For ratings of individual members of a series, see Device Ratings and Specifications chart
C-III SERIES
Continuous:
Steady State AC Voltage Range (V
M(AC)RMS
)
Transients:
Single-Pulse Peak Current (I
TM
) 8/20µs Wave (See Figure 2)
Single-Pulse Energy Range (W
TM
) 2ms Rectangular Wave
Maximum Temporary Overvoltage of V
M(AC)
, (5 Minutes Duration)
Operating Ambient Temperature Range (T
A
)
Storage Temperature Range (T
STG
)
Temperature Coefficient (αV) of Clamping Voltage (V
C
) at Specified Test Current
130 to 320
6000 to 9000
45 to 210
130 (25
o
C)
120 (125
o
C)
-55 to 85
-55 to 125
<0.01
UNITS
V
A
J
%
%
o
C
o
C
%/
o
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 the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
C-III Series Ratings
MAXIMUM RATINGS (85
o
C)
CONTINUOUS
WITHSTANDING
ENERGY (2ms)
W
TM
(
)
(J)
45
90
90
50
100
100
55
110
110
60
120
120
80
160
160
100
170
170
110
190
190
120
210
210
130
220
TRANSIENT
PEAK CURRENT (8/20µs)
I
TM1
1 PULSE
(A)
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
9000
6000
9000
I
TM2
2 PULSES
(A)
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
7000
5000
7000
PART
NUMBER
V130LA10C
V130LA20C
V130LA20CX325
V140LA10C
V140LA20C
V140LA20CX340
V150LA10C
V150LA20C
V150LA20CX360
V175LA10C
V175LA20C
V175LA20CX425
V230LA20C
V230LA40C
V230LA40CX570
V250LA20C
V250LA40C
V250LA40CX620
V275LA20C
V275LA40C
V275LA40CX680
V300LA20C
V300LA40C
V300LA40CX745
V320LA20C
V320LA40C
BRAND
130L10C
130L20C
130CX325
140L10C
140L20C
140CX340
150L10C
150L20C
150CX360
175L10C
175L20C
175CX425
230L20C
230L40C
230X570
250L20C
250L40C
250CX620
275L20C
275L40C
275CX680
300L20C
300L40C
300CX745
320L20C
320L40C
MAXIMUM V
RMS
V
M(AC)
(V)
130
130
130
140
140
140
150
150
150
175
175
175
230
230
230
250
250
250
275
275
275
300
300
300
320
320
4-17
C-III Series
C-III Series Specifications
SPECIFICATIONS (25
o
C)
VARISTOR VOLTAGE AT 1mA
DC TEST CURRENT
PART
NUMBER
V130LA10C
V130LA20C
V130LA20CX325
V140LA10C
V140LA20C
V140LA20CX340
V150LA10C
V150LA20C
V150LA20CX360
V175LA10C
V175LA20C
V175LA20CX425
V230LA20C
V230LA40C
V230LA40CX570
V250LA20C
V250LA40C
V250LA40CX620
V275LA20C
V275LA40C
V275LA40CX680
V300LA20C
V300LA40C
V300LA40CX745
V320LA20C
V320LA40C
MODEL SIZE
DISC
DIAMETER (mm)
14
20
20
14
20
20
14
20
20
14
20
20
14
20
20
14
20
20
14
20
20
14
20
20
14
20
V
N
MIN
(V)
184
184
184
198
198
198
212
212
212
247
247
247
324
324
324
354
354
354
389
389
389
420
420
420
462
462
V
N
MAX
(V)
228
228
220
242
242
230
268
268
243
303
303
285
396
396
384
429
429
413
473
473
453
517
517
490
565
565
MAXIMUM CLAMPING
VOLTAGE
(8/20µs)
V
C
(V)
340
340
325
360
360
340
395
395
360
455
455
425
595
595
570
650
650
620
710
710
680
775
775
745
850
850
I
p
(A)
50
100
100
50
100
100
50
100
100
50
100
100
50
100
100
50
100
100
50
100
100
50
100
100
50
100
DUTY CYCLE
SURGE RATING
3kA
(8/20µs)
# PULSES
10
20
20
10
20
20
10
20
20
10
20
20
10
20
20
10
20
20
10
20
20
10
20
20
10
20
750A
(8/20µs)
# PULSES
80
120
120
80
120
120
80
120
120
80
120
120
80
120
120
80
120
120
80
120
120
80
120
120
80
120
NOTE: Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively.
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
device. The operating values of a MOV need to be derated at
high temperatures as shown in Figure 1. 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.
1.
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
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
4-18
C-III Series
PERCENT OF PEAK VALUE
100
90
50
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:
8µs = T
1
= Virtual Front Time
20µs = T
2
= Virtual Time to Half Value
10
O
1
T
T
1
T
2
TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
2,000
MAXIMUM PEAK VOLTAGE (V)
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
130 TO 320V
M(AC)
RATING
MAXIMUM PEAK VOLTAGE (V)
2,000
V320LA40C
V300LA40C
V275LA40C
V250LA40C
V230LA40C
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
130 TO 320V
M(AC)
RATING
1,000
V320LA20C
V300LA20C
V275LA20C
V250LA20C
V230LA20C
1,000
500
500
300
200
V175LA10C
V150LA10C
V140LA10C
V130LA10C
10
-2
10
-1
10
0
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
300
200
V175LA20C
V150LA20C
V140LA20C
V130LA20C
10
-2
10
-1
10
0
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
100
10
-3
100
10
-3
FIGURE 3. MAXIMUM CLAMPING VOLTAGE FOR V130LA10C
TO V320LA20C
FIGURE 4. MAXIMUM CLAMPING VOLTAGE FOR V130LA20C
TO V320LA40C
MAXIMUM PEAK VOLTAGE (V)
1,000
V300LA40CX745
V275LA40CX680
V250LA40CX620
V230LA40CX570
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
130 TO 300V
M(AC)
RATING
V175LA20CX425
V150LA20CX360
V140LA20CX340
V130LA20CX325
100
10
-3
10
-2
10
-1
10
0
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
FIGURE 5. MAXIMUM CLAMPING VOLTAGE FOR V130LA20CX325 TO V300LACX745
