V320LA40CX810P [LITTELFUSE]
RESISTOR, VOLTAGE DEPENDENT, 565V, 80J, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT;
| 型号： | V320LA40CX810P |
| 厂家： | 
LITTELFUSE |
| 描述： | RESISTOR, VOLTAGE DEPENDENT, 565V, 80J, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT |
| 文件： | 总8页 (文件大小：1042K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Varistor Products
High Energy, High Multiple Pulse Capability Radial Lead
V
D
E
®
RoHS Pb
®
C-III Varistor Series
The C-III Series of metal-oxide varistors are specifically designed for
applications requiring high surge energy absorption ratings and superior
multiple pulse absorbtion 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 appli-
cations requiring high transient energy and peak current capability in a
relatively small package size.
The C-III series is supplied in 10mm, 14mm and 20mm disc versions
with various lead options.
These types are shipped in bulk or Tape and Reel packaging. Part
number and brand information is provided in the Ratings table.
Features
• Lead-free and RoHS compliant option available. Please see the
device and ratings specifications table for more information.
• High Energy Absorption Capability
W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40J to 530J (2ms)
TM
• High Pulse Life Rating
NEW LEAD-FREE AND
• High Peak Pulse Current Capability
RoHS COMPLIANT PARTS
AVAILABLE
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3500A to 9000A (8/20µs)
TM
• Wide Operating Voltage Range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130V to 660V
V
M(AC)RMS
• Available in Tape and Reel for Automatic Insertion; Also Available with
Crimped and/or Trimmed Lead Styles
• No Derating Up to 85oC Ambient
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories. Certified by CSA, VDE and CECC. VDE certifica-
tion of Lead-free and RoHS compliant parts pending.
AGENCY FILE NUMBERS: UL E75961, CSA LR91788,
VDE 116895E, CECC 42201-006.
ALSO SEE LITTELFUSE
ULTRAMOV™ VARISTOR SERIES
48
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Varistor Products
High Energy Radial Lead
Pb
RoHS
C-III Varistor Series
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart
C-III SERIES
UNITS
Continuous:
Steady State AC Voltage Range (V
Transients:
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 660
V
M(AC)RMS
Single-Pulse Peak Current (I ) 8/20µs Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 to 9000
Single-Pulse Energy Range (W ) 2ms Rectangular Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 to 530
TM
A
J
TM
Maximum Temporary Overvoltage of V
M(AC):
5 Minutes Duration @ 25oC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
5 Minutes Duration @ 125oC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
%
%
Operating Ambient Temperature Range (T ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85
A
oC
oC
2
Storage Temperature Range (T
STG
)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to125
Temperature Coefficient ( V) of Clamping Voltage (V ) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.0
