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
Series BA and BB Varistors are listed under UL file #E75961 as a UL recognized component.
MAXIMUM RATINGS (85
o
C)
CONTINUOUS
TRANSIENT
ENERGY
(2ms)
W
TM
(J)
450
530
880
950
1100
1500
1600
1800
2100
2300
2600
3200
3800
5000
6000
7500
8600
10000
PEAK
CURRENT
(8/20µs)
I
TM
(A)
50000
50000
50000
50000
50000
70000
70000
70000
70000
70000
70000
70000
70000
70000
70000
70000
70000
70000
VARISTOR VOLTAGE
AT 1mA DC
TEST CURRENT
MIN
(V)
184
212
354
389
462
610
670
735
805
940
1080
1290
1620
2020
2500
2970
3510
4230
V
N(DC)
(V)
200
240
390
430
510
680
750
820
910
1050
1200
1500
1800
2200
2700
3300
3900
4700
MAX
(V)
228
268
429
473
561
748
825
910
1000
1160
1320
1650
2060
2550
3030
3630
4290
5170
MAX CLAMPING
VOLT V
C
AT 200A
CURRENT (8/20µs)
V
C
(V)
340
400
620
680
760
1060
1160
1300
1420
1640
1880
2340
2940
3600
4300
5200
6200
7400
TYPICAL
CAPACI-
TANCE
f = 1MHz
(pF)
20000
16000
10000
9000
7500
6000
5500
5000
4500
4000
3500
2700
2200
1800
1500
1200
1000
800
SPECIFICATIONS (25
o
C)
V
RMS
PART NUMBER
AND DEVICE
BRANDING
V131BA60
V151BA60
V251BA60
V271BA60
V321BA60
V421BA60
V481BA60
V511BA60
V571BA60
V661BA60
V751BA60
V881BA60
V112BB60
V142BB60
V172BB60
V202BB60
V242BB60
V282BB60
V
M(AC)
(V)
130
150
250
275
320
420
480
510
575
660
750
880
1100
1400
1700
2000
2400
2800
V
DC
V
M(DC)
(V)
175
200
330
369
420
560
640
675
730
850
970
1150
1400
1750
2150
2500
3000
3500
NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
4-47
BA/BB Series
Power Dissipation Ratings
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 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.
100
PERCENT OF RATED VALUE
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130
140 150
AMBIENT TEMPERATURE (
o
C)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
PERCENT OF PEAK VALUE
100
90
50
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
10
O
1
T
T
1
T
2
TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Typical Performance Curves
TYPICAL TEMPERATURE COEFFICIENT
OF POWER DISSIPATION = 2.2%/
o
C
1.0
0.8
POWER DISSIPATION (W) PER kV
OF RATED V
RMS
0.6
0.4
MAX AT T
A
= 25
o
C
MAX AT T
A
= 85
o
C
POWER DISSIPATION (W) PER kV
OF RATED V
RMS
0.5
1,000 HOURS, T
A
= 85
o
C
0.4
0.3
0.2
0.2
0.1
0.08
0.06
0.04
TYP AT T
A
= 25
o
C
0.1
80
90
100
110
0
0
10
100
TIME AT RATED V
RMS
(HOURS)
1,000
PERCENTAGE OF MAXIMUM RATED V
RMS
(%)
FIGURE 3. STANDBY POWER DISSIPATION vs APPLIED
V
RMS
AT VARIED TEMPERATURES
FIGURE 4. TYPICAL STABILITY OF STANDBY POWER
DISSIPATION AT RATED V
RMS
vs TIME
4-48
BA/BB Series
Transient V-I Characteristics Curves
6,000
5,000
4,000
MAXIMUM PEAK VOLTS (V)
3,000
2,000
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
130 TO 880V
M(AC)
RATING
T
A
= -55
o
C TO 85
o
C
V881BA60
V751BA60
V661BA60
V571BA60
30,000
V511BA60
V481BA60
V421BA60
MAX PEAK VOLTS (V)
20,000
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
1100 TO 2800V
M(AC)
RATING
T
A
= -55
o
C TO 85
o
C
1,000
900
800
700
600
V321BA60
500
V271BA60
V251BA60
400
300
V151BA60
V131BA60
200
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
10,000
9,000
8,000
7,000
6,000
V282BB60
5,000
V242BB60
4,000
V202BB60
3,000
V142BB60
V112BB60
V172BB60
2,000
10
-2
10
-1
10
0
PEAK AMPERES (A)
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
10
5
FIGURE 5. CLAMPING VOLTAGE FOR V131BA60 - V881BA60
FIGURE 6. CLAMPING VOLTAGE FOR V112BB60 - V282BB60
Pulse Rating Curves
50,000
20,000
10,000
SURGE CURRENT (A)
SURGE CURRENT (A)
5,000
2,000
1,000
500
200
100 10
6
50
20
10
20
INDEFINITE
10
2
10
3
10
4
10
5
10
1
2
100,000
DISC SIZE 60mm
V131BA60 - V321BA60
50,000
20,000
10,000
5,000
2,000
1,000
500
200
100
50
20
1,000
IMPULSE DURATION (µs)
10,000
10
20
INDEFINITE
100
1,000
10,000
10
6
10
2
10
3
10
4
10
5
1
10
2
DISC SIZE 60mm
V421BA60 - V282BB60
100
IMPULSE DURATION (µs)
FIGURE 7. SURGE CURRENT RATING CURVES FOR
V131BA60 - V321BA60
FIGURE 8. SURGE CURRENT RATING CURVES FOR
V421BA60 - V282BB60
NOTE: If pulse ratings are exceeded, a shift of V
N(DC)
(at specified current) of more than
±10%
could result. This type of shift, which normally results
in a decrease of V
N(DC)
, may result in the device not meeting the original published specifications, but it does not prevent the device from continuing
Dimensions are in mm; inches in parentheses for reference only.
Ordering Information
V XX X XX 60
HARRIS VARISTOR
DISC SIZE (60mm)
V
M(AC)
First Significant Digits
V
M(AC)
Decade Multiplier
SERIES DESIGNATOR
All Harris Semiconductor products are manufactured, assembled and tested under
ISO9000
quality systems certification.
Harris Semiconductor products are sold by description only. Harris Semiconductor reserves the right to make changes in circuit design and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Harris is believed to be accurate
and reliable. However, no responsibility is assumed by Harris or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may
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