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V131DB40

  • V131DB40
  • V131DB40
V131DB40
VARISTOR
Littelfuse
VARISTOR 184V 4
-
YES
86
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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.
Features
• High Energy Absorption Capability
W
TM
..........................................Up To 1050J
• Wide Operating Voltage Range
V
M(AC)RMS
...................................130V to 750V
• 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 85
o
C Ambient
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories.
AGENCY FILE NUMBERS: UL E75961.
DB SERIES
DA SERIES
®
87
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Varistor Products
2
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:
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 750 V
DC Voltage Range (V
M(DC)
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 to 970 V
Transient:
Peak Pulse Current (I
TM
)
For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,000 A
Single Pulse Energy Range
For 2ms Current Square Wave (W
TM
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 to 1050 J
Operating Ambient Temperature Range (T
A
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85
o
C
Storage Temperature Range (T
STG
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125
o
C
Temperature Coefficient (αV) of Clamping Voltage (V
C
) at Specified Test Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 %/
o
C
Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000 V
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 M
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
DA/DB SERIES
UNITS
PART NUMBER AND
DEVICE BRANDING
MAXIMUM RATINGS (85
o
C) SPECIFICATIONS (25
o
C)
CONTINUOUS TRANSIENT
VARISTOR VOLTAGE AT
1mA DC TEST
CURRENT
MAX CLAMP-
ING VOLT V
C
AT 200A
CURRENT
(8/20µs)
TYPICAL
CAPACI-
TANCEV
RMS
V
DC
ENERGY
(2ms)
PEAK
CURRENT
(8/20µs)
V
M(AC)
V
M(DC)
W
TM
I
TM
MIN V
N(DC)
MAX V
C
f = 1MHz
DA DB (V) (V) (J) (A) (V) (V) (V) (V) (pF)
V131DA40 V131DB40 130 175 270 40000 184 200 228 345 10000
V151DA40 V151DB40 150 200 300 40000 212 240 268 405 8000
V251DA40 V251DB40 250 330 370 40000 354 390 429 650 5000
V271DA40 V271DB40 275 369 400 40000 389 430 473 730 4500
V321DA40 V321DB40 320 420 460 40000 462 510 561 830 3800
V421DA40 V421DB40 420 560 600 40000 610 680 748 1130 3000
V481DA40 V481DB40 480 640 650 40000 670 750 825 1240 2700
V511DA40 V511DB40 510 675 700 40000 735 820 910 1350 2500
V571DA40 V571DB40 575 730 770 40000 805 910 1000 1480 2200
V661DA40 V661DB40 660 850 900 40000 940 1050 1160 1720 2000
V751DA40 V751DB40 750 970 1050 40000 1080 1200 1320 2000 1800
NOTE: Average power dissipation of transients not to exceed 2.0W.
1: Peak current applies to applications rated up to 115V . Peak Current is 30kA for applications greater than 115V .
2: Peak current applies to applications rated up to 132V . Peak Current is 30kA for applications greater than 132V .
RMS
RMS
RMS
RMS
1
2
88
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Varistor Products
High Energy Industrial
DA/DB Varistor Series
Power Dissipation Ratings
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.
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
PERCENT OF RATED VALUE
AMBIENT TEMPERATURE (
o
C)
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O
1
T
T
1
T
2
TIME
PERCENT OF PEAK VALUE
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
Transient V-I Characteristics Curve
FIGURE 3. CLAMPING VOLTAGE FOR V131DA40, V131DB40 - V751DA40, V751DB40
200
6,000
5,000
4,000
3,000
1,000
900
800
700
600
500
400
300
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
MAXIMUM CLAMPING VOLTAGE
DISC SIZE 40mm
130 TO 750 VM(AC) RATING
T
A
= -55
o
C to 85
o
C
V421DA/DB40
V151DA/DB40
V751DA/DB40
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
V131DA/DB40
V321DA/DB40
V271DA/DB40
V251DA/DB40
V511DA/DB40
V481DA/DB40
V571DA/DB40
V661DA/DB40
2,000

1

49.858

49.858

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