Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
RA Varistor Series
RoHS
Description
The RA Series transient surge suppressors are varistors
(MOVs) supplied in a low-profile box that features a precise
seating plane to increase mechanical stability for secure
circuit-board mounting. This feature makes these devices
suitable for industrial applications critical to vibration. Their
construction permits operation up to 125ºC (ambient)
without derating.
The RA Series are available in voltage ratings up to 275V
VM(AC)RMS, and energy levels up to 140J. These varistors are
used in automotive, motor-control, telecommunication, and
military applications.
Agency Approvals
Agency
Agency Approval
Agency File Number
UL1449
E320116
Additional Information
See RA Series Device Ratings and Specifications Table for
part number and brand information.
Features
•Lead–free/RoHS
compliant parts
available (add
suffix "x2749")
• Wide operating
voltage range:
VM(AC)RMS: 4 – 275V
VM(DC): 5.5 – 369V
• Low profile outline with
precise seating plane
• High energy absorption
capability W TM
up to 140J
• No derating up to
125ºC ambient
Datasheet
Resources
Samples
• 3 model sizes available
A8, RA16, and RA22
• In-line leads
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
RA8 Series
RA16 Series RA22 Series
Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
4 to 275
10 to 275
4 to 275
V
5.5 to 369
14 to 369
18 to 369
V
100 to 1200
1000 to 4500
2000 to 6500
A
Transients:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2)
Single Pulse Energy Range (Note 1)
0.4 to 23
3.5 to 75
70 to 160
J
Operating Ambient Temperature Range (TA)
For 10/1000µs Current Wave (WTM)
-55 to +125
-55 to +125
-55 to +125
ºC
Storage Temperature Range (TSTG)
-55 to +150
-55 to +150
-55 to +150
ºC
<0.01
<0.01
<0.01
%/ºC
5000
5000
5000
V
1000
1000
1000
MΩ
Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Delectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
COATING Insulation Resistance
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.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15
Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
RA Series Ratings & Specifications
Maximum Rating (125°C)
Continuous
Part
Number
† RA8 Series
V8RA8
V12RA8
V18RA8
Brand
Peak
Current
(8/20µs)
Varistor Voltage at 1mA
DC Test Current
Max Clamping
Volt VC
(8/20µs)
Typical
Capacitance
VRMS
VDC
Energy
(10/1000µs)
VM(AC)
VM(DC)
WTM
ITM
Min
VN(DC)
Max
VC
Ip
f = 1MHz
(mm)
(V)
(V)
(J)
(A)
(V)
(V)
(V)
(V)
(A)
(pF)
8R
12R
18R
4
6
10
5.5
8
14
18
(Note 3)
22
26
31
38
45
56
66
81
102
127
153
175
180
200
225
300
330
369
0.4
0.6
0.8
10
(Note 2)
1.0
1.2
1.5
1.8
2.3
3.0
4.0
5.0
6.0
8.0
10.0
11.0
12.0
13.0
15.0
20.0
21.0
23.0
150
150
250
6
9
16.2
8.6
12.5
18
11.2
16
19.8
22
34
42
5
5
5
3000
2500
2000
V22RA8
22R
14
V27RA8
V33RA8
V39RA8
V47RA8
V56RA8
V68RA8
V82RA8
V100RA8
V120RA8
V150RA8
V180RA8
V200RA8
V220RA8
V240RA8
V270RA8
V360RA8
V390RA8
V430RA8
27R
33R
39R
47R
56R
68R
82R
100R
120R
150R
180R
200R
220R
240R
270R
360R
390R
430R
17
20
25
30
35
40
50
60
75
95
115
130
140
150
175
230
250
275
† RA16 Series
V18RA16
V22RA16
V27RA16
V33RA16
V39RA16
V47RA16
V56RA16
V68RA16
V82RA16
V100RA16
V120RA16
V150RA16
V180RA16
V200RA16
† V220RA16
† V240RA16
† V270RA16
† V360RA16
† V390RA16
† V430RA16
18R16
22R16
27R16
33R16
39R16
47R16
56R16
68R16
82R16
100R16
120R16
150R16
180R16
200R16
220R16
240R16
270R16
360R16
390R16
430R16
10
14
17
20
25
30
35
40
50
60
75
95
115
130
140
150
175
230
250
275
†
†
†
†
†
†
Specifications (25°C)
Transient
14
3.5
18 (Note 3) 50 (Note 2)
22
5.0
26
6.0
31
7.2
8.8
38
45
10.0
56
13.0
66
15.0
81
20.0
102
22.0
127
30.0
