V321DA40 [LITTELFUSE]
Industrial High Energy Terminal Varistors; 工业高能终端压敏电阻
| 型号： | V321DA40 |
| 厂家： | 
LITTELFUSE |
| 描述： | Industrial High Energy Terminal Varistors |
| 文件： | 总4页 (文件大小：114K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Varistor Products
Industrial High Energy Terminal Varistors > DA/DB Series
RoHS
DA/DB Varistor Series
Description
DA SERIES
The DA and DB Series transient surge suppressors
are heavy-duty industrial Metal-Oxide Varistors
(MOVs) designed to provide surge protection for
motor controls and power supplies used in oil-
drilling, mining, and transportation equipment.
These UL recognized varistors have identical ratings
and specifications but differ in case construction
to provide flexibility in equipment designs.
DB SERIES
DA Series devices feature rigid terminals to ensure
secure wire contacts. Both the DA and DB Series feature
improved creep and strike distance capability to minimize
breakdown along the package surface design that provides
complete electrical isolation of the disc subassembly.
Agency Approvals
Agency
Agency File Number
See DA/DB Series Device Ratings and Specifications
table for part number and brand information.
E320116
Features
•
RoHS compliant
and Lead–free
•
•
Screw terminals (DA
Series),quick connect
push-on connectors
(DB Series)
•
High energy
absorption capability
WTM up to 1050J
Case design provides
complete electrical
isolation of disc
•
Wide operating
voltage range
VM(AC)RMS 130V to 750V
subassembly
•
•
40mm diameter disc
No derating up to
85ºC ambient
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
DA/DB Series
Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS
)
130 to 750
175 to 970
V
V
DC Voltage Range (VM(DC)
)
Transients:
Peak Pulse Current (ITM
)
For 8/20μs Current Wave (See Figure 2)
40,000
A
Single Pulse Energy Range
For 2ms Current Squarewave (WTM
Operating AmbientTemperature Range (TA)
StorageTemperature Range (TSTG
)
270 to 1050
-55 to +85
-55 to +125
<0.01
J
ºC
)
ºC
Temperature Coefficient (aV) of Clamping Voltage (VC) at SpecifiedTest Current
%/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
5000
1000
V
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
COATING Insulation Resistance
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.
©2009 Littelfuse, Inc.
DA/DBVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/da or /db.html for current information.
Revision: October 29, 2009
Varistor Products
Industrial High Energy Terminal Varistors > DA/DB Series
DA/DB Series Ratings & Specifications
Maximum Rating (85ºC)
Continuous Transient
Specifications (25ºC)
Maximum
Typical
Capaci-
tance f =
1MHz
Clamping
Volt VC at
Varistor Voltage at 1mA
DCTest Current
Part Number
Device Branding
Peak
Energy
(2ms)
VRMS
VDC
Current
8 x 20μs
200A Current
(8/20μs)
VM(AC)
(V)
VM(DC)
(V)
WTM
(J)
ITM
Min
(V)
VNOM
(V)
Max
(V)
VC
C
DA
DB
(A)
(A)
(pF)
V131DA40
V151DA40
V251DA40
V271DA40
V321DA40
V421DA40
V481DA40
V511DA40
V571DA40
V661DA40
V751DA40
V131DB40
V151DB40
V251DB40
V271DB40
V321DB40
V421DB40
V481DB40
V511DB40
V571DB40
V661DB40
V751DB40
130
150
250
275
320
420
480
510
575
660
750
175
200
330
369
420
560
640
675
730
850
970
270
300
370
400
460
600
650
700
770
900
1050
400001
400002
40000
40000
40000
40000
40000
40000
40000
40000
40000
184
212
354
389
462
610
670
735
805
940
1080
200
240
390
430
510
680
750
820
910
1050
1200
228
268
429
473
561
748
345
10000
8000
5000
4500
3800
3000
2700
2500
2200
2000
1800
405
650
730
830
1130
1240
1350
1480
1720
2000
825
910
1000
1160
1320
Note : Average power dissipation of transients not to exceed 2.0W.
Power Dissipation Ratings
Peak Pulse CurrentTestWaveform
100
90
100
90
80
70
60
50
40
30
20
10
0
50
10
O
T
TIME
1
-55
50
60
70
80
90 100 110 120 130 140 15
o
T
1
Figure 1
T
2
AMBIENTTEMPERATURE ( C)
Figure 2
NOTES:
1. Peak current Applies to applications rated up to 115VRMS. Peak
current is 30kA for applications greater than 115V.