%/oC
C
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 thedevice
at these or any other conditions above those indicated in the operational sections of this specification is not implied.
C-III Series Ratings
o
MAXIMUM RATINGS (85 C)
RoHS Pb
LEAD-FREE
CONTINUOUS
TRANSIENT
PEAK CURRENT (8/20µs)
AND RoHS
COMPLIANT
MODELS
STANDARD
MODELS
WITHSTANDING
ENERGY (2ms)
MAXIMUM V
RMS
V
W
(
)
I
1 PULSE
(A)
I
TM2
2 PULSES
(A)
PART
NUMBER
PART
NUMBER
M(AC)
(V)
TM
(J)
TM1
BRANDING
BRANDING
V130LA5C
130L5C
130
130
130
130
40
3500
6000
9000
9000
3000
5000
7000
7000
V130LA5CP
P130L5C
V130LA10C
V130LA20C
V130LA20CX325
130L10C
130L20C
130CX325
80
200
200
V130LA10CP
V130LA20CP
V130LA20CX325P
P130L10C
P130L20C
P130CX325
V140LA5C
V140LA10C
140L5C
140L10C
140
140
45
90
3500
6000
3000
5000
V140LA5CP
V140LA10CP
P140L5C
P140L10C
V140LA20C
V140LA20CX340
140L20C
140CX340
140
140
210
210
9000
9000
7000
7000
V140LA20CP
V140LA20CX340P
P140L20C
P140CX340
V150LA5C
150L5C
150
150
150
150
50
100
215
215
3500
6000
9000
9000
3000
5000
7000
7000
V150LA5CP
P150L5C
V150LA10C
V150LA20C
V150LA20CX360
150L10C
150L20C
150CX360
V150LA10CP
V150LA20CP
V150LA20CX360P
P150L10C
P150L20C
P150CX360
V175LA5C
175L5C
175
175
175
175
55
110
220
220
3500
6000
9000
9000
3000
5000
7000
7000
V175LA5CP
P175L5C
V175LA10C
V175LA20C
V175LA20CX425
175L10C
175L20C
175CX425
V175LA10CP
V175LA20CP
V175LA20CX425P
P175L10C
P175L20C
P175CX425
V230LA10C
V230LA20C
V230LA40C
V230LA40CX570
230L10C
230L20C
230L40C
230X570
230
230
230
230
60
125
280
280
3500
6000
9000
9000
3000
5000
7000
7000
V230LA10CP
V230LA20CP
V230LA40CP
V230LA40CX570P
P230L10C
P230L20C
P230L40C
P230X570
V250LA10C
V250LA20C
V250LA40C
V250LA40CX620
250L10C
250L20C
250L40C
250CX620
250
250
250
250
65
135
300
300
3500
6000
9000
9000
3000
5000
7000
7000
V250LA10CP
V250LA20CP
V250LA40CP
V250LA40CX620P
P250L10C
P250L20C
P250L40C
P250CX620
V275LA10CP
V275LA20CP
P275L10C
P275L20C
V275LA10C
V275LA20C
275L10C
275L20C
275
275
70
145
3500
6000
3000
5000
V275LA40C
V275LA40CX680
275L40C
275CX680
275
275
320
320
V275LA40CP
V275LA40CX680P
P275L40C
P275CX680
9000
9000
7000
7000
V300LA10CP
V300LA20CP
V300LA40CP
V300LA40CX745P
P300L10C
P300L20C
P300L40C
P300CX745
V300LA10C
V300LA20C
V300LA40C
V300LA40CX745
300L10C
300L20C
300L40C
300CX745
300
300
300
300
75
155
335
335
3500
6000
9000
9000
3000
5000
7000
7000
V320LA10CP
V320LA20CP
V320LA40CP
V320LA40CX810P
P320L10C
P320L20C
P320L40C
P320CX810
V320LA10C
V320LA20C
V320LA40C
V320LA40CX810
320L10C
320L20C
320L40C
320CX810
320
320
320
320
80
165
345
345
3500
6000
9000
9000
3000
5000
7000
7000
V385LA20CP
V385LA40CP
P385L20C
P385L40C
V385LA20C
V385LA40C
385L20C
385L40C
385
385
175
370
6000
9000
5000
7000
V420LA20CP
V420LA40CP
P420L20C
P420L40C
V420LA20C
V420LA40C
420L20C
420L40C
420
420
185
390
6000
9000
5000
7000
V460LA40CP
V480LA80CP
V510LA80CP
P460L40C
P480L80C
P510L80C
V460LA40C
V480LA80C
V510LA80C
460L40C
480L80C
510L80C
460
480
510
430
420
440
9000
9000
9000
7000
7000
7000
V550LA80CP
V575LA80CP