153
35.0
175
38.0
180
42.0
200
45.0
225
55.0
300
70.0
330
72.0
369
75.0
250
19.8
22
24.2
47
5
1600
250
250
250
250
250
250
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
24.3
29.7
35.1
42.3
50.4
61.2
73.8
90
108
135
162
184.5
198
216
243
324
351
387
27
33
39
47
56
68
82
100
120
150
180
205
220
240
270
360
390
430
29.7
36.3
42.9
51.7
61.6
74.8
90.2
110
132
165
198
225.5
242
264
297
396
429
473
57
68
79
92
107
127
135
165
205
250
295
340
360
395
455
595
650
710
5
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
1300
1100
900
800
700
600
500
400
300
250
200
180
160
150
130
100
90
80
1000
1000
1000
1000
1000
1000
1000
1000
4500
4500
4500
4500
4500
4500
4500
4500
4500
4500
4500
4500
16.2
19.8
24.3
29.7
35.1
42.3
50.4
61.2
73.8
90
108
135
162
184.5
198
216
243
324
351
387
18
22
27
33
39
47
56
68
82
100
120
150
180
205
220
240
270
360
390
430
19.8
24.2
29.7
36.3
42.9
51.7
61.6
74.8
90.2
110
132
165
198
225.5
242
264
297
396
429
473
39
43
53
64
76
89
103
123
145
175
205
255
300
340
360
395
455
595
650
710
10
10
10
10
10
10
10
10
50
50
50
50
50
50
50
50
50
50
50
50
11000
9000
7000
6000
5000
4500
3900
3300
2500
2000
1700
1400
1100
1000
900
800
700
550
500
450
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15
Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
RA Series Ratings & Specifications
Maximum Rating (125°C)
Continuous
Brand
Part
Number
Specifications (25°C)
Transient
VRMS
VDC
Energy
(10/1000µs)
Peak
Current
(8/20µs)
Varistor Voltage at 1mA
DC Test Current
Max Clamping
Volt VC
(8/20µs)
Typical
Capacitance
VM(AC)
VM(DC)
WTM
ITM
Min
VN(DC)
Max
VC
Ip
f = 1MHz
(mm)
(V)
(V)
(J)
(A)
(V)
(V)
(V)
(V)
(A)
(pF)
V24RA22
24R22
14
18
(Note 3)
100.0
(Note 2)
2000
21.6
24
26.4
43
20
18000
V36RA22
36R22
23
31
2000
32.4
36
39.6
63
20
12000
V200RA22
V240RA22
V270RA22
V390RA22
V430RA22
200R22
240R22
270R22
390R22
430R22
130
150
175
250
275
175
200
225
330
369
6500
6500
6500
6500
6500
184.5
216
243
351
387
205
240
270
390
430
225.5
264
297
429
473
340
395
455
650
710
100
100
100
100
100
1900
1600
1400
1000
900
† RA22 Series
†
†
†
†
†
NOTES:
160.0
(Note 2)
70.0
80.0
90.0
130.0
140.0
1. Average power dissipation of transients not to exceed 0.25W for RA8 Series, 0.60W for RA16 Series, or 1.0W for RA22 Series.
2.Energy ratings for impulse duration of 30ms minimum to one half of peak current value.
3.Also rated to withstand 24V for 5 minutes.
4.10mA DC Test Current.
† Under UL File No. E320116 as a recognized component. CSA approved File No. 91788.
Peak Pulse Current Test Waveform
PERCENT OF PEAK VALUE
Power Dissipation Ratings
PERCENT OF RATED VALUE
100
90
80
70
60
50
40
30
20
10
0
-55
Figure 1
50
60
70
80
90
100
110
120
130
140 150
100
50
10
O1
Should
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 above. 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.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15
T
T1
AMBIENT TEMPERATURE ( oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
transientsCURVE
occur in rapid succession, the average
O1 = Virtual
T = Time F
T1 = Virtual
T2 = Virtual
Example: For
8 s = T1 = Vi
20 s = T2 = Vi
90
Figure 2
TIME
T2
FIGURE 2. PEAK PULSE CURRENT TEST W
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
2,000
100
Metal-Oxide Varistors
90(MOVs)
200
100
90
80 V68RA8
70
100V56RA8
100
6090V47RA8
V68RA8
90
5080V39RA8
70 V56RA8
80
4060V33RA8
V47RA8
70
50V27RA8
V39RA8
30 V22RA860
40 V33RA8
50
V18RA8
V27RA8
2030 V22RA8
40
V12RA8
V18RA8
V12RA8
30
V8RA8
10
-3
V8RA8
10 -2
10
20
-3
10 -2
10
V24RA22
10 -1
10 0
10 1
10 2
-1
-2
10
10 0-1
10 10
AMPERES
(A)
10
10
10PEAK
10 3
2
3
101
10
PEAK
PEAK AMPERES
(A) AMPERES (A)
10 2
10
10 3
FIGURE 3.
