Varistor Products
Radial Lead Varistors > C-III series
C-III Varistor Series
Description
RoHS
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
E320116
LR91788
116895
42201-006
• Lead–free, Halogen-
Free and RoHS
compliant
• High energy
absorption capability
W
TM
40J to 530J (2ms)
• High pulse life rating
• High peak pulse
current capability
I
TM
3500A to
10,000A (8/20μs)
• Wide operating
voltage range
V
M(AC)RMS
130V to 1000V
• 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
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
)
Transients:
Single-Pulse Peak Current (I
TM
) 8/20μs Wave
(See
Peak Pulse Current Test Waveform)
C-III Series
130 to 1000
Units
V
3500 to 10,000
40 to 530
-55 to +85
-55 to +125
<0.01
2500
1000
A
J
ºC
ºC
%/ºC
V
MΩ
Single-Pulse Energy Range (W
TM
) 2ms Rectangular Wave
Operating Ambient Temperature Range (T
A
)
Storage Temperature Range (T
STG
)
Temperature Coefficient (a ) of Clamping Voltage (V
C
) at Specified Test Current
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
COATING Insulation Resistance
V
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.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
113
Revised: June 5, 2013
C-III Varistor Series
C–III Series
Varistor Products
Radial Lead Varistors > C-III series
C-III Series Ratings
Maximum Ratings (85 °C)
Continuous
Transient
Disc
Size
(mm)
Maximum Withstanding
V
RMS
Energy (2ms)
I
TM2
I
TM1
W
TM
(
V
M(AC)
)
1 Pulse 2 Pulses
(V)
(J)
(A)
(A)
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
385
420
420
420
460
460
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
85
175
370
90
185
390
95
190
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
10000
3500
6500
10000
3500
6500
10000
3500
6500
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
3000
5000
7000
3000
5000
7000
3000
5000
Peak Current
(8/20μs)
Specifications (25 °C)
Varistor Voltage
at 1mA DC Test
Current
V
N
Min
(V)
184
184
184
184
198
198
198
198
212
212
212
212
247
247
247
247
324
324
324
324
354
354
354
354
389
389
389
389
420
420
420
420
462
462
462
462
558
558
558
610
610
610
640
640
V
N
Max
(V)
228
228
228
220
242
242
242
230
268
268
268
243
303
303
303
285
396
396
396
384
429
429
429
413
473
473
473
453
517
517
517
490
565
565
565
540
682
682
682
748
748
748
790
790
Maximum
Clamping
Voltage
(8/20μs)
V
C
(V)
340
340
340
325
360
360
360
340
395
395
395
360
455
455
455
425
595
595
595
570
650
650
650
620
710
710
710
680
775
775
775
745
850
850
850
810
1025
1025
1025
1120
1120
1120
1190
1190
Duty Cycle
Surge Rating
Part Number
Branding
3kA
750A
I
p
(8/20μs) (8/20μs)
(A)
#
#
Pulses Pulses
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
100
25
50
100
25
50
100
25
50
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
20
2
10
20
2
10
20
2
10
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
120
20
80
120
20
80
120
20
80
V130LA5CP
V130LA10CP
V130LA20CP
V130LA20CPX325
V140LA5CP
V140LA10CP
V140LA20CP
V140LA20CPX340
V150LA5CP
V150LA10CP
V150LA20CP
V150LA20CPX360
V175LA5CP
V175LA10CP
V175LA20CP
V175LA20CPX425
V230LA10CP
V230LA20CP
V230LA40CP
V230LA40CPX570
V250LA10CP
V250LA20CP
V250LA40CP
V250LA40CPX620
V275LA10CP
V275LA20CP
V275LA40CP
V275LA40CPX680
V300LA10CP
V300LA20CP
V300LA40CP
V300LA40CPX745
