© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
C-III Varistor Series
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
• Lead–free, Halogen-
Free and RoHS
compliant
• High energy
absorption capability
WTM 40J to 530J (2ms)
• High pulse life rating
• High peak pulse
current capability
ITM 3500A to
10,000A (8/20µs)
• Wide operating
voltage range
VM(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 Seriesis
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
Continuous C-III Series Units
Steady State Applied Voltage:
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 40 to 530 J
Operating Ambient Temperature Range (TA) -55 to +85 ºC
Storage Temperature Range (TSTG) -55 to +125 ºC
Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current <0.01 %/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 2500 V
COATING Insulation Resistance 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.
RoHS
Agency Agency Approval Agency File
Number
UL1449 E320116
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
116895
C22.2 No. 8 91788
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q) for 14mm
and 20mm only
E1273/F
Additional Information
Datasheet Samples
Resources
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
C-III Series Ratings
Part Number Branding Disc
Size
(mm)
Maximum Ratings (85 °C) Specifications (25 °C)
Continuous Transient Varistor Voltage
at 1mA DC Test
Current
Maximum
Clamping
Voltage
(8/20µs)
Duty Cycle
Surge Rating
Maximum
VRMS
VM(AC)
(V)
Withstanding
Energy (2ms)
WTM ( )
(J)
Peak Current
(8/20µs)
ITM1
1 Pulse
(A)
ITM2
2 Pulses
(A)
VN
Min
(V)
VN
Max
(V)
VC
(V) Ip
(A)
3kA
(8/20µs)
#
Pulses
750A
(8/20µs)
#
Pulses
V130LA5CP P130L5C 10 130 40 3500 3000 184.5 225.5 340 25 2 20
V130LA10CP P130L10C 14 130 80 6500 5000 184.5 225.5 340 50 10 80
V130LA20CP P130L20C 20 130 200 10000 7000 184.5 225.5 340 100 20 120
V130LA20CPX325 P130X325 20 130 200 10000 7000 190 220 325 100 20 120
V140LA5CP P140L5C 10 140 45 3500 3000 198 242 360 25 2 20
V140LA10CP P140L10C 14 140 90 6500 5000 198 242 360 50 10 80
V140LA20CP P140L20C 20 140 210 10000 7000 198 242 360 100 20 120
V140LA20CPX340 P140X340 20 140 210 10000 7000 198 230 340 100 20 120
V150LA5CP P150L5C 10 150 50 3500 3000 216.0 264.0 395 25 2 20
V150LA10CP P150L10C 14 150 100 6500 5000 216.0 264.0 395 50 10 80
V150LA20CP P150L20C 20 150 215 10000 7000 216.0 264.0 395 100 20 120
V150LA20CPX360 P150X360 20 150 215 10000 7000 216 243 360 100 20 120
V175LA5CP P175L5C 10 175 55 3500 3000 243 297 455 25 2 20
V175LA10CP P175L10C 14 175 110 6500 5000 243 297 455 50 10 80
V175LA20CP P175L20C 20 175 220 10000 7000 243 297 455 100 20 120
V175LA20CPX425 P175X425 20 175 220 10000 7000 247 285 425 100 20 120
V230LA10CP P230L10C 10 230 60 3500 3000 324 396 595 25 2 20
V230LA20CP P230L20C 14 230 125 6500 5000 324 396 595 50 10 80
V230LA40CP P230L40C 20 230 280 10000 7000 324 396 595 100 20 120
V230LA40CPX570 P230X570 20 230 280 10000 7000 324 384 570 100 20 120
V250LA10CP P250L10C 10 250 65 3500 3000 351 429 650 25 2 20
V250LA20CP P250L20C 14 250 135 6500 5000 351 429 650 50 10 80
V250LA40CP P250L40C 20 250 300 10000 7000 351 429 650 100 20 120
V250LA40CPX620 P250X620 20 250 300 10000 7000 354 413 620 100 20 120
V275LA10CP P275L10C 10 275 70 3500 3000 387 473 710 25 2 20
V275LA20CP P275L20C 14 275 145 6500 5000 387 473 710 50 10 80
V275LA40CP P275L40C 20 275 320 10000 7000 387 473 710 100 20 120
V275LA40CPX680 P275X680 20 275 320 10000 7000 389 453 680 100 20 120