CLAMPING
VOLTAGE FOR
V8RA8 - V68RA8
FIGURE
7. CLAMPING
VOLTAGE
FOR V24RA22 - V36RA22
V430RA22
V390RA22
INDEFINITE
200
0.5
10 -2
1
2
10
10 2
50
10 3
20
10
5
2
INDEFINITE
1
V270RA22
V240RA22
V200RA22
0.5
100
1,000
-1
0
10
10DURATION
10 1 (μs) 10 2
IMPULSE
PEAK AMPERES (A)
10 3
10,000
10 4
0.2
20
100
FIGURE 10. SURGE C
V18RA8
500
V180RA8 1
V180RA8
200
200
V150RA8
V150RA8
V120RA8
V120RA8
0.5
V100RA8
V100RA8
100
100
-3
-2
10
10
-2
0.2
10 -3
10
20
10
SURGE CURRENT (A)
V18RA8 - V68RA8
10 4 5
10 6
10
10 2
50
10 3
20
10
5
2
INDEFINITE
1
0.5
V82RA8
V82RA8
10 0
2
100
INDEFINITE
10 -1
1
200
SURGE CURRENT (A)
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
300
1
V8RA8 - V12RA8
1
VOLTAGE
4,000 MAXIMUM CLAMPING
100 SIZECLAMPING
MAXIMUM
MODEL
5 x 8mm VOLTAGE
2
10 4 5
SIZE
5 x RATING
8mm
TO 430V
3,000 82MODEL
N(DC)
10 6
o
o
RATING
82
TO
430V
N(DC)
TA = -55
C TO
125 oC
10
50
10
o
2,000
TA = -55 C TO 125 C
2,000
V240RA8
10 2
V240RA8
V220RA8
20
V220RA8
V200RA8
3
V430RA8
1,000
V200RA8
10
V430RA8
1,000
900
900
10 V390RA8
V390RA8
800
800
700
700
600
5
600
500
500
V360RA8
V360RA8
400
400
V270RA8
V270RA8
2
300
300
3,000
Figure 4
10
1,000
900
800
5
700
600
500
2
400
FIGURE
SURGE CURRENT
CURVES- V430RA22
FOR
FIGURE
8. 9.
CLAMPING
VOLTAGE RATING
FOR V200RA22
V8RA8 - V12RA8
200
4,000
10 3
500
100
V18RA8 - V68RA8
Pulse Rating Curves
1
FIGURE 8. CLAMPING
200
10 2
20
Figure 5
V82RA8 - V430RA8
10 -2
V8RA8 - V12RA8
1
4
2
MAXIMUM CLAMPING
VOLTAGE
10
200 TO 430VN(DC) RATING
10 5 6
10T = -55o C TO 125 o C
10
A
4,000
100
3,000
50
2,000
0.2
10020
10 -3
10 4
FIGURE 3. CLAMPING VOLTAGE FOR V8RA8 - V68RA8
200
10 1
10 2
10 -1 PEAK
10 0AMPERES
10 1 (A) 10 2
100
PEAK AMPERES (A)
10 3
10 4
10 3
10 4
1,000
(μs)
IMPULSE
DURATION
FIGURE 4. CLAMPING VOLTAGE FOR
V82RA8
- V430RA8
FIGURE 4. CLAMPING VOLTAGE FOR V82RA8 - V430RA8
FIGURE 9. SURGE CURRENT RATING CURVES FOR
V8RA8 - V12RA8
0.2
10,000
20
100
Figure 6
1,000
IMPULSE DURATION (μs)
10,000
FIGURE 10. SURGE CURRENT RATING CURVES FOR
V18RA8 - V68RA8
V82RA8 - V430RA8
2,000
SURGE CURRENT (A)
100
V82RA8 - V430RA8
10 3
10 4
10 5
10 6
10
10 2
50
20
10
5
INDEFINITE
2
1
20
100
1,000
10,000
CURRENT (A)
1
2,000
1,000
10
500
200
100
2,000
V82RA16 - V430RA16
10 2 3
10
10 4
10 5
10 6
10
200 10 2
100
50
20
10
INDEFIN
5
1
20
IMPULSE DURATION (μs)
FIGURE 11. SURGE CURRENT RATING CURVES FOR
V82RA8 - V430RA8
2
1
2
Figure 7
5,000
2
500
2
500
200
1,000
