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Varistor Products
RA 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 (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 275
DC Voltage Range (VM(DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 to 369
Transient:
Peak Pulse Current (ITM)
For 8/20μs Current Wave (See Figure 2).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 to1200
Single Pulse Energy Range (Note 1)
For 10/1000μs Current Wave (WTM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 to 23
Operating Ambient Temperature Range (TA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125
Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 150
Temperature Coefficient (
α
V) of Clamping Voltage
(VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01
Hi-Pot Encapsulation (Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for
one minute per MIL-STD 202, Method 301)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
10to 275
14 to 369
4 to 275
18 to 369
V
V
1000 to 4500
2000 to 6500
A
3.5 to 75
-55 to -125
-55 to 150
70 to 160
-55 to -125
-55 to 150
J
O
C
O
C
<0.01
<0.01
%/
O
C
5000
1000
5000
1000
V
M
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
(Note 1)
RA8 SERIES RA16 SERIES RA22 SERIES UNITS
Low Profile
PART
NUMBER
BRAND
MAXIMUM RATINGS (125
o
C)
SPECIFICATIONS (25
o
C)
CONTINUOUS
TRANSIENT
VARISTOR VOLTAGE AT
1mA DC TEST
CURRENT
MAX CLAMPING
VOLTAGE V
C
AT
TEST CURRENT
(8/20
μ
s)
TYPICAL
CAPACI-
TANCE
V
RMS
V
M(AC)
(V)
V
DC
V
M(DC)
(V)
ENERGY
(10/1000
μ
s)
PEAK
CURRENT
(8/20
μ
s)
W
TM
(J)
I
TM
(A)
MIN
V
N(DC)
(V)
MAX
V
C
(V)
I
P
(A)
f = 1MHz
(V)
(V)
(pF)
RA8 SERIES
V8RA8
8R
4
5.5
0.4
150
6
8.2
11.2
22
5
3000
V12RA8
12R
6
8
0.6
150
9
12
16
34
5
2500
V18RA8
18R
10
14
0.8
250
14.4
18
21.6
42
5
2000
V22RA8
22R
14
18
(Note 3)
10
(Note 2)
250
18.7
22
26
47
5
1600
V27RA8
27R
17
22
1.0
250
23
27
31.1
57
5
1300
V33RA8
33R
20
26
1.2
250
29.5
33
36.5
68
5
1100
V39RA8
39R
25
31
1.5
250
35
39
43
79
5
900
V47RA8
47R
30
38
1.8
250
42
47
52
92
5
800
V56RA8
56R
35
45
2.3
250
50
56
62
107
5
700
V68RA8
68R
40
56
3.0
250
61
68
75
127
5
600
V82RA8
82R
50
66
4.0
1200
74
82
91
135
10
500
V100RA8
100R
60
81
5.0
1200
90
100
110
165
10
400
V120RA8
120R
75
102
6.0
1200
108
120
132
205
10
300
V150RA8
150R
95
127
8.0
1200
135
150
165
250
10
250
V180RA8
180R
115
153
10.0
1200
162
180
198
295
10
200
V200RA8
V220RA8
V240RA8
V270RA8
V360RA8
200R
130
175
11.0
1200
184
200
228
340
10
180
220R
140
180
12.0
1200
198
220
242
360
10
160
240R
150
200
13.0
1200
212
240
268
395
10
150
270R
175
225
15.0
1200
247
270
303
455
10
130
360R
230
300
20.0
1200
324
360
396
595
10
100