V300LA10CP P300L10C 10 300 75 3500 3000 423.0 517.0 775 25 2 20
V300LA20CP P300L20C 14 300 155 6500 5000 423.0 517.0 775 50 10 80
V300LA40CP P300L40C 20 300 335 10000 7000 423.0 517.0 775 100 20 120
V300LA40CPX745 P300X745 20 300 335 10000 7000 420 490 74 5 100 20 120
V320LA10CP P320L10C 10 320 80 3500 3000 462.0 558.0 850 25 2 20
V320LA20CP P320L20C 14 320 165 6500 5000 462.0 558.0 850 50 10 80
V320LA40CP P320L40C 20 320 345 10000 7000 462.0 558.0 850 100 20 120
V320LA40CPX810 P320X810 20 320 345 10000 7000 462 540 810 100 20 120
V385LA10CP P385L10C 10 385 85 3500 3000 558 682 1025 25 2 20
V385LA20CP P385L20C 14 385 175 6500 5000 558 682 1025 50 10 80
V385LA40CP P385L40C 20 385 370 10000 7000 558 682 1025 100 20 120
V420LA10CP P420L10C 10 420 90 3500 3000 612.0 748.0 1120 25 2 20
V420LA20CP P420L20C 14 420 185 6500 5000 612.0 748.0 1120 50 10 80
V420LA40CP P420L40C 20 420 390 10000 7000 612.0 748.0 1120 100 20 120
V460LA10CP P460L10C 10 460 95 3500 3000 643.5 786.5 1190 25 2 20
V460LA20CP P460L20C 14 460 190 6500 5000 643.5 786.5 1190 50 10 80
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
C-III Series Specifications (continued from previous page)
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
Part Number Branding Disc
Size
(mm)
Maximum Ratings (85 °C) Specifications (25 °C)
Continuous Transient Varistor Voltage
at 1mA DC Test
Current
Maximum
Clamping
Voltage
(8/20µs)
Duty Cycle
Surge Rating
Maximum
VRMS
VM(AC)
(V)
Withstanding
Energy (2ms)
WTM ( )
(J)
Peak Current
(8/20µs)
ITM1
1 Pulse
(A)
ITM2
2 Pulses
(A)
VN
Min
(V)
VN
Max
(V)
VC
(V) Ip
(A)
3kA
(8/20µs)
#
Pulses
750A
(8/20µs)
#
Pulses
V460LA40CP P460L40C 20 460 430 10000 7000 643.5 786.5 1190 100 20 120
V480LA10CP P480L10C 10 480 95 3500 3000 675.0 825.0 1240 25 2 20
V480LA40CP P480L40C 14 480 195 6500 5000 675.0 825.0 1240 50 10 80
V480LA80CP P480L80C 20 480 420 10000 7000 675.0 825.0 1240 100 20 120
V510LA10CP P510L10C 10 510 98 3500 3000 738.0 902.0 1350 25 2 20
V510LA40CP P510L40C 14 510 205 6500 5000 738.0 902.0 1350 50 10 80
V510LA80CP P510L80C 20 510 440 10000 7000 738.0 902.0 1350 100 20 120
V550LA10CP P550L10C 10 550 98 3500 3000 792.0 968.0 1435 25 2 20
V550LA40CP P550L40C 14 550 210 6500 5000 792.0 968.0 1435 50 10 80
V550LA80CP P550L80C 20 550 450 10000 7000 792.0 968.0 1435 100 20 120
V575LA10CP P575L10C 10 575 100 3500 3000 819.0 1001.0 1500 25 2 20
V575LA40CP P575L40C 14 575 230 6500 5000 819.0 1001.0 1500 50 10 80
V575LA80CP P575L80C 20 575 460 10000 7000 819.0 1001.0 1500 100 20 120
V625LA10CP P625L10C 10 625 105 3500 3000 900 1100 1650 25 2 20
V625LA40CP P625L40C 14 625 235 6500 5000 900 1100 1650 50 10 80
V625LA80CP P625L80C 20 625 490 10000 7000 900 1100 1725 100 20 120
V660LA10CP P660L10C 10 660 110 3500 3000 972.0 1188.0 1820 25 2 20
V660LA50CP P660L50C 14 660 240 6500 5000 972.0 1188.0 1820 50 10 80
V660LA80CP P660L80C 20 660 510 10000 7000 972.0 1188.0 1820 100 20 120
V680LA10CP P680L10C 10 680 115 3500 3000 990.0 1210.0 1860 25 2 20
V680LA80CP P680L80C 14 680 240 6500 5000 990 1210 1820 50 10 80
V680LA100CP P680L100C 20 680 520 10000 7000 990 1130 1700 100 20 120
V1000LA80CP P1000L8C 14 1000 260 6500 5000 1500 1800 2700 50 10 80
V1000LA160CP P1000L16C 20 1000 530 10000 7000 1500 1800 2700 100 20 120
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 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:
LF 9
P230P40C
YYWW Phenolic Coated
Option
Identifier
Lead-Free,
Halogen-Free
& RoHS Compliant
