Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01
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.
UNITS
V
V
2
VARISTOR
PRODUCTS
A
J
C
O
C
%/
O
C
O
Device Ratings and Specifications
MAXIMUM RATINGS (85
o
C)
CONTINUOUS
TRANSIENT
ENERGY
(10/1000µs)
W
TM
(J)
70
70
80
80
130
130
140
140
160
160
165
165
170
170
180
180
190
190
220
220
250
PEAK
CURRENT
(8/20µs)
I
TM
(A)
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
VARISTOR VOLTAGE
AT 1mA DC
TEST CURRENT
MIN
(V)
184
184
212
212
354
354
389
389
462
462
500
500
610
610
670
670
735
735
805
805
940
V
N(DC)
(V)
200
200
240
240
390
390
430
430
510
510
559
535
680
680
750
750
820
820
910
910
1050
MAX
(V)
243
220
284
243
453
413
494
453
565
540
618
570
790
690
860
790
963
860
1050
960
1210
MAX CLAMPING
VOLT V
C
AT TEST
CURRENT (8/20µs)
V
C
(V)
360
325
420
360
675
620
740
680
850
800
910
840
1160
1050
1280
1160
1410
1280
1560
1410
1820
I
P
(A)
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
TYPICAL
CAPACI-
TANCE
f = 1MHz
(pF)
1900
1900
1600
1600
1000
1000
900
900
750
750
700
700
600
600
550
550
500
500
450
450
400
133
SPECIFICATIONS (25
o
C)
V
RMS
PART NUMBER
AND DEVICE
BRANDING
V130PA20A
V130PA20C
V150PA20A
V150PA20C
V250PA40A
V250PA40C
V275PA40A
V275PA40C
V320PA40A
V320PA40C
V350PA40A
V350PA40C
V420PA40A
V420PA40C
V480PA80A
V480PA80C
V510PA80A
V510PA80C
V575PA80A
V575PA80C
V660PA100A
V
M(AC)
(V)
130
130
150
150
250
250
275
275
320
320
350
350
420
420
480
480
510
510
575
575
660
V
DC
V
M(DC)
(V)
175
175
200
200
330
330
369
369
420
420
460
460
560
560
640
640
675
675
730
730
850
w w w. l i t t e l f u s e . c o m
Varistor Products
Base Mount
PA Varistor Series
Power Dissipation Ratings
PERCENT OF RATED VALUE
100
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130
140 150
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 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.
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
Transient V-I Characteristics Curves
6,000
5,000
4,000
MAXIMUM PEAK VOLTS (V)
3,000
2,000
MAXIMUM CLAMPING VOLTAGE
V660PA80A
“A” SUFFIX
V575PA80A
130 TO 660V
M(AC)
RATING
V510PA80A
T
A
= -55
o
C TO 85
o
C
V480PA80A
V420PA80A
6,000
5,000
4,000
MAXIMUM PEAK VOLTS (V)
3,000
2,000
MAXIMUM CLAMPINGVOLTAGE
“C”SUFFIX
130 TO 660V
M(AC)
RATING
T
A
= -55
o
C TO 85
o
C
V660PA100C
V575PA80C
V510PA80C
V480PA80C
V420PA80C
1,000
900
A40A
800
700
600
500
V320PA40A
400
V150PA20A
300
V130PA20A
200
10
-3
10
-2
V275PA40A
V250PA40A
1,000
900
800
700 V350PA40C
600
500
400 V320PA40C
300
V150PA20C
V275PA40C
V250PA40C
10
-1
10
0
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
V130PA20C
200
-3
10
10
-2