1
1,000
SURGE CURRENT (A)
10
10 -3
V36RA22
300
100
10 -3
FIGURE
6. CLAMPING VOLTAGE FOR V82RA16 - V430RA16
200
24 TO 36VN(DC) RATING
TA = -55o C TO 125 o C
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
200
1,000
900
800
700
600
500
400
Pulse Rating Curves
FIGURE 5. CLAMPING VOLTAGE FOR V18RA16 - V68RA16
300
V24RA22
20 V180RA16
200 -3
10
10 -1
10 0
10 1
10 2
10 3
10 4
10 -2
V150RA16
PEAK AMPERES (A)
V120RA16
V100RA16
Repetitive
Surge Capability for 8mm
Parts
V82RA16
FIGURE
7. CLAMPING VOLTAGE FOR V24RA22 - V36RA22
100
-3
-2
-1
0
1
10
10
10
10
10 2
10 3
10
10 4
V8RA8 - V12RA8
PEAK AMPERES (A)
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA =300
-55o C TO
125 o C
MAXIMUM
CLAMPING VOLTAGE
200
Figure 3
10 3
TA = -55o C TO 125 o C
400
20
10 2
V390RA16
SURGE CURRENT (A)
100
90
80
70
60
50
40
MAXIMUM
PEAK
VOLTS (V)(A)
SURGE
CURRENT
600
V240RA16
V220RA8
V200RA8
Low Profile / Application Specific Varistors
> RA Series
V430RA16
V36RA22
200
V68RA16
V56RA16
V47RA16
V39RA16
V33RA16
V27RA16
30 V22RA16
V18RA16
Maximum Clamping
Voltage for 8mm Parts
20
-3
600
10 CLAMPING
10 -2
10 -1
10 0
10 1
MAXIMUM
VOLTAGE
V8RA8 - V68RA8
500
PEAK AMPERES (A)
8 TO 68VN(DC) RATING
300
500
80
70
1,000
60
900
800
50
700
600
40
500
V360RA16
400
30
V270RA16
300
1,000
500
CURRENT (A)
MAXIMUM PEAK VOLTS (V)
300
400
MODEL SIZE 5 x 8mm
82 TO 430VN(DC) RATING
TA = -55o C TO 125 o C
3,000
MAXIMUM PEAK VOLTS (
18 TO 68VN(DC) RATING
TA = -55o C TO 125 o C
PEAK
MAXIMUMMAXIMUM
PEAK VOLTS
(V)VOLTS (
400
2
1
V24RA22 - V36RA
10
10 2
© 2015 Littelfuse, Inc.
3
200
Specifications are 10
subject to change without notice.
4
Revised: 11/04/15
100 10
50
FIGURE 12. SUR
V18R
10 5
10 6
Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
Maximum Clamping Voltage for 16mm Parts
Repetitive Surge Capability for 16mm Parts
10 3
Figure 8
FIGURE 11. SURGE CURRENT RATING CURVES FOR
FIGURE 5. CLAMPING VOLTAGE
V18RA16 - V68RA16
V82RA8 -FOR
V430RA8
10 -3
Figure 10
200
100
50
20
10
INDEFINITE
5
3,000
2,000
100
90
80
70
1,000
900
60
800
700
50
600
40
500
V360RA16
400
30 V270RA16
300
V24RA22
2
1
10
10 2
10 3
10 4
10 5
20
10
INDEFINITE
MAXIMUM PEAK VOLTS (V)
10
500
MAXIMUM CLAMPING VOLTAGE
2,000
24 TO 36VN(DC) RATING
V82RA16 - V430RA16
TA = -55o C TO 125 o C
1,000
MAXIMUM CLAMPING VOLTAGE
MODEL
10 2 3 SIZE 5 x 8mm
500
8210
TO 430VN(DC) RATING
4 o
TA =10-55
C TO 125 o C
5
10
200
10 6
V240RA16
100