Indicator
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
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
Current Energy and Power Dissipation Ratings
Peak Pulse Current Test Waveform
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O
1
T
T
1
T
2
TIME
PERCENT OF PEAK VALUE
O
1
= Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T
1
= Virtual Front time = 1.25 • t
T
2
= Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8s = T
1
= Virtual Front Time
20 s = T
2
= Virtual Time to Half Value
01 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example - For an 8/20 µs Current Waveform:
8µs = T1 = Rise Time
20µs = T2 = Decay Time
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE (
o
C)
PERCENT OF RATED VALUE
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
Figure 1A - Power Derating for Epoxy Coated
Figure 2
V320LA10C(P)
V300LA10C(P)
V275LA10C(P)
V250LA10C(P)
V175LA5C(P)
V150LA5C(P)
V140LA5C(P)
V130LA5C(P)
V230LA10C(P)
MODEL SIZE = 10mm
10,000
1,000
100
0.001 0.010.1 110100 1000 10000
Maximum Voltage (V)
Peak Amperes (A)
V460LA10C(P)
10000
1000
100
0.001 0.01 0.1 110100 1000 10000
PEAK CURRENT (A)
MAXIMUM PEAK VO LTAGE (V)
10000
1000
100
0.001 0.01 0.1 110100 1000 10000
PEAK CURRENT (A)
MAXIMUM PEAK VO LTAGE (V)
MODEL SIZE = 10MM
T
A
= -55
o
C TO 85
o
C
130 to 625V
M(AC )
RATING
MAXIMUM CLAMP
VOLTAGE
625 460 440 385
230
250
275
300
320
175
150
140
130
420
550 510
Maximum Clamping Voltage for 10mm Parts
V130LA5C(P) – V625LA10C(P)
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
15 12
10
2
10
3
10
4
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
12
10
3
10
4
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
15
10
2
10
4
10
5
10
6
∞
10
3
10
2
2
1
15
10 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
10,000
1,000
100
10
1
RATED PEAK SURGE CURRENT (A)
MODEL SIZE = 10mm
T
A
= -55
o
C TO 85
o
C
∞
∞
Repetitive Surge Capability for 10mm Parts
V130LA5C(P)-V320LA10C(P)
Figure 3 Figure 4
Transient V-I Characteristics Curves Pulse Rating Curves
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE (
o
C)
PERCENT OF RATED VALUE
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
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
15 12
10
2
10
3
10
4
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
12
10
3
10
4
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
15
10
2
10
4
10
5
10
6
∞
10
3
10
2
2
1
15
10 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
10,000
1,000
100
10
1
RATED PEAK SURGE CURRENT (A)
MODEL SIZE = 10mm
T
A
= -55
o
C TO 85
o
C
∞
∞
Maximum Clamping Voltage for 14mm Parts
V130LA10C(P) – V420LA20C(P)
10,000
1,000
100
0.001 0.010.1 110 1001000 10000
V420LA20C(P)
V385LA20C(P)
V250LA20C(P)
MODEL SIZE = 14mm
Maximum Voltage (V)
Peak Amperes (A)
V320LA20C(P)
V300LA20C(P)
V230LA20C(P)
V175LA10C(P)
V150LA10C(P)
V140LA10C(P)
V130LA10C(P)
V275LA20C(P)
V460LA20C(P)
Transient V-I Characteristics Curves
V1 30LA20C
V1 40LA20C
V1 50LA20C
V1 75LA20C
V2 30LA40C
V2 50LA40C
V2 75LA40C
V3 00LA40C
V3 20LA40C
V3 85LA40C
V4 20LA40C
V4 80LA80C
V5 10LA80C
V5 75LA80C
V6 25LA80C
V6 60LA100C
MODEL SIZE = 20mm
10,000
1,000
100
0.001 0.010.1 110 1001000 10000
V575LA80C(P)
V660LA100C(P)
V625LA80C(P)
V510LA80C(P)
V460LA40C(P)
V480LA80C(P)
V420LA40C(P)
V385LA40C(P)
V175LA20C(P)
V150LA20C(P)
V140LA20C(P)
V130LA20C(P)
V230LA40C(P)
V250LA40C(P)
V275LA40C(P)
V300LA40C
(P)
V320LA40C(P)
V680LA100C(P)
Maximum Voltage (V)
Peak Amperes (A)
Maximum Clamping Voltage for 20mm Parts
