BA, BB Series Datasheet by Littelfuse Inc.

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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > BA/BB Series
BA/BB Varistor Series
Description
The BA and BB 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,
transportation equipment and other heavy industrial AC line
applications.
These varistors have similar package construction but differ
in size and ratings. The BA models are rated from 130 to
880VM(AC). The BB models from 1100 to 2800VM(AC).
Both the BA and BB Series feature improved creep and
strike capability to minimize breakdown along the package
surface, a package design that provides complete electrical
isolation of the disc subassembly, and rigid terminals to
ensure secure wire contacts.
See BA/BB Series Device Ratings and Specifications Table
for part number and brand information.
Features
High energy absorption
capability WTM
BA Series 3200J
BB Series 10,000J
Wide operating voltage
range VM(AC)RMS
BA Series 130V to 880V
BB Series 1100V to 2800V
Rigid terminals for
secure wire contact
Case design provides
complete electrical
isolation of disc
subassembly
Littelfuse largest
packaged disc
60mm diameter
No derating up to
85ºC ambient
RoHS compliant
Agency Approvals
Absolute Maximum Ratings
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.
Continuous BA Series BB Series Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS) 130 to 880 1100 to 2800 V
DC Voltage Range (VM(DC)) 175 to 1150 1400 to 3500 V
Transients:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2) 50,000 to 70,000 70,000 A
Single Pulse Energy Range
For 2ms Current Squarewave (WTM) 450 to 3200 3800 to 10000 J
Operating Ambient Temperature Range (TA) -55 to +85 -55 to +85 OC
Storage Temperature Range (TSTG) -55 to +125 -55 to +125 OC
Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current <0.01 <0.01 %/OC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301) 5000 5000 V
COATING Insulation Resistance 1000 1000
RoHS
BB Series
BA Series
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency Agency Approval Agency File Number
UL1449 E320116 - for BA Series only.
Additional Information
Datasheet Samples
Resources
Datasheet Samples
Resources
BA
BB
BA
BB
BA
BB
% Litteltuse” ExnevhxeADnlled \ AnswevxDelweved
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > BA/BB Series
BA/BB Series Ratings & Specifications
Part
Number
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient
Varistor Voltage at 1mA
DC Test Current
Maximum
Clamping Volt
VC at 200A
Current (8/20µs)
Typical
Capaci-
tance f =
1MHz
VRMS VDC
Energy
(2ms)
Peak
Current
8 x 20µs
VM(AC) VM(DC) WTM ITM Min VN(DC) Max VC C
(V) (V) (J) (A) (V) (V) (V) (V) (pF)
BA Series
V131BA60 130 175 450 50000 184.5 205 225.5 340 20000
V151BA60 150 200 530 50000 216 240 264 400 16000
V251BA60 250 330 880 50000 351 390 429 620 10000
V271BA60 275 369 950 50000 387 430 473 680 9000
V321BA60 320 420 110 0 50000 459 510 561 760 7500
V421BA60 420 560 1500 70000 612 680 74 8 1060 6000
V481BA60 480 640 1600 70000 675 750 825 116 0 5500
V511BA60 510 675 1800 70000 738 820 902 1300 5000
V571BA60 575 730 2100 70000 819 910 1001 1420 4500
V661BA60 660 850 2300 70000 945 1050 1155 1640 4000
V751BA60 750 970 2600 70000 1080 1200 1320 1880 3500
V881BA60 880 115 0 3200 70000 1350 1500 1650 2340 2700
BB Series
V112BB60 110 0 1400 3800 70000 1665 1850 2035 2940 2200
V142BB60 1400 1750 5000 70000 2070 2300 2530 3600 1800
V172BB60 1700 2150 6000 70000 2500 2765 3030 4300 1500
V202BB60 2000 2500 7500 70000 2970 3300 3630 5200 1200
V242BB60 2400 3000 8600 70000 3510 3900 4290 6200 1000
V282BB60 2800 3500 10000 70000 4230 4700 5170 74 0 0 800
NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > BA/BB Series
FIGURE 3. STANDBY POWER DISSIPATION vs APPLIED
V
RMS
AT VARIED TEMPERATURES
TYPICAL TEMPERATURE COEFFICIENT
OF POWER DISSIPATION = 2.2%/
o
C
MAX AT T
A
= 85
o
C
MAX AT T
A
= 25
o
C
TYP AT T
A
= 25
o
C
1.0
0.8
0.6
0.4
0.2
0.1
0.08
0.06
0.04
80 90 100110
PERCENTAGE OF MAXIMUM RATED V
RMS
(%)
POWER DISSIPATION (W) PER kV
OF RATED V
RMS
Stand by Power Dissipation vs Applied VRms at Varied
Temperatures
Typical Stability of Standby Power Dissipation at Rated
VRMS vs Time
FIGURE 4. TYPICAL STABILITY OF STANDBY POWER
DISSIPATION AT RATED V
RMS
vs TIME
1,000 HOURS, T
A
= 85
o
C
0.5
0.4
0.3
0.2
0.1
0010100 1,000
POWER DISSIPATION (W) PER kV
OF RATED V
RMS
TIME AT RATED V
RMS
(HOURS)
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 Characteristics Table for the specific device. Furthermore,
the operating values need to be derated at high temperatures as
shown in the above diagram. 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.