P550L80C
P575L80C
V550LA80C
V575LA80C
550L80C
575L80C
550
575
450
460
9000
9000
7000
7000
V625LA80CP
V660LA80CP
P625L80C
P660L80C
V625LA80C
V660LA80C
625L80C
660L80C
625
660
490
510
9000
9000
7000
7000
49
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Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
C-III Series Specifications
o
SPECIFICATIONS (25 C)
RoHS Pb
MAXIMUM CLAMPING
VOLTAGE
LEAD-FREE
AND RoHS
COMPLIANT
MODELS
VARISTOR VOLTAGE AT 1mA
DC TEST CURRENT
DUTY CYCLE
SURGE RATING
µ
(8/20 s)
STANDARD
MODELS
MODEL SIZE
DISC
DIAMETER (mm)
3kA
750A
PART
NUMBER
PART
NUMBER
V
MIN
V
MAX
V
(V)
I
p
(A)
(8/20µs)
# PULSES
(8/20µs)
# PULSES
N
N
C
(V)
(V)
V130LA5CP
V130LA10CP
V130LA20CP
V130LA5C
V130LA10C
V130LA20C
10
14
20
20
184
184
184
184
228
228
228
220
340
340
340
325
25
50
100
100
2
40
80
80
100
600
1600
1600
V130LA20CX325P V130LA20CX325
V140LA5CP
V140LA10CP
V140LA20CP
V140LA5C
V140LA10C
V140LA20C
10
14
20
20
198
198
198
198
242
242
242
230
360
360
360
340
25
50
100
100
2
100
600
1600
1600
40
80
80
V140LA20CX340P V140LA20CX340
V150LA5CP
V150LA10CP
V150LA20CP
V150LA5C
V150LA10C
V150LA20C
10
14
20
20
212
212
212
212
268
268
268
243
395
395
395
360
25
50
100
100
2
100
600
1600
1600
40
80
80
V150LA20CX360P V150LA20CX360
V175LA5CP
V175LA10CP
V175LA20CP
V175LA5C
V175LA10C
V175LA20C
10
14
20
20
10
14
20
20
247
247
247
247
324
324
324
324
303
303
303
285
396
396
396
384
455
455
455
425
595
595
595
570
25
50
100
100
25
50
100
100
2
100
600
1600
1600
100
600
1600
1600
40
80
80
2
40
80
80
V175LA20CX425P V175LA20CX425
V230LA10CP
V230LA20CP
V230LA40CP
V230LA10C
V230LA20C
V230LA40C
V230LA40CX570P V230LA40CX570
V250LA10CP
V250LA20CP
V250LA40CP
V250LA10C
V250LA20C
V250LA40C
10
14
20
20
10
14
354
354
354
354
389
389
429
429
429
413
473
473
650
650
650
620
710
710
25
50
100
100
25
50
2
100
600
40
80
80
2
40
600
1600
100
V250LA40CX620P V250LA40CX620
V275LA10CP
V275LA20CP
V275LA10C
V275LA20C
600
1600
1600
V275LA40CP
V275LA40C
V275LA40CX680P V275LA40CX680
20
20
389
389
473
453
710
680
100
100
80
80
100
600
1600
1600
V300LA10CP
V300LA20CP
V300LA40CP
V300LA10C
V300LA20C
V300LA40C
10
14
20
20
420
420
420
420
517
517
517
490
775
775
775
745
25
50
100
100
2
40
80
80
V300LA40CX745P V300LA40CX745
100
600
1600
1600
V320LA10C
V320LA20C
V320LA40C
10
14
20
20
462
462
462
462
565
565
565
850
850
850
810
25
50
100
100
2
V320LA10CP
V320LA20CP
V320LA40CP
V320LA40CX810P
40
80
80
V320LA40CX810
540
600
1600
V385LA20C
V385LA40C
14
20
558
558
682
682
1025
1025
50
100
40
80
V385LA20CP
V385LA40CP
600
1600
V420LA20C
V420LA40C
14
20
610
610
748
748
1120
1120
50
100
40
80
V420LA20CP
V420LA40CP
1600
1600
1600
V460LA40C
V480LA80C
V510LA80C
20
20
20
640
670
735
790
825
910
1190
1240
1350
100
100
100
80
80
80
V460LA40CP
V480LA80CP
V510LA80CP
1600
V550LA80C
20
780
970
1435
100
80
V550LA80CP
1600
1600
1600
V575LA80C
V625LA80C
V660LA80C
20
20
20
805
900
940
1000
1100
1210
1500
1725
1820
100
100
100
80
80
80
V575LA80CP
V625LA80CP
V660LA80CP
•
NOTE: Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively.