Maximum Clamping Voltage for Low Clamping Voltage Parts
V130LA5C(P) - V680LA10C (P)
V130LA20CX325(P) - V300LA40CX245 (P)
10,000
1,000
100
0.001 0.010.1 110 1001000 10000
V300LA40CX745(P)
V275LA40CX680(P)
V250LA40CX620(P)
V230LA40CX570(P)
V175LA20CX425(P)
V150LA20CX360(P)
V140LA20CX340(P)
V130LA20CX325(P)
V300LA40CX810(P)
Maximum Voltage (V)
Peak Amperes (A)
Repetitive Surge Capability for 20mm Parts
V130LA20C(P)-V680LA100C(P)
Repetitive Surge Capability for 14mm Parts
V130LA10C(P)-V420LA20C(P)
Pulse Rating Curves
Figure 5 Figure 6
Figure 7 Figure 8
Figure 9
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
15 12
10
2
10
3
10
4
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
10,000
1,000
100
10
110 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
12
10
3
10
4
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
15
10
2
10
4
10
5
10
6
∞
10
3
10
2
2
1
15
10 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
10,000
1,000
100
10
1
RATED PEAK SURGE CURRENT (A)
MODEL SIZE = 10mm
T
A
= -55
o
C TO 85
o
C
∞
∞
Note: Repetitive surge capability is qualified and tested based on 8/20us
current waveform (not combination waveform) and UL1449 40.7.3 (Edition 4)
test condition.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
Operating/Storage
Temperature -55°C to +85°C/-55°C to +125°C
Humidity Aging +85°C, 85% RH, 1000 hours
+/-10% typical voltage change
Thermal Shock +85°C to -40°C, 5 times
+/-10% typical voltage change
Solvent Resistance MIL–STD–202, Method 215
Moisture Sensitivity Level 1, J-STD-020
Lead Material Copper Clad Steel Wire
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208
Insulating Material Cured, flame retardant epoxy polymer
meets UL94V–0 requirements
Device Labeling Marked with LF, voltage, UL/CSA Logos,
and date code
Physical Specifications Environmental Specifications
Wave Solder Profile
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5 4
TIME(MINUTE
S)
TEMPERATURE (ºC)
Maximum Wave 240C
Lead–free Profile
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5
4
TIME(MINUTES)
TEMPERATURE (ºC)
Maximum Wave 260C
Non Lead–free Profile
Figure 10 Figure 11
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
FIGURE 9. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
FIGURE 10.TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
500
450
400
350
300
0102030405060708090100 110 120
NUMBER OF SURGES
CLAMPING VOLTAGE AT 3kA
600
550
500
450
400
350
300 0200400 600800 1000 1200 1400 16002000
NUMBER OF SURGES
CLAMPING VOLTAGE AT 750A
V130LA20C
3kA (8/20μs)
(RATED FOR 20 PULSES)
V175LA20C
750A (8/20μs)
(RATED FOR 120 PULSES)
FIGURE 9. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
FIGURE 10.TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
500
450
400
350
300
NUMBER OF SURGES
CLAMPING VOLTAGE AT 3kA
V130LA20C
3kA (8/20μs)
(RATED FOR 20 PULSES)
010515253020
NUMBER OF SURGES
(RATED FOR 120 PULSES)
010050 150 250 300200
600
550
500
450
400
350
300
CLAMPING VOLTAGE AT 750A
V175LA20C
750A (8/20μs)
AC Bias Reliability
The C-III Series MOVs were designed for use on the AC
line. The varistor is connected across the AC line and is
biased with a constant amplitude sinusoidal voltage. It
should be noted that the definition of failure is a shift in the
nominal varistor voltage (VN) exceeding +/-10%. Although
this type of varistor is still functioning normally after this
magnitude of shift, devices at the lower extremities of VN
tolerance will begin to dissipate more power.
