series Specifications
Lead–free And
RoHS Compliant
Models
Part Number
Specifications (25 °C)
Varistor Voltage at 1mA Maximum Clamping
Model Size
Duty Cycle Surge Rating
DC Test Current
Voltage (8/20μs)
Disc
Diameter (mm)
V Max
V
C
I
p
V Min
3kA (8/20μs) 750A (8/20μs)
# Pulses
# Pulses
(V)
(V)
(V)
(A)
10
184
228
340
25
2
100
14
184
228
340
50
40
600
20
184
228
340
100
80
1600
20
184
220
325
100
80
1600
10
198
242
360
25
2
100
14
198
242
360
50
40
600
20
198
242
360
100
80
1600
20
198
230
340
100
80
1600
10
212
268
395
25
2
100
14
212
268
395
50
40
600
20
212
268
395
100
80
1600
20
212
243
360
100
80
1600
10
247
303
455
25
2
100
14
247
303
455
50
40
600
20
247
303
455
100
80
1600
20
247
285
425
100
80
1600
10
324
396
595
25
2
100
14
324
396
595
50
40
600
20
324
396
595
100
80
1600
20
324
384
570
100
80
1600
10
354
429
650
25
2
100
14
354
429
650
50
40
600
20
354
429
650
100
80
600
20
354
413
620
100
80
1600
10
389
473
710
25
2
100
14
389
473
710
50
40
600
20
389
473
710
100
80
1600
20
389
453
680
100
80
1600
10
420
517
775
25
2
100
14
420
517
775
50
40
600
20
420
517
775
100
80
1600
20
420
490
745
100
80
1600
10
462
565
850
25
2
100
14
462
565
850
50
40
600
20
462
565
850
100
80
1600
20
462
540
810
100
80
1600
14
558
682
1025
50
40
600
20
558
682
1025
100
80
1600
14
610
748
1120
50
40
600
20
610
748
1120
100
80
1600
10
640
790
1190
25
2
100
14
640
790
1190
50
40
600
20
640
790
1190
100
80
1600
20
670
825
1240
100
80
1600
20
735
910
1350
100
80
1600
20
780
970
1435
100
80
1600
20
805
1000
1500
100
80
1600
20
900
1100
1725
100
80
1600
20
940
1210
1820
100
80
1600
20
990
1130
1700
100
80
1600
Standard Models
Part Number
1 Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively.
2 7mm parts also available-contact factory for further information
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
103
Revision: June 3, 2009
C-III Varistor Series
C–III Series
Varistor Products
Radial Lead Varistors > C-III series
Power Dissipation Ratings
Should transients occur in rapid succession, the average
power dissipation is the energy (watt-seconds) per pulse
times the number of pulses per second. The power so
developed must be within the specifications shown on the
device. The operating values of a MOV need to be derated
at high temperatures as shown above. Because varistors
only dissipate a relatively small amount of average power
they are not suitable for repetitive applications that involve
substantial amounts of average power dissipation.
Peak Pulse Current Test Waveform
PERCENT OF PEAK VALUE
100
90
50
10
O
1
T
T
1
T
2
TIME
Current Energy and Power Derating Curve
Figure 2
100
PERCENT OF RATED VALUE
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90 100 110 120
AMBIENT TEMPERATURE (
o
C)
130
140 150
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1
T
2
Example
μs
Current Waveform:
8μs = T
1
20μs = T
2
Figure 1
Transient V-I Characteristics Curves
Maximum Clamping Voltage for 10mm Parts
V130LA5C(P) – V460LA10C(P)
10,000
MODEL SIZE = 10mm
Pulse Rating Curves
Repetitive Surge Capability for 10mm Parts
V130LA5C(P)-V320LA10C(P)
10,000
1
2
10
MODEL SIZE = 10mm
V460LA10C(P)
V320LA10C(P)
Peak Rated Surge Current (A)
1,000
10
2
10
3
10
4
Maximum Voltage (V)
V300LA10C(P)
V275LA10C(P)
V250LA10C(P)
1,000
V230LA10C(P)
100
10
V175LA5C(P)
V150LA5C(P)
V140LA5C(P)
V130LA5C(P)
100
0.001
0.01
0.1
1
1.0
Peak Amperes (A)
100
1000
10000
1
10
100
Surge Impulse Duration (μs)
1,000
10,000
Figure 4
Figure 3
8
C-III Varistor Series
104
Revision: June 3, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
Varistor Products
Radial Lead Varistors > C-III series
Transient V-I Characteristics Curves (continued)
Maximum Clamping Voltage for 14mm Parts
V130LA10C(P) – V420LA20C(P)
10,000
Pulse Rating Curves
Repetitive Surge Capability for 14mm Parts
V130LA10C(P)-V420LA20C(P)
10,000
1
MODEL SIZE = 14mm
2
MODEL SIZE = 14mm
10
10
V460LA20C(P)
V420LA20C(P)
V385LA20C(P)
V230LA20C(P)
10
2
Peak Rated Surge Current (A)
1,000
10
3
10
3
Maximum Voltage (V)
V320LA20C(P)
V300LA20C(P)
1,000
V275LA20C(P)
V250LA20C(P)
10
4
0
1
4
100
V175LA10C(P)
V150LA10C(P)
V140LA10C(P)
V130LA10C(P)
100
10
0.001
0.01
0.1
1
1.0
100
1000
10000
Peak Amperes (A)
Figure
5
Figure 6
10
8
100
Surge Impulse Duration (μs)
1,000
10,000
Maximum Clamping Voltage for 20mm Parts
V130LA5C(P) - V320LA10C (P)
10,000
V680LA100C(P)
V660LA100C(P)
MODEL SIZE = 20mm
V625LA80C(P)
V575LA80C(P)
Maximum Voltage (V)
V510LA80C(P)
V420LA40C(P) V460LA40C(P)
V480LA80C(P)
V385LA40C(P)
1,000
Repetitive Surge Capability for 20mm Parts
V130LA20C(P)-V680LA100C(P)
10,000
1
2
10
10
2
Peak Rated Surge Current (A)
1,000
10
2
MODEL SIZE = 20mm
10
3
10
3
10
4
100
V320LA40C(P)
V230LA40C(P)
V175LA20C(P)
V140LA20C(P)
V130LA20C(P)
100
V150LA20C(P)
10
V300LA40C(P)
V275LA40C(P)
V250LA40C(P)
8
Figure 7
0.001
0.01
0.1
1
1.0
100
1000
10000
10
100
Peak Amperes (A)
Figure 8
1,000
Surge Impulse Duration (μs)
10,000
Maximum Clamping Voltage for Low Clamping Voltage Parts
V130LA20CX325(P) - V300LA40CX245 (P)
10,000
V300LA40CX810(P)
Maximum Voltage (V)
V300LA40CX745(P)
V275LA40CX680(P)
V250LA40CX620(P)
1,000
V230LA40CX570(P)
V175LA20CX425(P)
V150LA20CX360(P)
V140LA20CX340(P)
V130LA20CX325(P)
100
Figure 9
0.001
0.01
0.1
1
1.0
Peak Amperes (A)
100
1000
10000
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
105
Revision: June 3, 2009
C-III Varistor Series
C–III Series
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