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Varistor Products Industrial High Energy Terminal Varistors > BA/BB Series
RoHS
BA/BB Varistor Series Description BB Series
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. BA Series
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.
Agency Approvals Agency
These UL– recognized 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).
Agency File Number
E320116 - for BA Series only.
See BA/BB Series Device Ratings and Specifications Table for part number and brand information. Features
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
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 (VM(AC)RMS)
BA Series
DC Voltage Range (VM(DC))
BB Series
Units
130 to 880
1100 to 2800
V
175 to 1150
1400 to 3500
V
50,000 to 70,000
70,000
A
450 to 3200 -55 to +85 -55 to +125 <0.01
3800 to 10000 -55 to +85 -55 to +125 <0.01
J C O C %/OC
5000
5000
V
1000
1000
MΩ
Transients: Peak Pulse Current (ITM) For 8/20µs Current Wave (See Figure 2) Single Pulse Energy Range For 2ms Current Squarewave (WTM) Operating Ambient Temperature Range (TA) Storage Temperature Range (TSTG) Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current Hi-Pot Encapsulation (COATING Isolation Voltage Capability) (Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301)
COATING Insulation Resistance
O
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. ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
BA/BB Varistor Series Revision: September 25, 2011
HI–ENERGY BA/BBMOV’S Series
• High energy absorption capability WTM
Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
BA/BB Series Ratings & Specifications Maximum Rating (85°C) Continuous Part Number
BA Series V131BA60 V151BA60 V251BA60
Specifications (25°C)
Transient Varistor Voltage at 1mA DC Test Current
Maximum Clamping Volt VC at 200A Current (8/20µs)
Typical Capacitance 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)
130 150 250
175 200 330
450 530 880
50000 50000 50000
184 212 354
200 240 390
228 268 429
340 400 620
20000 16000 10000
V271BA60
275
369
950
50000
389
430
473
680
9000
V321BA60 V421BA60 V481BA60 V511BA60 V571BA60 V661BA60 V751BA60 V881BA60
320 420 480 510 575 660 750 880
420 560 640 675 730 850 970 1150
1100 1500 1600 1800 2100 2300 2600 3200
50000 70000 70000 70000 70000 70000 70000 70000
462 610 670 735 805 940 1080 1290
510 680 750 820 910 1050 1200 1500
561 748 825 910 1000 1160 1320 1650
760 1060 1160 1300 1420 1640 1880 2340
7500 6000 5500 5000 4500 4000 3500 2700
BB Series V112BB60 V142BB60 V172BB60 V202BB60 V242BB60 V282BB60
1100 1400 1700 2000 2400 2800
1400 1750 2150 2500 3000 3500
3800 5000 6000 7500 8600 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 not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
©2011 Littelfuse, Inc.
BA/BB Varistor Series Revision: September 25, 2011
Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Varistor Products Industrial High Energy Terminal Varistors > BA/BB Series
Peak Pulse Current Test Waveform
PERCENT OF PEAK VALUE
Power Dissipation Ratings
90 80 70 60 50 40 30 20
50
60
50
70
80
90
100
110
120
130
10
140 150
Figure 2
FIGURE 1. CURRENT, ENERGY AND POWER DERATING CURVE
0.5
POWER DISSIPATION (W) PER kV OF RATED V RMS
POWER DISSIPATION (W) PER kV OF RATED V RMS
1,000 HOURS, TA = 85oC
0.6 0.4 MAX AT TA = 25oC
0.1 0.08
TYP AT TA = 25oC
0.06 0.04
80
T2
Typical Stability of Standby Power Dissipation at Rated VRMS vs Time
MAX AT TA = 85oC
0.2
TIME
FIGURE 2. PEAK PULSE CURRENT TE
TYPICAL TEMPERATURE COEFFICIENT OF POWER DISSIPATION = 2.2%/ oC 1.0 0.8
T
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
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.