Because of this possibility, an extensive series of
statistically designed tests were performed to determine
the reliability of the C-III type of varistor under AC bias
combined with high levels of temperature stress. To
date, this test has generated over 50,000 device hours of
operation at a temperature of 125ºC, although only rated at
85ºC. Changes in the nominal varistor voltage, measured at
1mA, of less than 2% have been recorded, as displayed in
the diagram at right.
Transient Surge Current/Energy Transient Capability
The transient surge rating serves as an excellent figure
of merit for the C-III varistor. This inherent surge handling
capability is one of the C-III varistor’s best features.
The enhanced surge absorption capability results from
improved process uniformity and enhanced construction.
The homogeneity of the raw material powder and
improved control over the sintering and assembly
processes are contributing factors to this improvement.
In the low power AC mains environment, industry
standards (UL, IEC, NEMA and IEEE) all suggest that the
worst case surge occurrence will be 3kA. Such a transient
event may occur up to five times over the equipment life
time (approximately 10 years). While the occurences of
five 3kA transients is the required capability, the rated,
repetitive surge current for the C-III Series is 20 pulses
for the 20mm units and 10 pulses for the 14mm Series.
As a measure of the inherent device capability, samples
of the 20mm V130LA20C devices were subjected to
a worst case repetitive transient surges test. After 20
pulses, each of 3kA, there was negligible change in
the device characteristics. Changes in the clamping
voltage, measured at 100A, of less than 3% were
recorded, as shown in the upper diagram at right.
Samples of the 20mm Series V175LA20C were subjected
to repetitive surge occurrences of 750A. Again, there was
negligible changes in any of the device characteristics
after 120 pulses, as shown in the lower diagram at right.
In both cases the inherent device capability is far
in excess of the expected worst case scenario.
FIGURE 8. HIGH TEMPERATURE OPERATING LIFE 125 oC
FOR 1000 HOURS AT RATED BIAS
300
250
200
150
100
0 100 200 300 400 500 600 700 800 900 1000
1100
TIME (HOURS)
V
NOM
AT 1mA (V)
V130LA20C
FIGURE 9. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
FIGURE 10.TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
500
450
400
350
300
0102030405060708090100 110 120
NUMBER OF SURGES
CLAMPING VOLTAGE AT 3kA
600
550
500
450
400
350
300 0200400 600800 1000 1200 1400 16002000
NUMBER OF SURGES
CLAMPING VOLTAGE AT 750A
V130LA20C
3kA (8/20μs)
(RATED FOR 20 PULSES)
V175LA20C
750A (8/20μs)
(RATED FOR 120 PULSES)
FIGURE 9. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
FIGURE 10.TYPICAL REPETITIVE SURGE CURRENT
CAPABILITY OF C-III SERIES MOVs
500
450
400
350
300
NUMBER OF SURGES
CLAMPING VOLTAGE AT 3kA
V130LA20C
3kA (8/20μs)
(RATED FOR 20 PULSES)
01051
5253
020
NUMBER OF SURGES
(RATED FOR 120 PULSES)
010050 150 250 300200
600
550
500
450
400
350
300
CLAMPING VOLTAGE AT 750A
V175LA20C
750A (8/20μs)
High Temperature Operating Life 125ºC for 1000 Hours
at Rated Bias
Typical Repetitive Surge Current Capability of
C-III Series MOVs
Figure 12
Figure 13
Figure 14
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
Product Dimensions (mm)
Øb
H1
e
'
25.4
(1.00) Min.