V320LA10CP
V320LA20CP
V320LA40CP
V320LA40CPX810
V385LA10CP
V385LA20CP
V385LA40CP
V420LA10CP
V420LA20CP
V420LA40CP
V460LA10CP
V460LA20CP
P130L5C
P130L10C
P130L20C
P130X325
P140L5C
P140L10C
P140L20C
P140X340
P150L5C
P150L10C
P150L20C
P150X360
P175L5C
P175L10C
P175L20C
P175X425
P230L10C
P230L20C
P230L40C
P230X570
P250L10C
P250L20C
P250L40C
P250X620
P275L10C
P275L20C
P275L40C
P275X680
P300L10C
P300L20C
P300L40C
P300X745
P320L10C
P320L20C
P320L40C
P320X810
P385L10C
P385L20C
P385L40C
P420L10C
P420L20C
P420L40C
P460L10C
P460L20C
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
20
10
14
20
10
14
20
10
14
C-III Varistor Series
114
Revised: June 5, 2013
© 2013 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
C-III Series Specifications
(continued from previous page)
Maximum Ratings (85 °C)
Continuous
Transient
Disc
Size
(mm)
Maximum Withstanding
V
RMS
Energy (2ms)
I
TM2
I
TM1
W
TM
(
V
M(AC)
)
1 Pulse 2 Pulses
(V)
(J)
(A)
(A)
460
480
480
480
510
510
510
550
550
550
575
575
575
625
625
625
660
660
660
680
680
680
1000
1000
430
95
195
420
98
205
440
98
210
450
100
230
460
105
235
490
110
240
510
115
240
520
260
530
10000
3500
6500
10000
3500
6500
10000
3500
6500
10000
3500
6500
10000
3500
6500
10000
3500
6500
10000
3500
6500
10000
6500
10000
7000
3000
5000
7000
3000
5000
7000
300
5000
7000
3000
5000
7000
3000
5000
7000
3000
5000
7000
3000
5000
7000
5000
7000
Peak Current
(8/20μs)
Specifications (25 °C)
Varistor Voltage
at 1mA DC Test
Current
V
N
Min
(V)
640
670
670
670
735
735
735
780
780
780
815
815
815
900
900
900
940
940
940
990
990
990
1500
1500
V
N
Max
(V)
790
825
825
825
910
910
910
970
970
970
1000
1000
1000
1100
1100
1100
1210
1210
1210
1240
1210
1130
1800
1800
Maximum
Clamping
Voltage
(8/20μs)
V
C
(V)
1190
1240
1240
1240
1350
1350
1350
1435
1435
1435
1500
1500
1500
1650
1650
1725
1820
1820
1820
1860
1820
1700
2700
2700
Duty Cycle
Surge Rating
Part Number
Branding
3kA
750A
I
p
(8/20μs) (8/20μs)
(A)
#
#
Pulses Pulses
100
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
25
50
100
50
100
20
2
10
20
2
10
20
2
10
20
2
10
20
2
10
20
2
10
20
2
10
20
10
20
120
20
80
120
20
80
120
20
80
120
20
80
120
20
80
120
20
80
120
20
80
120
80
120
V460LA40CP
V480LA10CP
V480LA40CP
V480LA80CP
V510LA10CP
V510LA40CP
V510LA80CP
V550LA10CP
V550LA40CP
V550LA80CP
V575LA10CP
V575LA40CP
V575LA80CP
V625LA10CP
V625LA40CP
V625LA80CP
V660LA10CP
V660LA50CP
V660LA80CP
V680LA10CP
V680LA80CP
V680LA100CP
V1000LA80CP
V1000LA160CP
P460L40C
P480L10C
P480L40C
P480L80C
P510L10C
P510L40C
P510L80C
P550L10C
P550L40C
P550L80C
P575L10C
P575L40C
P575L80C
P625L10C
P625L40C
P625L80C
P660L10C
P660L50C
P660L80C
P680L10C
P680L80C
P680L100C
P1000L8C
P1000L16C
20
10
14
20
10
14
20
10
14
20
10
14
20
10
14
20
10
14
20
10
14
20
14
20
NOTES:
- Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively.
- 7mm parts also available-contact factory for further information
- For additional or intermediary voltage ratings contact factory
Phenolic Coating Option -- C-III Series Varistors for Hi-Temperature Operating Conditions:
•
•
•
•
•
•
•
Phenolic Coated CIII Series devices are available with improved maximum operating maximum temperature 125ºC
These devices also have improved temperature cycling performance capability.