• 7mm and 12mm parts also available-contact factory for further information
• For additional or intermediary voltage ratings contact factory
50
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Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
Power Dissipation Ratings
Should transients occur
in rapid succession, the
average power
100
100
90
90
O
= Virtual Origin of Wave
1
80
70
60
50
40
30
20
10
0
T = Time From 10% to 90% of Peak
dissipation is the energy
(watt-seconds) per pulse
times the number of puls-
es per second. The
power so developed
must be within the speci-
fications shown on the
Device Ratings and
T
T
= Virtual Front time = 1.25 • t
= Virtual Time to Half Value (Impulse Duration)
1
2
50
Example: For an 8/20 s Current Waveform:
8 s = T = Virtual Front Time
1
20 s = T = Virtual Time to Half Value
2
-55
50
60
70
80
90 100 110 120 130 140 150
o
AMBIENTTEMPERATURE ( C)
10
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
O
T
TIME
1
2
T
Specifications table for the specific device.The operating values
of a MOV need to be deratedat high temperatures as shown in
Figure 1. Because varistors only dissipate a relatively small
amount of average power they are not suitable 0for repetitive
applications that involve substantial amounts of average power
dissipation.
1
T
2
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
10,000
10,000
MODEL SIZE = 10mm
MODEL SIZE = 14mm
V420LA20C(P)
V385LA20C(P)
V320LA10C(P)
V300LA10C(P)
V230LA20C(P)
V320LA20C(P)
V300LA20C(P)
V275LA10C(P)
V250LA10C(P)
1,000
1,000
V275LA20C(P)
V250LA20C(P)
V230LA10C(P)
V175LA10C(P)
V150LA10C(P)
V175LA5C(P)
V150LA5C(P)
V140LA10C(P)
100
V140LA5C(P)
V130LA5C(P)
V130LA10C(P)
100
100
0.001
0.01
0.1
1
10000
1.0
1000
0.001
0.01
0.1
1
1.0
100
1000
10000
Peak Amperes (A)
Peak Amperes (A)
Figure 4. Maximum Clamping Voltage for 14mm Parts
Figure 3. Maximum Clamping Voltage for 10mm Parts
(V130LA10C(P) -V420LA20C(P))
(V130LA5C(P) -V320LA10C(P))
10,000
10,000
V660LA100C(P)
V625LA80C(P)
V575LA80C(P)
V510LA80C(P)
MODEL SIZE = 20mm
V300LA40CX810(P)
V300LA40CX745(P)
V420LA40C(P)
V480LA80C(P)
V275LA40CX680(P)
V250LA40CX620(P)
V385LA40C(P)
1,000
1,000
V230LA40CX570(P)
V320LA40C(P)
V300LA40C(P)
V275LA40C(P)
V230LA40C(P)
V250LA40C(P)
V175LA20C(P)
V175LA20CX425(P)
V150LA20C(P)
V150LA20CX360(P)
V140LA20CX340(P)
V130LA20CX325(P)
V140LA20C(P)
V130LA20C(P)
100
100
0.001
0.01
0.1
1
100
1
1000
10000
10000
0.001
1.0
1.0
1000
0.01
0.1
100
Peak Amperes (A)
Peak Amperes (A)
Figure 6. Maximum Clamping Voltage for Low Clamping
Figure 5. Maximum Clamping Voltage for 20mm Parts
Voltage Parts (V130LA20CX325(P) -V300LA40CX245(P))
(V130LA20C(P) -V660LA100C(P))
51
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Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
Pulse Rating Curves
10,000
10,000
1
1
MODEL SIZE = 10mm
2
2
10
10
MODEL SIZE = 14mm
10
1,000
2
2
10
10
1,000
3
3
3
10
10
10
4
10
4
4
0
10
1
100
10
1
100
10
10
100
1,000
10,000
10
100
1,000
10,000
Surge Impulse Duration (µs)
Surge Impulse Duration (µs)
Figure 7. Repetitive Surge Capability for 10mm Parts
Figure 8. Repetitive Surge Capability for 14mm Parts
(V130LA5C(P)-V320LA10C(P))
(V130LA10C(P)-V420LA20C(P))
10,000
1
2
10
CIII series varistors for Hi-Temperature operating conditions:
• Phenolic Coated CIII Series devices are available with improved maxi-
mum operating maximum temperature 125°C.
MODEL SIZE = 20mm
2
10
1
• These devices also have improved temperature cycling performance
capability.
1,000
13
10
• 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. V230LA40CX1347)
• These devices are not UL, CSA, VDE or CECC certified.
• Contact factory for further details.