E
$
CRIMPED AND TRIMMED LEAD
*SEATING
PLANE
L
TRIM
ATRIM
Dimension VRMS Voltage
Model
10mm Size 14mm Size 20mm Size
Min. Max. Min. Max. Min. Max.
AAll 12.0 (0.472) 16.0 (0.630) 13.5 (0.531) 20.0 (0.787) 17.5 (0.689) 28.0 (1.102)
ØD All 10.0 (0.394) 12.5 (0.492) 13.5 (0.531) 17.0 (0.669) 17.5 (0.689) 23.0 (0.906)
eAll 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335)
e1
130 - 320 1.5 (0.059) 5.5 (0.216) 1.5 (0.059) 4.5 (0.177) 1.5 (0.059) 4.5 (0.177)
385 - 680 2.5 (0.098) 7.5 (0.295) 2.5 (0.098) 7.5 (0.295) 2.5 (0.098) 7.5 (0.295)
> 680 4.5 (0.177) 9.5 (0.374) 4.5 (0.177) 9.5 (0.374) 4.5 (0.177) 9.5 (0.374)
E
130 - 320
-
7.3 (0.287)
-
7.3 (0.287)
-
7.3 (0.287)
385 - 680 11.0 (0.433) 11.0 (0.433) 11.0 (0.433)
> 680 14.0 (0.551) 14.0 (0.551) 14.0 (0.551)
Øb 130 - 625 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034)
>625 0.95 (0.037) 1.05 (0.041)
ATRIM All – 19.5 (0.768) – 23.5 (0.925) – 30.0 (1.18)
LTRIM All 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185)
Dimensions are in millimeters (inches)
1. 10mm lead spacing also available. See additional lead style options.
2. 7mm and 12mm devices also available upon request. Contact factory for details.
CRIMPED AND TRIMMED LEADS
Radial lead types can be supplied with combination preformed
crimp and trimmed leads. This option is supplied to the
dimensions shown below.
*Seating plane interpretation per IEC-60717
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
Symbol Description Model Size
10mm 14mm 20mm
P Pitch of Component 25.4 -/+1.0
P0 Feed Hole Pitch 12.7 -/+ 0.2
P1 Feed Hole Center to Pitch 8.85 -/+ 0.8
P2 Hole Center to Component
Center 12.7 -/+ 0.7
F Lead to Lead Distance 7.50 -/+ 0.8
h Component Alignment 2.00 Max
W Tape Width 18.25 -/+ 0.75
W0 Hold Down Tape Width 12.0 -/+ 0.3
W1 Hole Position 9.125 -/+ 0.625
W2 Hold Down Tape Position 0.5 Max
H Height From Tape Center To
Component Base 19.0 -/+1.0
H0 Seating Plane Height 16.0 -/+ 0.5
H1 Component Height 36 Max 40 Max 46.5
Max
D0 Feed Hole Diameter 4.0 -/+ 0.2
t Total Tape Thickness 0.7 -/+ 0.2
p Component Alignment 3° Max
U Under crimp Width 8.0 Max
Tape and Reel Specifications
Crimped Leads "LT"
Straight Leads "LS"
Under-crimped Leads "LU"
W0
P0
P1
DH
E
DH
DP
W1
W
Ft
W2
P
DP
b
H
D0
H1
P2
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
b
H0
D0
H
1SEATING
PLANE
P1
P0
P2
W0
P1
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
P2
DP
b
Ho
D0
H1
• (available for voltage ratings up to 550V only)
Crimped Leads "LT"
Straight Leads "LS"
Under-crimped Leads "LU"
W0
P0
P1
DH
E
DH
DP
W1
W
Ft
W2
P
DP
b
H
D0
H
1
P2
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
b
H0
D0
H1SEATING
PLANE
P1
P0
P2
W0
P1
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
P2
DP
b
Ho
D0
H1
Crimped Leads "LT"
Straight Leads "LS"
Under-crimped Leads "LU"
W0
P0
P1
DH
E
DH
DP
W1
W
Ft
W2
P
DP
b
H
D0
H1
P2
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
b
H0
D0
H1SEATING
PLANE
P1
P0
P2
W0
P1
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
P2
DP
b
Ho
D0
H
1
CRIMPED LEADS "LT"
STRAIGHT LEADS "LS"