Stand by Power Dissipation vs Applied VRms at Varied Temperatures
Example: For 8 s = T1 = V 20 s = T 2 = V
T1
AMBIENT TEMPERATURE ( oC)
Figure 1
O1 = Virtua T = Time T 1 = Virtua T 2 = Virtua
90
O1
10 0 -55
100
90
100
110
FIGURE 3. STANDBY POWER DISSIPATION vs APPLIED VRMS AT VARIED TEMPERATURES
Figure 4
0.2 0.1
0
10 100 TIME AT RATED V RMS (HOURS)
1,000
FIGURE 4. TYPICAL STABILITY OF STANDBY POWER DISSIPATION AT RATED V RMS vs TIME
©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
0.3
0
PERCENTAGE OF MAXIMUM RATED V RMS (%)
Figure 3
0.4
BA/BB Varistor Series Revision: September 25, 2011
HI–ENERGY BA/BBMOV’S Series
PERCENT OF RATED VALUE
100
Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
Maximum Clamping Voltage BA Series
Maximum Clamping Voltage BB Series
V131BA60 - V881BA60
30,000 MAX CLAMPING VOLTAGE DISC SIZE 60mm 130 TO 880VM(AC) RATING TA = -55oC TO 85oC
3,000
V511BA60 V481BA60 V421BA60
V881BA60 V751BA60 V661BA60 V571BA60
1,000 900 800 700 600 V321BA60 500 V271BA60 V251BA60
V112BB60
10 -1
10 0
Figure 5
10 1 10 2 10 3 PEAK AMPERES (A)
10 4
10 3
1,000
10 4
DISC SIZE 60mm V131BA60 - V321BA60
20,000
10 5 10 6
10 2
5,000 2,000
10 3
1,000
10 4
500
10 5
200 10 6
100 50
50 20
10 5
2
10
10,000
200 100
10 4
DISC SIZE 60mm V421BA60 - V282BB60
1
50,000
SURGE CURRENT (A)
SURGE CURRENT (A)
2
10
2,000
10 3
Repetitive Surge Capability BB Series
100,000
5,000
10 1 10 2 PEAK AMPERES (A)
V421BA60 - V282BB60
1
10 2
10 0
FIGURE 6. CLAMPING VOLTAGE FOR V112BB60 - V282BB60
V131BA60 - V321BA60 50,000
10 -1
Figure 6
Repetitive Surge Capability BA Series
500
2,000 10 -2
10 5
FIGURE 5. CLAMPING VOLTAGE FOR V131BA60 - V881BA60
10,000
V282BB60
5,000 V242BB60 4,000 V202BB60 3,000 V142BB60
300 V151BA60 V131BA60
20,000
10,000 9,000 8,000 7,000 6,000
V172BB60
400
200 10 -2
MAX CLAMPING VOLTAGE DISC SIZE 60mm 1100 TO 2800VM(AC) RATING TA = -55oC TO 85oC
20,000
MAX PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
6,000 5,000 4,000
2,000
V112BB60 - V282BB60
INDEFINITE
10 20
Figure 7
20
INDEFINITE
10 100
1,000 IMPULSE DURATION (μs)
20
10,000
100
1,000
10,000
IMPULSE DURATION ( μs)
Figure 8
FIGURE 8. SURGE CURRENT RATING CURVES FOR V421BA60 - V282BB60
FIGURE 7. SURGE CURRENT RATING CURVES FOR
NOTE: If pulse ratings areV131BA60 exceeded, a- V321BA60 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
Lead Material
BA / BB – Copper with Tin Plating
Operating/Storage Temperature
-55°C to +85°C/ -55°C to +125°C
Insulating Material
Cured, flame retardant epoxy polymer meets UL94V–0 requirements.
Humidity Aging
Device Labeling
Marked with LF, Part Number and Date code
+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 215F
Moisture Sensitivity
Level 1, J–STD–020C
©2011 Littelfuse, Inc.
BA/BB Varistor Series Revision: September 25, 2011
Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
10.5 (0.41)
Varistor Products 44.5 (1.752)
Industrial High Energy Terminal Varistors > BA/BB Series
7.0 (0.28)
10.5 (0.41) 86.0 (3.38) 100 (3.94)
Dimensions
40±2 (1.575 ± 0.08)
BA Series M6 INTERNATIONAL THREAD
40.0 (1.575)
M6 INTERNATIONAL THREAD PAN HEAD SLOTTED SCREW
23.5 (0.925)
7.0 (0.28)
86.0 (3.38)
95 (3.74) MAX
100 (3.94)
79±3 (3.11±0.12)
BB Series 40.0 (1.575)
6 (0.24)
M6 INTERNATIONAL THREAD PAN HEAD SLOTTED SCREW
10.5 (0.41)
86±2 (3.38±0.08) 100 (3.94)
44.5 (1.752)
7.0 (0.28)
Notes: Typical weight: BA Series:250g and BB Series: 600g Dimensions are in mm; inches in parentheses for reference only.
10.5 (0.41) 86.0 (3.38) 100 (3.94)
40±2 (1.575 ± 0.08)
Part Numbering System
M6 INTERNATIONAL THREAD
V XX X BA 60 VARISTOR
DISC SIZE (60mm)
VM(AC)
SERIES DESIGNATOR
First Two Significant Digits*
95 (3.74) MAX 79±3 (3.11±0.12)
BA or BB
VM(AC)
6 (0.24) 86±2 (3.38±0.08)
*Refer to Rating & Specifications table Examples: 130 VM(AC) = 131 2800 VM(AC) = 282
100 (3.94)
©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
HI–ENERGY BA/BBMOV’S Series
Decade Multiplier* (1 or 2)
BA/BB Varistor Series Revision: September 25, 2011