V220RA8
V200RA8
V430RA16
50
V390RA16
V36RA22
SURGE CURRENT (A)
SURGE CURRENT (A)
1,000
200
4,000
2
MAXIMUM
PEAK(V)
VOLTS (V)
MAXIMUM
PEAK VOLTS
2,000
1
5
Pulse
Figure
9
10
INDEFINITE
5
V82RA16
1,0002
IMPULSE
DURATION
10 -1
10 0
10 1
10 2
10 3(μs) 10 4
1
PEAK AMPERES (A)
20
10,000
100
1,000
IMPULSE DURATION (μs)
FIGURE 11. SURGE CURRENT RATING CUR
V82RA8 - V430RA8
10,000
4,000
V82RA16 - V430RA16
MAXIMUM CLAMPING VOLTAGE
3,000
200 TO 430VN(DC) RATING
V24RA22 - V36RA22
TA = -55o C TO 125 o C
2,000
5,000
1
10 6
2,000 2
V430RA22
V390RA22
1,000
1,000 10
900
800
500
700
600
500
200
400
100
300
50
V270RA22
200
V240RA22
20
V200RA22
INDEFINITE
10
200
4,000
100
3,000
SURGE
CURRENT
(A)
MAXIMUM
PEAK
VOLTS (V)
50
2,000
2
10 3
20
1,000
10
900
800
5
700
600
500
400
2
300
1
1
MAXIMUM CLAMPING
VOLTAGE
2
10 4 5
200 TO 430VN(DC) RATING
10 6
10TA = -55o C TO 125 o C
10
5,000
1
2
V20
10
2,000
V82RA16 - V430RA16
1,000
500
10 2 3
10
10 4 200
5
10
6
10100
50
20
10
INDEFINITE
5
INDEFINITE
200
0.5
10 -2
100
SURGE CURRENT (A)
100
50
20
2
10
10 4 5
10 6
10
10 2
10 3
© 2015 Littelfuse,
10Inc.
Specifications are subject to change without notice.
Revised: 11/04/155
2
INDEFINITE
V18RA8 - V68RA8
10 2
50
10 3
20
10
5
2
INDEFINITE
0.5
1,000
10 -1
10 0
10 1
10 2
IMPULSE
PEAKDURATION
AMPERES(μs)
(A)
1
10
10 4 5
10 6
10
1
V270RA22
V240RA22
V200RA22
10 3
10,0004
10
500
200
2
100
FIGURE
8. 9.CLAMPING
VOLTAGERATING
FOR V200RA22
FIGURE
SURGE CURRENT
CURVES- V430RA22
FOR
V8RA8 - V12RA8
V8RA8 - V12RA8
1
200
V430RA22
V390RA22
10 3
FIGURE 13. SURGE CURRENT RATING CURVES FOR
V82RA16 - V430RA16
500
V8RA8 - V12RA8
10 2
0.2
100
20 -3
10
10 4
A)
V24RA22 - V36RA22
Rating Curves
FIGURE 6. CLAMPING VOLTAGE FOR V82RA16 - V430RA16
SURGE CURRENT (A)
V18RA16 - V68RA16
10 2
20
2
2,000
10
10 3 2
10 4
1,000
10 51
1
500
1
200
1
100
1
50
1
20
10
2
20 V180RA16
200
23
100
-3
-2
-1
0
1
2
4
5
10V150RA16
10 10,000
10
10
1020
10
10
110 4
100
1,000
100
1,000 10
10 -3
10 010,00010 1
10 2
10 3
10 -2 5 10 -1
V120RA16
20
100
1,00
PEAK AMPERES (A)
PEAK
AMPERES
(A)
(μs)
IMPULSE
DURATION
IMPULSE DURATION
V100RA16 (μs)
2 (
V82RA16
2
IMPULSE DURATION
100
20
20 VOLTAGE 100
1,000
10,000
FIGURE 7. CLAMPING VOLTAGE FOR V24RA22 - V36RA22
FIGURE 8. CLAMPING
FOR V200RA22 - V430RA22
3
FIGURE
13.10SURGE
CURRENT
RATING
CURVES
FOR 10 0
FIGURE
14.10 4SURGE CURRENT RATING CURVES FOR
10 2
10 -3
10 -1
10 1
10 2
10 3
10 -2
FIGURE 15.