2. Peak current applies to applications rated up to 132VRMS. Peak
Current is 30kA for applications greater than 132V.
01 = Virtual Origin of Wave
T =Time from 10% to 90% of Peak
T1 = RiseTime = 1.25 xT
T2 = DecayTime
Should transients occur in rapid succession, the
average power dissipation required is simply 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
Example - For an 8/20 μs Current Waveform:
8μs =T1 = RiseTime
20μs =T2 = DecayTime
temperatures as shown 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.
©2009 Littelfuse, Inc.
DA/DBVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/da or /db.html for current information.
Revision: October 29, 2009
Varistor Products
Industrial High Energy Terminal Varistors > DA/DB Series
Maximum ClampingVoltage
Repetitive Surge Capability
V131DA40 -V751DA40 andV131DB40 -V751DB40
50,000
V131DA40 -V751DA40 andV131DB40 -V751DB40
6,000
o o
= -55 C to 85 C
1
DISC SIZE 40mm
V131DA40 - V751DA40
V131DB40 - V751DB40
T
MAXIMUM CLAMPING VOLTAGE
5,000
A
2
DISC SIZE 40mm
130 TO 750 VM(AC) RATING
20,000
10,000
10
4,000
V751DA/DB40
V661DA/DB40
V571DA/DB40
3,000
V511DA/DB40
V481DA/DB40
4
10
10
5
5,000
2
3
6
10
10
10
2,000
V421DA/DB40
2,000
1,000
1,000
900
800
700
600
500
200
100
50
500
400
V151DA/DB40
V131DA/DB40
V321DA/DB40
V271DA/DB40
V251DA/DB40
300
200
INDEFINITE
20
10
-2
-1
0
1
2
3
4
5
10
20
100
1,000
IMPULSE DURATION (μs)
10,000
10
10
10
10
10
10
10
PEAK AMPERES (A)
Figure 4
Figure 3
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 it does not
prevent the device from continuing to function, and to provide ample protection.
Physical Specifications
Environmental Specifications
DA - Copper, Tin–plated
Lead Material
Operating/Storage
Temperature
-55°C to +85°C/ -55°C to
+125°C
DB - Brass, Tin–plated
+85°C, 85% RH, 1000 hours
+/- 5% typical resistance
change
Cured, flame retardant epoxy polymer
Insulating Material
Humidity Aging
Thermal Shock
meets UL94V–0 requirements.
Marked with LF, part number and date
Device Labeling
+85°C to -40°C 10 times
+/- 5% typical resistance
change
code
Solvent Resistance
Moisture Sensitivity
MIL–STD–202, Method 215F
Level 1, J–STD–020C
©2009 Littelfuse, Inc.
DA/DBVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/da or /db.html for current information.
Revision: October 29, 2009
Varistor Products
Industrial High Energy Terminal Varistors > DA/DB Series
Product Dimensions (mm)
DA SERIES
DB SERIES
60.3
ALL DIMENSIONS ARE MAXIMUM
EXCEPT WHERE NOTED
“A”DIMENSION:
FILISTER HEAD SCREW - 51mm (2.01)
PAN HEAD SCREW - 53mm (2.09)
(2.37)
44.45 0.75
(1.75 0.03)
A
4.3mm
(0.170)
15mm (0.59)
25.4 0.75
(1.00 0.03)
46.8
(1.84)
23mm 1mm
(0.90 0.04)
M4 INTERNATIONAL
THREAD
HOLES 0.23THRU
BORE 0.370 x 0.370 DP
12.7
(0.50)
40.5
(1.6)
1.6
12.7
(0.50)
67mm
(2.64)
(0.06)
6.60
(0.26)
2 HOLES
6.60
(0.26)
57mm
(2.24)
41
(1.61)
23
(0.90)
62mm
(2.44)
4.5mm (0.18)
Dimensions in millimeters and (inches).
Part Numbering System
V XX X DA 40
VARISTOR
DISC SIZE (60mm)
V
M(AC)
FirstTwo Significant Digits*
SERIES DESIGNATOR
DA or DB
V
M(AC)
Decade Multiplier*
*Refer to Rating & Specifications table
Example:
130 VM(AC) = 131
©2009 Littelfuse, Inc.
DA/DBVaristor Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/da or /db.html for current information.
Revision: October 29, 2009
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