V112CA60NC [LITTELFUSE]
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| 型号： | V112CA60NC |
| 厂家： | 
LITTELFUSE |
| 描述： | 暂无描述 电阻器 压敏电阻 非线性电阻器 |
| 文件： | 总5页 (文件大小：181K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Varistor Products
High Energy Industrial Disc Varistors > CA Series
CA Varistor Series
Description
The CA Series of transient surge suppressors are industrial
high-energy disc varistors (MOVs) intended for special
applications requiring unique electrical contact or packaging
methods provided by the customer. The electrode finish
of these devices is solderable and can also be used with
pressure contacts. Discs of the same diameter may be
stacked.
This series of industrial disc varistors are nominal 60mm
diameter, with disc thickness ranging from 2.0mm
minimum to 32mm maximum. The voltage range is 250V
to 2800 V(AC)RMS
.
For information on soldering considerations, refer to EC637
"Recommendations for SolderingTerminal Leads to MOV
Varistor Discs."
Features
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nominal 60mm
diameter
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current range
50000A to 70000A
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capability Wtm
passivation insulation
880J to 10000J
Absolute Maximum Ratings
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Continuous
CA Series
Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS
)
250 to 2800
330 to 3500
V
V
DC Voltage Range (VM(DC)
)
Transient:
Peak Pulse Current (ITM
)
For 8/20μs Current Wave(See Figure 2)
20,000 to 70,000
A
Single-Pulse Energy Range
For 2ms Current Square Wave (WTM
Operating Ambient Temperature Range (TA)
Storage Temperature Range (TSTG
Temperature Coefficient (V) of Clamping Voltage (VC) at Specified Test Current
)
880 to 10,000
-55 to +85
- 55 to +85
<0.01
J
°C
)
°C
%/°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.
©2009 Littelfuse, Inc.
177
CAVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ca.html for current information.
Revision: September 3, 2009
Varistor Products
High Energy Industrial Disc Varistors > CA Series
CA Series Ratings & Specifications
Maximum Rating (85°C)
Continuous Transient
Specifications (25°C)
Max Clamping
Varistor Voltage at 1mA
DCTest Current
Volt Vc at 200A
Current
Typical
Capacitance
Part
Peak
Current
(8/20μs)
Size
Energy
(2ms)
Number
VDC
VRMS
(8/20μs)
Device Branding
VM(AC)
(V)
VM(DC)
(V)
WTM
(J)
ITM
Min
(V)
VNOM
(V)
Max
(V)
VC
f = 1MHz
(pF)
(mm)
60
(A)
(A)
V251CA60
V271CA60
V321CA60
V421CA60
V481CA60
V511CA60
V571CA60
V661CA60
V751CA60
V881CA60
250
275
320
330
369
420
880
950
1100
50000
50000
50000
354
389
462
390
430
510
429
473
561
620
680
760
10000
9000
60
60
7500
60
60
60
60
60
60
60
420
480
510
575
660
750
880
560
640
675
730
850
970
1150
1500
1600
1800
2100
2300
2600
3200
70000
70000
70000
70000
70000
70000
70000
610
670
680
750
748
825
1060
1160
1300
1420
1640
1880
2340
6000
5500
5000
4500
4000
3500
2700
735
820
910
805
910
1000
1160
1320
1650
940
1050
1200
1500
1080
1290
V112CA60
V142CA60
V172CA60
V202CA60
V242CA60
V282CA60
60
60
60
60
60
60
1100
1400
1700
2000
2400
2800
1400
1750
2150
2500
3000
3500
3800
5000
6000
7500
8800
10000
70000
70000
70000
70000
70000
70000
1620
2020
2500
2970
3510
4230
1800
2200
2700
3300
3900
4700
2060
2550
3030
3630
4290
5170
2940
3600
4300
5200
6200
7400
2200
1800
1500
1200
1000
800
NOTE: Average power dissipation of transients should not exceed 2.5W for CA60 discs.
Power Dissipation Ratings
Peak Pulse CurrentTestWaveform
100
90
80
70
60
50
40
30
20
10
0
100
90
50
10
O
T
T
TIME
1
-55 50 60 70 80
90 100 110 120 130 140 150
o
1
T
AMBIENT TEMPERATURE ( C)
2
Figure 2
Figure 1
Should transients occur in rapid succession, the average power
dissipation result 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. Furthermore, the
operating values need to be derated at high temperatures as
shown in above. Because varistors can only dissipate a relatively
small amount of average power they are, therefore, not suitable
for repetitive applications that involve substantial amounts of
average power dissipation.
01 = Virtual Origin of Wave
T =Time from 10% to 90% of Peak
T1 = RiseTime = 1.25 xT
T2 = DecayTime
Example - For an 8/20 μs Current Waveform:
8μs =T1 = RiseTime
20μs =T2 = DecayTime
©2009 Littelfuse, Inc.
178
Revision: September 3, 2009
CAVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ca.html for current information.