IMPULSE DURATION
(μs) SURGE CURRENT RATING CURVES F
V82RA16 - V430RA16
V24RA22 - V36RA22
PEAK AMPERES (A)
Figure 11
2
20
10 1
(A)
10 3
10 4
10 5
10 6
50
FIGURE 12. SURGE CURRENT RATING CURVES FOR
FIGURE 6. CLAMPING VOLTAGE
FOR
V82RA16 - V430RA16
V18RA16
- V68RA16
V82RA16 -300
V430RA16
5,000
10 -2
V8
SURGE CURRENT (A)
V68RA16 20
V56RA16
V47RA16 10
V39RA16 5 INDEFINITE
V33RA16
V27RA16
30 V22RA16 2
V18RA16 1
20
100
1,000
20
1
10 -3
10 -2
10 -1
10 0IMPULSE
10 DURATION
10 2 (μs)
PEAK AMPERES (A)
100
V430RA16
1,000
900
50V390RA16
800
700
600
20
500
V360RA16
400
V270RA16 10
300
INDEFINITE
5
V180RA16
200
V150RA16 2
V120RA16
V100RA16 1
20
100
10,000 100
SURGE CURRENT (A)
50
200 10 2
SURGE CURRENT (A)
100
90
80
70
60
50
40
2,000
10 3
10 4
10 5
10 6
V18RA16 - V68RA16
10 3
10 4 2,000
5
10
1
6
10 1,000
V240RA16
2
V220RA8
500
V200RA8
10
200
10 2
100
SURGE CURRENT (A)
200
MAXIMUM
1,000 CLAMPING VOLTAGE
1
MODEL SIZE25 x 8mm
82 TO 430V
500 N(DC) RATING
10125 o C
TA = -55o C TO
3,000
V82RA8 - V430RA8
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
300
4,000
2,000CLAMPING VOLTAGE
MAXIMUM
1 RATING
18 TO 68VN(DC)
1,000
TA = -55o C TO 125 o C
2
500
10
200
10 2
100
SURGE CURRENT (A)
600
500
400
V18RA16 - V68RA16
SURGE CURRENT (A)
V18RA16 - V68RA16
V18RA8 - V68RA8
0.2
20
100
1,000
IMPULSE DURATION (μs)
FIGURE 10. SURGE CURRENT RATING CURVES FOR
V18RA8 - V68RA8
10,000
FIGURE
TA = -55o C TO 125 o C
500
2
2,000
82 TO 430VN(DC) RATING
TA = -55o C TO 125 o C
10 3
10 4
10 5
10 6
V430RA16
V390RA16
10
2
MAXIMUM PEAK VOLTS (V)
200
Metal-Oxide
Varistors (MOVs)
10
200
SURGE CURRENT (A)
MAXIMUM PEAK VOLTS (V)
300
10
10 5
10 6
10
V240RA16
V220RA8
V200RA8
SURGE CURRENT (A)
400
200 10 2
100
1,000 Specific Varistors > RA Series
50
Low Profile
/ Application
900
50
100
90
80
70
60
50
40
V68RA16
V56RA16
V47RA16
V39RA16
V33RA16
V27RA16
30 V22RA16
V18RA16
Maximum
Clamping Voltage for 22mm
20
-3
10
10 -2
10 -1
10 0
10 1
PEAK AMPERES (A)
V24RA22 - V36RA22
100
20
10
5
INDEFINITE
800
700
600
500
V360RA16
400
V270RA16
300
V180RA16
V150RA16
V120RA16
1
V100RA16 1,000
20
100
10,000
V82RA16
Parts
100Repetitive Surge Capability for
IMPULSE-3DURATION
(μs) -1
2
3
-2
0
10
10
10
10
10
10 1
10 2
10
FIGURE 11. SURGE CURRENT
RATING
CURVESPEAK
FORAMPERES (A)
V24RA22
- V36RA22
20
10
5
200
2
FIGURE 5. CLAMPING VOLTAGE FOR V18RA16 - V68RA16
INDEFINITE
2
1
20
22mm Parts
10 3
10 4
100
1,000
IMPULSE DURATION (μs)
FIGURE 12. SURGE CURRENT RATING CURVES FOR
V82RA8 -FIGURE
V430RA8
V18RA16 - V68RA16
6. CLAMPING VOLTAGE FOR V82RA16 - V430RA16
4,000
5,000CLAMPING VOLTAGE
2,000 CLAMPING VOLTAGE
MAXIMUM
MAXIMUM
1
1
3,000
2
V82RA16 - V430RA16
V24RA22 - V36RA22
200 TO 430VN(DC)
RATING
24 TO 36VN(DC) RATING
2
1,000
o
o
2,000
TA = -55o C TO10125 o C
200
TA = -55
C TO 125 C
2,000
1,000
10 2 3
4,000
1,000 10
500
10 6
1
10 2
1
V18RA16
MAXIMUM
CLAMPING
VOLTAGE
10 2- V68RA16
V82RA8
- V430RA8
4
10 3
MODEL500
SIZE 5 x 8mm
500 10 5
4