UNDER-CRIMPED LEADS "LU"
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/31/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > C-III Varistor Series
Part Numbering System
XX
For “VARISTOR”
V
M(AC)
(Thr
ee or four digits -- 130V to 1,000V)
V XXXX LA C
RELATIVE ENERGY INDICATOR
(One or Two Digits)
C-III SERIES DESIGNATOR
LEAD-FREE, HALOGEN-FREE AND
RoHS COMPLIANT INDICATOR
P
See OPTIONS CODES notes below
XXXXX
OPTION CODES
(See notes below)
BASE PART CODES
(See Ratings & Specifications tables and notes below)
SERIES +
PACKAGING / LEAD STYLE
DESIGNA
TOR
(See BASE
PART CODES notes below)
LA = Bulk Pack / Straight Leads (standard)
LC = Bulk Pack / Crimped and Trimmed Leads
LS = Ta pe and Reel / Straight Leads
LT = Ta pe and Reel / Crimped Leads
LU = Ta pe and Reel / Under-Crimped Leads
Ordering Notes:
Device Size Voltage Quantity Per Reel
"T" Reel "S" Reel "U"Reel
10mm ALL 500 500 500
14mm ≤ 275V 500 500 500
≥ 275V 400 400 400
20mm ≤ 275V 500 500 500
≥ 275V 400 400 400
Series + Packaging / Lead Style Designators:
Ordering examples:
Straight
Lead
Bulk Pack
(standard)
Straight
Lead
Tape & Reel
Crimped &
Trimmed
Lead
Bulk Pack
Under-Crimp
Lead
Tape & Reel
V130LA20CP V130LS20CP V130LC20CP V130LU20CP Standard Model Order As
V130LA20CP V130LA20CPX10
Littelfuse C-III Series varistors are shipped standard in bulk pack
with straight leads and lead spacing outlined in the Package
Dimensions section of this data sheet.
Tape & Reel Quantities:
Crimped leads are standard on LA Series varistors supplied in
tape and reel, denoted with "LT."
"LC" style is supplied in bulk only.
"LU" style is supplied in tape & reel only.
For crimped leads without trimming and any varitions other than
that described above, please contact Littelfuse.
For standard parts, use the BASE PART designator only.
For parts with non-standard options (such as additional form, packaging
and lead space options), use BASE PART + OPTION CODE.
OPTION CODE items are subject to availability and minimum order
requirements. Please contact a Littelfuse products representative for
additional information or questions
BASE PART CODES: OPTION CODES:
Standard Model Order As
V130LA20CP V130LA20CPX2855
Packaging and Quantities:
X10: 10MM LEAD SPACING OPTION --
For 10 (-/+1)mm lead spacing (available on 20mm
diameter models only), append standard model
BASE PART number with "X10." Example:
X2855: Nickel Barrier COATED WIRE OPTION --
All standard parts use tinned copper clad steel wire.
Nickel Barrier Coated wire is available as an option,
consisting of Copper wire with a flashing of Nickel
followed by a top coating of Tin. To order append standard
model BASE PART number with "X2855." Example:
X1347: Hi-Temperature phenolic coating option --
Phenolic Coated C-III Series devices are available with improved
maximum operating maximum temperature of 125°C.
To order, add X1347 to end of part number
(Example: V230LA40CPX1347).
For additional information please refer to the section labeled
"Phenolic Coating Option" on the third page of this document
under the "Electrical Characteristics" table.