4
10
100
10
10,000
1,000
10
100
Surge Impulse Duration (µs)
Figure 9. Repetitive Surge Capability for 20mm Parts
(V130LA20C(P)-V660LA100C(P))
52
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Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
Tape and Reel Specification(available for voltage ratings up to 320V only)
P
E
P2
DP
DP
MODEL SIZE
10mm 14mm 20mm
25.4 ± 1.0
DH
DH
SYMBOL
DESCRIPTION
Pitch of Component
Feed Hole Pitch
P
P
P
P
12.7 ± 0.2
0
1
2
C
SEATING
PLANE
H1
Feed Hole Center to Pitch
8.85 ± 0.8
W0 W2 W1
H0
∆b
Hole Center to Component
Center
12.7 ± 0.7
2
W
F
Lead to Lead Distance
Component Alignment
Tape Width
7.50 ± 0.8
2.00 Max
∆D0
h
t
P1
P1
F
W
18.25 ± 0.75
12.0 ± 0.3
9.125 ± 0.625
0.5 Max
W
Hold Down Tape Width
Hole Position
Crimped Leads "LT"
0
1
2
W
W
Hold Down Tape Position
P
E
P2
DP
DP
H
Height From Tape Center To
Component Base
19.0 ± 1.0
DH
DH
H
Seating Plane Height
Component Height
Feed Hole Diameter
Total Tape Thickness
Component Alignment
Under-crimp Width
16.0 ± 0.5
36 Max 40 Max 46.5Max
4.0 ± 0.2
0
1
0
H
D
H1
W2 W1
W0
H
t
0.7 ± 0.2
∆b
o
p
U
3
Max
W
8.0 Max
∆D0
t
P1
P0
F
Straight Leads "LS"
P
E
P2
DP
DP
DH
DH
U
H1
W2 W1
W0
Ho
∆b
W
∆D0
t
F
P1
P0
ped Leads "LU"
Under-crim
53
www. lit t elf us e. c om
Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
Tape and Reel Data
Additional Lead Style Options
Radial lead types can be supplied with combination preformed crimp and
trimmed leads. This option is suppliedto the dimensions shown below.
*Seating plane interpretation per IEC-717
• Conforms to ANSI and EIA Specifications
• Can be supplied to IEC publication 286-2
• Radial devices on tape and reel are supplied with either
crimped leads, straight leads, or under-crimped leads
VARISTOR MODEL SIZE
• Available for voltage ratings up to 320V only
10mm
MAX
14mm
20mm
Tape and Reel Ordering Information
SYMBOL MIN
MIN
MAX
MIN
MAX
• Crimped leads are standard on LA types supplied in tape
and reel and are denoted by the model letter “T”. Also, in
tape and reel, model letter “S” denotes straight leads and
letter “U” denotes special under-crimped leads.
A
-
19.5
(0.768)
-
23.5
(0.925)
-
30
(1.18)
L
2.41
(0.095)
4.69
(0.185)
2.41
(0.095)
4.69
(0.185)
2.41
(0.095)
4.69
(0.185)
TRIM
Example:
NOTE: Dimensions are in millimeters (inches).
UNDER
STANDARD
MODEL
CRIMPED
LEADS
STRAIGHT
LEADS
CRIMP
LEADS
V130LA20C
V130LT20C
V130LS20C
V130LU20C
SEATING
PLANE
*
A
Shipping Quantity
QUANTITY PER REEL
DEVICE SIZE
10mm
“T”REEL
“S”REEL
500
“U”REEL
LTRIM
500
500
500
500
500
14mm
20mm
500
500
500
CRIMPED AND TRIMMED LEAD
Mechanical Dimensions
• To order this crimped and trimmed lead style, the standard radial
type model number “LA” is changed to the model number “LC”.This
option is supplied in bulk only.