3,000
10
3
10
200 10V430RA22
10 6
82 TO 430VN(DC) RATING
2
5
10
V390RA22
1,000 10 6
TA = -55o C TO 125 o C
100
10
900
200
200 10 2
4
2,000
10 3
10
10
100
90
800
10 4
80
700
V240RA16
5 100
10 5
10
100
600
50
10 2
70
V220RA8
10 650
500
60
V200RA8 50
V36RA22
V430RA16
1,000
400
900
V390RA16
50
20
800
20
300
700
40
20
10
600
INDEFINITE
INDEFINITE
10
V270RA22
V24RA22
500
200
V240RA22
30 V360RA16
10
5
5
400
V200RA22
INDEFINITE
V270RA16
5
INDEFINITE
300
2
2
20
20
100
1,000
10,000
1,000
10,000 100 -3
-3
V180RA16
10 0 100 10 1
10 2
10 3
10 4
10 -2 20 10 -1
10
10 -1
10 0
10 1
10 2
10 3
10 -2
10 4
20010
2
IMPULSE
IMPULSE
V150RA16
PEAK AMPERES
(A) DURATION (μs)
PEAK AMPERES
(A) DURATION (μs)
Figure 12 V120RA16
1
Figure
14
20 CURVES FOR
100
1,000
10,000
FIGURE 13.VOLTAGE
SURGE
RATING
FIGURE 14.
SURGE
CURRENT
RATING
CURVES FOR
FIGURE
7.1,000
CLAMPING
FORV82RA16
V24RA22
- V36RA22
FIGURE 8. CLAMPING
VOLTAGE
FOR
V200RA22
- V430RA22
0
100
10,000CURRENT
V100RA16
IMPULSE DURATION (μs)
V82RA16 - V430RA16
V24RA22 - V36RA22
IMPULSE 100
DURATION (μs)
2
3
-3
-2
-1
0
1
2
3
4
10
10
10
10
10
10
10
10
10
RE 11. SURGE
CURRENT- V430RA22
RATING CURVES FORPEAK AMPERES (A) FIGURE 12. SURGE CURRENTV200RA22
RATING CURVES
FOR
- V430RA22
V200RA22
V82RA8 - V430RA8
V18RA16 - V68RA16
500
200
68RA16
FIGURE
6. CLAMPING VOLTAGE FOR V82RA16 - V430RA16
V8RA8
V12RA8
V18RA8 - V68RA8
1
1
100
2
10 4 5
4,000
200
10 4 5
10,000 2
2,000
10 6
MAXIMUM CLAMPING
VOLTAGE
10 6
1
1
RA16 - V430RA16
V200RA22 - V430RA22
3,000
V24RA22 - V36RA22
2 10
10200 TO 2
50
5,000
430VN(DC) RATING 10
10
100
10
1,000
o C TO 125 o C
T2A = -5510
2
10 2 3
2,000
10
2,000 10
10
500
10 6
50
20
10 4
10 2
1,000
10 3
10 3
10 5
20
200 10 3
10 6
500
10
V430RA22
V390RA22
1,000
10
900
5
100 10 4
200
800
700
5
100
5
50 10
600
50
500
2
2
400
INDEFINITE
20
20
1
1
INDEFINITE
300
INDEFINITE
10
10
INDEFINITE
0.5
V270RA22
0.5
5
200
5
V240RA22
V200RA22
2
0.2
0.2
2
20
100
1,000
10,000
20
100
1,000
10,000
1
20
100
1,000
10,000
10,000
100
3
4
(μs)
IMPULSE
DURATION
(μs)
20 IMPULSE DURATION
100
1,000
10,000
0
10
10
10 -3
10 -1
10IMPULSE
10 1DURATION
10 2 (μs)10 3
10 -2
10 4
IMPULSE DURATION (μs)
PEAK AMPERES (A)
Figure 15
2,000
FIGURE 8. CLAMPING
VOLTAGE FOR V200RA22 - V430RA22
V8RA8 - V12RA8
V24RA22 - V36RA22
SURGE CURRENT (A)
FIGURE 10. SURGE CURRENT RATING CURVES FOR
FIGURE V18RA8
15. SURGE
CURRENT RATING CURVES FOR V200RA22 - V430RA22
- V68RA8
SURGE CURRENT (A)
10 3
20
10
5
2
INDEFINITE
1
0.5
10,000
0.2
20
100
1,000
IMPULSE DURATION (μs)
100
50
20
INDEFIN
10
20
FIGURE 15. SURGE CUR
10 2
50
200
2
10 6
10
500
1
NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than
±10% could500
result. This type of shift, which normally results in a decrease of VN(DC), may
V18RA8but
- V68RA8
result in the device not
specifications,
it does not prevent
1 meeting the original published
4
200 continuing to function,
the device from
and to 10
provide
2
10 5 ample protection.
