V661DB40 [LITTELFUSE]
Varistor Products - High Energy Industrial; 压敏电阻产品 - 高能工业
| 型号： | V661DB40 |
| 厂家： | 
LITTELFUSE |
| 描述： | Varistor Products - High Energy Industrial |
| 文件： | 总4页 (文件大小：65K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Varistor Products
High Energy Industrial
®
DA/DB Varistor Series
The DA and DB Series transient surge suppressors are heavy-duty
industrial metal-oxide varistors designed to provide surge protection for
motor controls and power supplies used in oil-drilling, mining, and trans-
portation equipment.
These UL-recognized varistors have identical ratings and specifications
but differ in case construction to provide flexibility in equipment designs.
DA series devices feature rigid terminals to insure 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.
See DA/DB Series Device Ratings and Specifications table for part
number and brand information.
DA SERIES
Features
• High Energy Absorption Capability
DB SERIES
W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Up To 1050J
TM
• Wide Operating Voltage Range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130V to 750V
V
M(AC)RMS
• Screw Terminals (DA Series),
Quick Connect Push-On Connectors (DB Series)
• Case Design Provides Complete Electrical Isolation of
Disc Subassembly
• 40mm Diameter Disc
• No Derating Up to 85oC Ambient
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories.
AGENCY FILE NUMBERS: UL E75961.
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Varistor Products
High Energy Industrial
DA/DB Varistor Series
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 (V
DC Voltage Range (V
Transient:
Peak Pulse Current (I
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 750
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 to 970
V
V
M(AC)RMS
M(DC)
2
)
TM
For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,000
Single Pulse Energy Range
A
For 2ms Current Square Wave (W ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 to 1050
Operating Ambient Temperature Range (T ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85
A
J
oC
TM
Storage Temperature Range (T
STG
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125
oC
Temperature Coefficient (αV) of Clamping Voltage (V ) at Specified Test Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01
%/oC
V
C
Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
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.
Device Ratings and Specifications
o
o
MAXIMUM RATINGS (85 C)
SPECIFICATIONS (25 C)
CONTINUOUS TRANSIENT
MAX CLAMP-
ING VOLT V
AT 200A
CURRENT
(8/20µs)
C
PEAK
CURRENT
(8/20µs)
VARISTOR VOLTAGE AT
1mA DC TEST
TYPICAL
CAPACI-
TANCE
ENERGY
(2ms)
V
V
CURRENT
RMS
DC
PART NUMBER AND
DEVICE BRANDING
V
V
W
I
MIN
(V)
V
MAX
(V)
V
C
f = 1MHz
(pF)
M(AC)
M(DC)
TM
TM
N(DC)
DA
DB
(V)
(V)
(J)
(A)
(V)
(V)
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
228
268
429
473
561
748
825
910
1000
1160
1320
345
10000
8000
5000
4500
3800
3000
2700
2500
2200
2000
1800
405
650
730
830
1130
1240
1350
1480
1720
2000
1050
1200
NOTE: Average power dissipation of transients not to exceed 2.0W.
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 132VRMS
RMS
87
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Varistor Products
High Energy Industrial
DA/DB Varistor Series
Power Dissipation Ratings
100
90
Should transients occur in rapid succession, the average power dissipa-
tion 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 temperatures as shown in Figure 1. 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.
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90 100 110 120 130 140 150
o
AMBIENTTEMPERATURE ( C)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
O
= Virtual Origin of Wave
1
90
T = Time From 10% to 90% of Peak
T
T
= Virtual Front time = 1.25 • t
= Virtual Time to Half Value (Impulse Duration)
1
2
50
Example: For an 8/20µs Current Waveform:
8µs = T = Virtual Front Time
1
20µs = T = Virtual Time to Half Value
2
10
O
T
TIME
1
T
1
T
2
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curve
6,000
5,000
4,000
o
o
T
= -55 C to 85 C
MAXIMUM CLAMPING VOLTAGE
DISC SIZE 40mm
130 TO 750 VM(AC) RATING
A
V751DA/DB40
V661DA/DB40
V571DA/DB40
3,000
2,000
V511DA/DB40
V481DA/DB40
V421DA/DB40
1,000
900
800
700
600
500
400
V151DA/DB40
V131DA/DB40
V321DA/DB40
V271DA/DB40
V251DA/DB40
300
200
-2
10
-1
10
0
1
2
3
4
5
10
10
10
10
10
10
PEAK AMPERES (A)
FIGURE 3. CLAMPING VOLTAGE FOR V131DA40, V131DB40 - V751DA40, V751DB40
88
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Varistor Products
High Energy Industrial
DA/DB Varistor Series
Pulse Rating Curves
50,000
1
DISC SIZE 40mm
V131DA40 -V751DA40
V131DB40 -V751DB40
2
20,000
10,000
10
4
10
10
5
10
5,000
2
2
6
10
2,000
1,000
3
10
500
200
100
50
INDEFINITE
20
10
20
100
1,000
IMPULSE DURATION (µs)
10,000
FIGURE 5. SURGE CURRENT RATING CURVES FOR
V131DA40,V131DB40 - V751DA40, V751DB40
NOTE: If pulse ratings are exceeded, a shift of V
(at specified current) of more than ±10% could result.This type of shift, which normally results in a decrease of V ,
N(DC)
N(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.
Mechanical Dimensions
DB SERIES
DA 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)
(0.06)
67mm
(2.64)
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).
89
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