Varistor Products
High Energy Industrial Disc Varistors > CA Series
Maximum ClampingVoltage for 60mm Parts
Repetitive Surge Capability for 60mm Parts
V251CA60 -V881CA60
V251CA60 -V321CA60
50,000
6,000
5,000
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
1
DISC SIZE 60mm
V251CA60 - V321CA60
V511CA60
V481CA60
V421CA60
20,000
10,000
2
4,000
10
250 TO 880V
RATING
M(AC)
o
= -55 C TO 85 C
o
3,000
2,000
T
A
2
10
5,000
V881CA60
V751CA60
V661CA60
V571CA60
3
4
5
2,000
1,000
500
10
10
10
1,000
900
800
700
600
200
100
V321CA60
V271CA60
V251CA60
6
10
500
400
50
300
200
INDEFINITE
20
10
20
-2
-1
0
1
2
3
4
5
10
100
1,000
IMPULSE DURATION (μs)
10,000
10
10
10
10
10
10
10
PEAK AMPERES (A)
Figure 4
Figure 3
V112CA60 -V282CA60
V421CA60 -V282CA60
100,000
30,000
DISC SIZE 60mm
V421CA60 - V282CA60
1
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
50,000
1100 TO 2800V
o
RATING
20,000
10
10,000
2
M(AC)
o
= -55 C TO 85 C
20,000
T
A
2
5,000
10
3
4
10
10
2,000
1,000
10,000
9,000
8,000
7,000
6,000
500
5
10
V282CA60
V242CA60
V202CA60
200
100
50
5,000
4,000
6
10
V172CA60
V142CA60
3,000
20
10
20
INDEFINITE
100
V112CA60
2,000
1,000
10,000
-2
-1
0
1
2
3
4
5
10
10
10
10
10
10
10
10
IMPULSE DURATION (μs)
PEAK AMPERES (A)
Figure 6
Figure 5
NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than
+/-10% could result. This type of shift, which normally results in a decrease of VN(DC), may
result in the device not meeting the original published specifications, but does not prevent
the device from continuing to function, and to provide ample protection.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ca.html for current information.
179
Revision: September 3, 2009
CAVaristor Series
Varistor Products
High Energy Industrial Disc Varistors > CA Series
Physical Specifications
Environmental Specifications
Soldering
Characteristics
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Method 208E
Operating/Storage
Temperature
-55°C to +85°C
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+/-10% typical voltage change
Insulating Material glass passivation on edge only
Humidity Aging
+85°C to -55°C 10 times
+/-10% typical voltage change
Device Labeling
none
Thermal Shock
Product Dimensions (mm)
Solvent Resistance
Moisture Sensitivity
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OPTIONAL
PASSIVATION
COLLAR
ELECTRODE
2.5 mm
0.1 inch
Weight
Typical Discweight
Model Number
(Grams)
V251CA60
V271CA60
V321CA60
V421CA60
V481CA60
V511CA60
V571CA60
V661CA60
V751CA60
V881CA60
V112CA60
V142CA60
V172CA60
V202CA60
V242CA60
V282CA60
39
ELECTRODE
THICKNESS
42
50
DIAMETER
66
(SEE TABLE)
71
80
88
Disc Diameter
101
116
141
178
220
265
317
377
450
Model
Millimeters
Inches
Size
Min
58.0
Max
Min
Max
60
62.0
2.283
2.441
DiscThickness
Millmeters Inches
Model
VRMS
VM(AC)
Min.
2.0
Max.
2.7
Min.
0.079
0.087
0.102
0.138
0.165
0.181
0.209
0.240
0.287
0.362
0.453
0.551
0.669
0.787
0.945
Max.
0.106
0.118
0.138
0.185
0.224
0.248
0.283
0.327
0.406
0.512
0.630
0.748
0.886
1.063
1.260
250
275
2.2
3.0
320
2.6
3.5
420
3.5
4.7
510
4.2
5.7
575
4.6
6.3
660
5.3
7.2
750
6.1
8.3
880
7.3
10.3
13.0
16.0
19.0
22.5
27.0
32.0
1100
1400
1700
2000
2400
2800
9.2
11.5
14.0
17.0
20.0
24.0
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ca.html for current information.
180
CAVaristor Series
Revision: September 3, 2009
Varistor Products
High Energy Industrial Disc Varistors > CA Series
Passivation Layer
Electrode Metallization
The standard CA Series is supplied with passivation
layer around the outside perimeter of the disc forming
an electrical insulator as detailed in the dimensional
drawing. For other options contact factory. (See Ordering
Information)
CA60 discs are supplied as standard with sintered Silver
electrodes. For other available options please contact
Littelfuse.
Recommended ReflowTemperature Profile
Encapsulated Recommendations
250
200
150
100
50
After lead attachment, the disc/lead assembly may be
coated or encapsulated in a package to provide electrical
insulation and isolation from environmental contamination
as required by the application. Coating/Filler materials for
containers may include silicones, polyurethanes, and some
epoxy resins. Materials containing halogens, sulfides, or
alkalines are not recommended.
Stacking and Contact Pressure Recommendations
0
When applications require the stacking of CA60 discs,
or when an electrical connection is made by pressure
contacts, the pressure applied to the CA60 disc electrode
surface should be minimum 2.2kgs (5 pounds) and
maximum 4N/CM2 (5.7LBs/IN2).
0
100 200 300 400 500 600 700
TIME (SEC)
800 900
Part Numbering System
V 25 1 CA 60
Packaging and Shipping
The CA Series is supplied in bulk for shipment. Discs are
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scratching or edge-chipping during shipment.
VARISTOR DESIGNATOR
MAX AC
WORKING VOLTAGE
RMS
(FIRST SIGNIFICANT DIGITS) V
No branding or any other type of marking appears on the
CA disc itself.
M(AC)
V
VOLTAGE DECADE MULTIPLIER
M(AC)
CA60 discs are supplied as standard with sintered Silver
electrodes and glass passivation. For other available
options please contact factory.
SERIES DESIGNATOR
DISC SIZE (mm) DIAMETER
©2009 Littelfuse, Inc.
181
Revision: September 3, 2009
CAVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ca.html for current information.
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