100
1,000
5
SURGE CURRENT (A)
SURGE CURRENT (A)
SURGE CURRENT (A)
MAXIMUMSURGE
PEAK VOLTS
(V) (A)
CURRENT
V12RA8
9. SURGE CURRENT RATING CURVES FOR
Figure FIGURE
13 FIGURE
14. SURGE CURRENT RATING CURVES FOR
1
5,000
SURGE CURRENT (A)
MAXIMUM PEAK VOLTS (V)
SURGE CURRENT (A)
10,000
Pulse Rating Curves
RVES
FOR
36RA22
OR
SURGE CURRENT (A)
MAXIMUM
PEAK
MAXIMUM PEAK
VOLTS
(V) VOLTS (V)
300
10,000
FIGURE 10. SURGE CURRENT RATING CURVES FOR
V18RA8 - V68RA8
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15
Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
Wave Solder Profile
Pre Heat
Pb – Free assembly
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (min to max) (ts)
60 – 180 secs
Average ramp–up rate (Liquidus Temp (TL)
to peak
5°C/second max
TS(max) to TL - Ramp-up Rate
5°C/second max
Reflow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
Peak Temperature (TP)
250+0/-5°C
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate
5°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
260°C
Lead–free Profile
300
Maximum Wave 260C
250
TEMPERATURE (ºC)
Reflow Condition
200
150
100
50
0
0
0.5
1
Figure 16
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
Non Lead–free Profile
300
Maximum Wave 240C
TEMPERATURE (ºC)
250
200
150
100
50
0
0
0.5
1
Figure 17
1.5
2
2.5
3
3.5
4
TIME(MINUTES)
Environmental Specifications
Physical Specifications
Operating/Storage
Temperature
-55°C to +125°C / -55°C to +150°C
Lead Material
Tin–Coated
Humidity Aging
+85°C, 85% RH, 1000 hours
+/-10% Voltage
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208
Thermal Shock
+85°C to -40°C 10 times
+/-10% Voltage
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V–0 requirements.
Solvent Resistance
MIL–STD–202, Method 215
Device Labeling
Moisture Sensitivity
Level 1, J-STD-020
Marked with LF, voltage, amperage rating,
and date code.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15
Metal-Oxide Varistors (MOVs)
Low Profile / Application Specific Varistors > RA Series
Product Dimensions (mm)
D MAX
Y
n
MIN
A MAX
SEATING
PLANE
5.0 MIN
(0.197 MIN)
X
Øb
±0.05
( 0.002)
E
MAX
Z MIN
0.5 MAX
OFFSET
(0.020 MAX)
e
1.0
( 0.039)
SYMBOL
RA8
Series
RA16
Series
RA22
Series
A (max.)
8.85
(0.348)
15.1
(0.594)
19.1
(0.752)
D (max.)
11.45
(0.450)
19.7
(0.776)
25.5
(1.004)
e±1
5
(0.197)
7.5
(0.295)
7.5
(0.295)
E (max.)
5.2
(0.205)
6.3
(0.248)
6.3
(0.248)
n (max.)
0.7
(0.027)
0.7
(0.027)
0.7
(0.027)
Øb ± 0.05
0.635
(0.025)
0.81
(0.032)
0.81
(0.032)
Weight
(typical)
1 Gram
3.4 Grams
4.4 Grams
X
2.2
(0.087)
2.2
(0.087)
4.4
(0.173)
Y (Typ.)
3.1 -/+ 0.5
(0.122 -/+
0.02)
6 -/+ 1
(0.236 -/+
0.04)
8.9 -/+ 1
(0.35 -/+ 0.04)
Z (min.)
0.4
(0.015)
0.8
(0.031)
0.8
(0.031)
NOTES: Dimensions are in mm, with dimensions in inches in parentheses.
Inches for reference only.
Part Numbering System
The RA Series is supplied in bulk pack.
V 200 RA 16 X2749
Littelfuse
Varistor
Nominal
Varistor Voltage
OPTIONAL SUFFIX:
X2749: Lead-Free and
RoHS Compliant Option
Device Size
Series Designator
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15