10
-1
10
0
10
1
10
2
PEAK AMPERES (A)
10
3
10
4
FIGURE 3. CLAMPING VOLTAGE FOR V130PA20A -
V660PA100A
134
FIGURE 4. CLAMPING VOLTAGE FOR V130PA20C -
V660PA100C
w w w. l i t t e l f u s e . c o m
Varistor Products
Base Mount
PA Varistor Series
Pulse Rating Curves
10,000
5,000
2,000
SURGE CURRENT (A)
1,000
500
200
100
50
20
10
5
2
1
20
100
1,000
IMPULSE DURA
TION (
µs)
10,000
INDEFINITE
1
2
10
10
2
DISC SIZE 20mm
V130PA20A -V320PA40C
10,000
5,000
2,000
SURGE CURRENT (A)
1,000
500
200
100
50
20
10
5
2
1
20
100
1,000
IMPULSE DURA
TION (
µs)
10,000
INDEFINITE
1
2
10
DISC SIZE 20mm
V420PA40A -V660PA100C
10
2 3
10
10
4
10
5
10
6
10
3
10
4
10
5
10
6
2
VARISTOR
PRODUCTS
FIGURE 5. SURGE CURRENT RATING CURVES FOR
V130PA20A - V320PA40C
FIGURE 6. SURGE CURRENT RATING CURVES FOR
V420PA40A - V660PA100C
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 transient protection
Mechanical Dimensions
D
Q
S
F
C
B
T
C
ØP
2 HOLES
T
ØD
1
b
b
3
ØT
TAB
E
J
b
2
H
1, 2, 3
A
h
SEATING
PLANE
SYM-
BOL
A
b
b2
b3
B
C
D
ØD1
MILLIMETERS
MIN
-
-
3.94
3.05
-
-
-
-
-
7.50
-
-
-
-
-
5.6
50.6
18.4
-
2.8
-
NOM
-
-
4.06
3.17
-
-
-
-
11.2
7.62
0.8
-
-
-
-
-
50.8
19.2
-
-
3.2
MAX
14.3
6.6
MIN
-
-
INCHES
NOM
-
-
0.160
0.125
-
-
-
-
0.440
0.300
0.030
-
-
-
-
-
2.000
0.75
-
-
0.126
MAX
0.570
0.260
0.165
0.130
0.510
0.260
2.610
1.320
-
0.305
0.040
1.010
1.120
1.290
0.320
0.240
2.010
0.78
0.040
-
-
NOTES
-
1
-
-
-
-
-
-
-
-
-
3
3
3
-
-
-
-
-
-
2
135
4.18 0.155
3.29 0.120
12.9
6.6
66.3
33.5
-
-
-
-
-
-
NOTES:
1. Tab is designed to fit 1/4” quick-connect terminal.
2. Case temperature is measured at T
C
on top surface of base
plate.
3. H
1
(130-150V
RMS
devices).
H
2
(250-320V
RMS
devices).
H
3
(420-660V
RMS
devices).
4. Electrical connection: top terminal and base plate.
5. Typical weight: 30g.
E
F
h
H
1
H
2
H
3
J
ØP
Q
S
T
ØT
T
C
7.75 0.295
1.0
25.6
28.3
32.8
8.1
6.0
51.0
20.0
1.0
-
-
-
-
-
-
-
0.220
1.990
0.72
-
0.110
-
w w w. l i t t e l f u s e . c o m
Varistor Products
Base Mount
PA Varistor Series
Suggested Hardware and Mounting Arrangements
TYPICAL NON-ISOLATED MOUNTING
TYPICAL ISOLATED MOUNTING
#10-32 PAN HEAD
SCREW
THERMAL
QUICK
CONNECT
(NOTE 6)
THERMAL
GREASE
LA
YER
#6-32 SCREW
#6 FLA WASHER
T
PHENOLIC SHOULDER
WASHER
SPACER
VARISTOR
MICA INSULATOR
MOUNTING
SURFACE
LOCK WASHER
#6-32 NUT
#10 FLA WASHER
T
THERMAL
GREASE
LA
YER
VARISTOR
MOUNTING
SURFACE
LOCK WASHER
#10-32 NUT
NOTE:
6. GE G623, Dow Corning, DC3, 4, 340, or 640 Thermal Grease recommended for best heat transfer.
1,000V Isolation Kit containing the following parts can be ordered by part #A7811055 (Qty).
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