ØD
A
STANDARD MODEL
ORDER AS
V130LA20C
V130LC20C
25.4
(1.00)
Øb
Example:
• For 10 ± 1mm lead spacing on 20mm units only; append standard
model numbers by adding “X10” suffix.
e
e1
E
Example:
VARISTOR MODEL SIZE
14mm
VRMS
VOLTAGE
MODEL
STANDARD MODEL
ORDER AS
10mm
20mm
MIN
SYMBOL
MIN
MAX
16
MIN
MAX
MAX
V130LA20C
V130LC20C
13.5
17.5
(0.689)
12
A
ALL
ALL
ALL
20
26.5
(1.043)
(0.531)
(0.472)
(0.630)
(0.787)
10
12.5
13.5
(0.531)
17.5
(0.689)
ØD
e
17
(0.669)
23
(0.906)
(0.394)
(0.492)
• For other lead style variations to the above, please contact Littelfuse.
6.5
8.5
6.5
(0.256)
8.5
(0.335)
6.5
(0.256)
8.5
(0.335)
(0.256)
(0.335)
2.5 (0.098) 5.5 (0.216) 2.5 (0.098) 5.5 (0.216)
4.5 (0.177) 9.0 (0.354) 4.5 (0.177) 9.0 (0.354)
e1
130 - 320
>320
2.5
(0.098)
5.5
(0.216)
-
-
7.3 (0.287)
11 (0.433)
-
-
7.3 (0.287)
11 (0.433)
E
130 - 320
>320
7.3
(0.287)
-
0.86
(0.034)
0.76
(0.030)
Øb
ALL
0.76
(0.030)
0.86
(0.034)
0.76
(0.030)
0.86
(0.034)
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.
54
www. lit t elf us e. c om
Varistor Products
High Energy Radial Lead
RoHS Pb
C-III Varistor Series
Additionally, all 20mm C-III devices are listed to the “Permanently
Ordering Information
Connected” category (10kA) of UL1449, by Underwriter’s Laboratories, Inc.
C-III series Varistors are shipped standard in bulk pack with straight
leads and lead spacing outlined in the package dimensions on page 4-
13. Contact your Littelfuse sales representative to discuss the non-stan-
dard options outlined below.
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 100 pulses, each of 3kA, there was negligible change
in the device characteristics. Changes in the clamping voltage, measured
at 100 amps, of less than 3% were recorded (Figure 9). Samples of the
14mm Series V175LA20C were subjected to repetitive surge occurrences
of 750A. Again, there was negligible changes in any of the device
characteristics after 2000 pulses (Figure 10). In both cases the inherent
device capability is far in excess of the expected worst case scenario.
For Lead-free and RoHS compliant parts add the letter ‘P’ after the base
part number and before any option as shown in the ordering example
below.
ex: V150LS20CP
2
V300LS40CPX745
300
250
200
150
100
V130LA20C
Other Options
Base Part #
+ Optional Suffix
V XXX LA XX C
P
VARISTOR
P: LEAD-FREE AND
RoHS COMPLIANT OPTION
V
RELATIVE ENERGY INDICATOR
(One or Two Digits)
M(AC)
130V to 1,000V
0
100 200 300 400 500 600 700 800 900 1000 1100
TIME (HOURS)
SERIES DESIGNATOR/
LEADSTYLE DESIGNATOR
LC = Crimped and Clipped
LS = Straight
o
FIGURE 8. HIGHTEMPERATURE OPERATING LIFE 125 C
FOR 1000 HOURS AT RATED BIAS
LT = Crimped
LU = Under Crimped
500
V130LA20C
3kA (8/20µs)
AC Bias Reliability
450
The C-III series of metal oxide varistors was 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.
400
350
(RATED FOR 80 PULSES)
300
0
10 20 30 40 50 60 70 80 90 100 110 120
NUMBER OF SURGES
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 tempera-
ture of 125oC, although only rated at 85oC. Changes in the nominal varistor
voltage, measured at 1mA, of less than 2% have been recorded (Figure 8).
FIGURE 9. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITYOF C-III SERIES MOVs
600
V175LA20C
750A (8/20µs)
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.
550
500
450
400
350
300
(RATED FOR 1600 PULSES)
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 occu rences of five 3kA
transients is the required capability, the rated, repetitive surge current for
the C-III series is 80 pulses for the 20mm units and 40 pulses for the
0
200 400
600
800 1000 1200 1400 1600 2000
NUMBER OF SURGES
FIGURE 10. TYPICAL REPETITIVE SURGE CURRENT
CAPABILITYOF C-III SERIES MOVs
55
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