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CA Datasheet, PDF (2/8 Pages) Littelfuse – Varistor Products - High Energy Industrial Disc
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Varistor Products
High Energy Industrial Disc
CA Varistor Series
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous:
CA SERIES
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 to 2800
DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330 to 3500
Transient:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,000 to 70,000
Single Pulse Energy Range
For 2ms Current Square Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330 to 10,000
Operating Ambient Temperature Range (TA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 85
Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 85
Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01
UNITS
V
V
2
A
J
OC
OC
%OC
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.
Device Ratings and Specifications
MAXIMUM RATINGS (85 oC)
CONTINUOUS
TRANSIENT
MODEL
NUMBER
V131CA32
V151CA32
SIZE
(mm)
32
32
VRMS
VM(AC)
(V)
130
150
VDC
VM(DC)
(V)
175
200
ENERGY
(2ms)
WTM
(J)
200
220
PEAK
CURRENT
(8/20µs)
ITM
(A)
20000
20000
SPECIFICATIONS (25oC)
VARISTOR VOLTAGE AT
1mA DC TEST CURRENT
MAX
CLAMPING
VOLT VC AT
200A
CURRENT
(8/20µs)
MIN
VN(DC)
MAX
VC
(V)
(V)
(V)
(V)
184
200
228
350
212
240
268
410
TYPICAL
CAPACI-
TANCE
f = 1MHz
(pF)
4700
4000
V251CA32
32
250
330
V251CA40
40
V251CA60
60
V271CA32
32
275
369
V271CA40
40
V271CA60
60
V321CA32
32
320
420
V321CA40
40
V321CA60
60
V421CA32
32
420
560
V421CA40
40
V421CA60
60
V481CA32
32
480
640
V481CA40
40
V481CA60
60
V511CA32
32
510
675
V511CA40
40
V511CA60
60
V571CA32
32
575
730
V571CA40
40
V571CA60
60
V661CA32
32
660
850
V661CA40
40
V661CA60
60
330
370
880
360
400
950
390
460
1100
400
600
1500
450
650
1600
500
700
1800
550
770
2100
600
900
2300
20000
40000
50000
20000
40000
50000
20000
40000
50000
25000
40000
70000
25000
40000
70000
25000
40000
70000
25000
40000
70000
25000
40000
70000
354
390
429
389
430
473
462
510
561
610
680
748
670
750
825
735
820
910
805
910
1000
940
1050
1160
680
650
620
750
730
680
850
830
760
1200
1130
1060
1300
1240
1160
1440
1350
1300
1600
1480
1420
1820
1720
1640
2500
5000
10000
2200
4500
9000
1900
3800
7500
1500
3000
6000
1300
2700
5500
1200
2500
5000
1100
2200
4500
1000
2000
4000
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