Ratings and Specifications are as per standard CIII Series except Hi–Pot
Encapsulation (Isolation Voltage Capability)=500V.
To order: add X1347 to part number (e.g. V230LA40CPX1347)
These devices are not UL, CSA, VDE or CECC certified.
Contact factory for further details.
Product marking:
Lead-Free,
Halogen-Free
& RoHS Compliant
Indicator
LF 9
P230P40C
YYWW
Phenolic Coated
Option
Identifier
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
115
Revised: June 5, 2013
C-III Varistor Series
C–III Series
Varistor Products
Radial Lead Varistors > C-III series
Current Energy and 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 Ratings and Specifications Table for the specific
Figure 1A - Power Derating for Epoxy Coated
100
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.
Figure 1B - Power Derating for Phenolic Coated
100
PERCENT OF RATED VALUE
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
PERCENT OF RATED VALUE
90
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130
140 150
AMBIENT TEMPERATURE (
o
C)
Peak Pulse Current Test Waveform
PERCENT OF PEAK VALUE
100
90
50
10
O
1
T
T
1
T
2
TIME
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1
= Rise Time = 1.25 x T
T
2
= Decay Time
Example
- For an 8/20
μs
Current Waveform:
8μs = T
1
= Rise Time
20μs = T
2
= Decay Time
Figure 2
Transient V-I Characteristics Curves
Maximum Clamping Voltage for 10mm Parts
V130LA5C(P) – V625LA10C(P)
10000
MODEL SIZE = 10MM
T
A
= -55
o
C TO 85
o
C
130 to 625V
M(AC)
RATING
MAXIMUM CLAMP
VOLTAGE
Pulse Rating Curves
Repetitive Surge Capability for 10mm Parts
V130LA5C(P)-V320LA10C(P)
10,000
1
2
15
1,000
10
2
10
3
100
10
4
10
5
10
6
MAXIMUM PEAKVOLTAGE (V)
625
550
510
460
440
420
385
320
300
275
250
230
1000
RATED PEAK SURGE CURRENT (A)
MODEL SIZE = 10mm
T
A
= -55
o
C TO 85
o
C
∞
10
130 140
150
175
100
0.001
1
0.01
0.1
1
10
PEAK CURRENT (A)
100
1000
10000
10
100
1,000
10,000
Figure 3
C-III Varistor Series
Figure 4
116
Revised: June 5, 2013
SURGE IMPULSE DURATION (μs)
© 2013 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 (continued)
Repetitive Surge Capability for 14mm Parts
V130LA10C(P)-V420LA20C(P)
10,000
1
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
MODEL SIZE = 14mm
15
2
RATED PEAK SURGE CURRENT (A)
V460LA20C(P)
V420LA20C(P)
V385LA20C(P)
Maximum Voltage (V)
V230LA20C(P)
1,000
10
2
10
3
10
4
V320LA20C(P)
V300LA20C(P)
1,000
V275LA20C(P)
V250LA20C(P)
100
∞
10
V175LA10C(P)
V150LA10C(P)
V140LA10C(P)
V130LA10C(P)
100
0.001
0.01
0.1
1
10
100
1000
10000
1
10
100
1,000
10,000
Figure 5
Peak Amperes (A)
Figure 6
SURGE IMPULSE DURATION (μs)
Maximum Clamping Voltage for 20mm Parts
V130LA5C(P) - V680LA10C (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
15
10
2
1,000
10
3
10
4
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
2
RATED PEAK SURGE CURRENT (A)
100
∞
V320LA40C(P)
V230LA40C(P)
V175LA20C(P)
V150LA20C(P)
V140LA20C(P)
V130LA20C(P)
100
V300LA40C(P)
V275LA40C(P)
V250LA40C(P)
10
1
1
10
100
1000
10000
10
100
1,000
10,000
Figure 7
0.001
0.01
0.1
Peak Amperes (A)
Figure 8
SURGE IMPULSE DURATION (μs)
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
10
Peak Amperes (A)
100
1000
10000
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
117
Revised: June 5, 2013
C-III Varistor Series
C–III Series
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