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Varistor Products
2
VARISTOR
PRODUCTS
High Energy Industrial Square Disc
NA 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
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 to 750 V
DC Voltage Range (V
M(DC)
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330 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
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 to1050 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
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
NA SERIES UNITS
MODEL
NUMBER
SIZE
MAXIMUM RATINGS (85
o
C) SPECIFICATIONS (25
o
C)
CONTINUOUS TRANSIENT
VARISTOR VOLTAGE
AT 1mA DC TEST
CURRENT
MAXIMUM
CLAMPING
VOLTAGE
(V
C
) AT 200A
(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
(mm) (V) (V) (J) (A) (V) (V) (V) (V) (pF)
V131NA34
V141NA34
34
34
130
140
175
188
270
291
40,000 184
198 220
200 228
248
345
375
10,000
V151NA34 34 150 200 300 40,000 212 240 268 405 8,000
9,000
V251NA34 34 250 330 370 40,000 354 390 429 650 5,000
V271NA34 34 275 369 400 40,000 389 430 473 730 4,500
V321NA34 34 320 420 460 40,000 462 510 561 830 3,800
V421NA34 34 420 560 600 40,000 610 680 748 1,130 3,000
V481NA34 34 480 640 650 40,000 670 750 825 1,240 2,700
V511NA34 34 510 675 700 40,000 735 820 910 1,350 2,500
V571NA34 34 575 730 770 40,000 805 910 1000 1,480 2,200
V661NA34 34 660 850 900 40,000 940 1050 1160 1,720 2,000
V751NA34 34 750 970 1050 40,000 1080 1200 1320 2,000 1,800
NOTE: Average power dissipation of transients not to exceed 2.0W.
1
40,000
3
2
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 .
3. Peak current applies to applications rated up to 123V . Peak current is 30kA for applications greater than 123V .
RMS
RMS
RMS
RMS
RMS
RMS