Power Dissipation Ratings
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE (
o
C)
PERCENT OF RATED VALUE
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
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 8/20 s Current Waveform:
8s = T
1
= Virtual Front Time
20 s = T
2
= Virtual Time to Half Value
Peak Pulse Current Test Waveform
01 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example - For an 8/20 µs Current Waveform:
8µs = T1 = Rise Time
20µs = T2 = Decay Time
Figure 1 Figure 2
Figure 3 Figure 4
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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > BA/BB Series
Maximum Clamping Voltage BA Series Maximum Clamping Voltage BB Series
V131BA60 - V881BA60 V112BB60 - V282BB60
Repetitive Surge Capability BA Series Repetitive Surge Capability BB Series
V131BA60 - V321BA60 V421BA60 - V282BB60
FIGURE 6. CLAMPING VOLTAGE FOR V112BB60 - V282BB60
30,000
20,000
10,000
9,000
8,000
7, 000
6,000
5,000
4,000
3,000
2,000
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
PEAK AMPERES (A)
MAX PEAK VOLTS (V)
V282BB60
V242BB60
V202BB60
V172BB60
V142BB60
V112BB60
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
1100 TO 2800V
M(AC)
RATING
T
A
= -55
o
C TO 85
o
C
FIGURE 5. CLAMPING VOLTAGE FOR V131BA60 - V881BA60
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
130 TO 880V
M(AC)
RATING
T
A
= -55
o
C TO 85
o
C
6,000
5,000
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
PEAK AMPERES (A)
V881BA60
V751BA60
V661BA60
V571BA60
V151BA60
V131BA60
MAXIMUM PEAK VOLTS (V)
V511BA60
V481BA60
V421BA60
V321BA60
V271BA60
V251BA60
FIGURE 7. SURGE CURRENT RATING CURVES FOR
V131BA60 - V321BA60
50,000
20,000
10,000
5,000
2,000
1,000
500
200
100
50
20
10
SURGE CURRENT (A)
IMPULSE DURATION (μs)
1,000 10,000
10
10
2
10
3
10
4
10
5
INDEFINITE
10
6
20 100
2
DISC SIZE 60mm
V131BA60 - V321BA60
1
FIGURE 8. SURGE CURRENT RATING CURVES FOR
V421BA60 - V282BB60
100,000
50,000
20,000
10,000
5,000
2,000
1,000
500
200
100
50
20
10
20 100 1,000 10,000
IMPULSE DURATION s)
10
10
2
10
3
10
4
10
5
10
6
2
1DISC SIZE 60mm
V421BA60 - V282BB60
INDEFINITE
SURGE CURRENT (A)
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.
Operating Temperature -55°C to +85°C
Storage Temperature -55°C to +125°C
Humidity Aging +85°C, 85% RH, 1000 hours
+/- 5% typical resistance change
Thermal Shock +85°C to -40°C 10 times
+/- 5% typical resistance change
Solvent Resistance MIL–STD–202, Method 215
Moisture Sensitivity Level 1, J-STD-020
Lead Material BA / BB – Copper with Tin Plating
Insulating Material Cured, flame retardant epoxy polymer
meets UL94V–0 requirements.
Device Labeling Marked with LF, Part Number and Date
code
Physical Specifications Environmental Specifications
Figure 5 Figure 6
Figure 7 Figure 8
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > BA/BB Series
Dimensions
Notes:
Typical weight: BA Series:250g and BB Series: 600g
Dimensions are in mm; inches in parentheses for reference only.
Part Numbering System
VARISTOR
VM(AC)
First Tw o Significant Digits*
VM(AC)
VM(AC)
VM(AC)
Decade Multiplier*
(1 or 2)
*Refer to Rating & Specifications table
Examples:
130 VM(AC) = 131
2800 VM(AC) = 282
DISC SIZE (60mm)
SERIES DESIGNATOR
BA or BB
V XX XBA60
86±2
(3.38±0.08)
100 (3.94)
6 (0.24)
40±2
(1.575 ± 0.08) M6 INTERNATIONAL
THREAD
79±3
(3.11±0.12)
95 (3.74)
MAX
BB Series
40.0 (1.575)
M6 INTERNATIONAL THREAD
PAN HEAD SLOTTED SCREW
44.5
(1.752)
10.5
(0.41)
10.5
(0.41)
86.0 (3.38)
100 (3.94)
86±2
(3.38±0.08)
100 (3.94)
6 (0.24)
40±2
(1.575 ± 0.08) M6 INTERNATIONAL
THREAD
79±3
(3.11±0.12)
95 (3.74)
MAX
BA Series
40.0 (1.575)
M6 INTERNATIONAL THREAD
PAN HEAD SLOTTED SCREW
23.5
(0.925)
86.0 (3.38)
100 (3.94)
7. 0
(0.28)
7. 0
(0.28)
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.

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