Metal Oxide Varistors
Features
l
Wide operating voltage (V1mA) range from 18V to 820V
l
Fast responding to transient over-voltage.
l
Large absorbing transient energy capability.
l
Low clamping ratio and no following-on current.
07D Series
General Information
l
Surge protection in consumer electronics
l
Surge protection in industrial electronics
l
Relay and electromagnetic valve surge absorption
l
Transistor, diode, IC, thyristor or triac semiconductor
protection
l
Surge protection in electronic home appliances, gas and
petroleum appliances
General Characteristics
l
Body: Nickel Plated
l
Devices with No Leads: Nickel Plated
l
Operating Temperature: -40ºC to +85ºC
l
Storage Temperature: -40
ºC
to +125ºC
Part Number Code
0
7
D
4
7
1
K
J
Element Diameter
Type
D:Disk
Nominal Varistor Voltage
471=47*10
1
V
Varistor Voltage
Tolerance
K =
±10
%
Surge Series
No Suffix:Standard
Type
J:High Surge Type
Specifications are subject to change without notice.
Please refer to http://
www.ruilon.com.cn
for current information.
Revised: 2018-08-09
Page:1
Metal Oxide Varistors
Electrical Characteristics
Type Number
Varistor
Voltage
V
1mA
(V)
15~22
20~26
24~30
30~36
35~43
42~52
50~62
61~75
74~90
90~110
108~132
135~165
162~198
180~220
198~242
216~264
243~297
270~330
297~363
324~396
351~429
387~473
423~517
459~561
504~616
558~682
612~748
675~825
702~858
738~902
Max. Allowable
Voltage
V
AC
(V) V
DC
(V)
11
14
17
20
25
30
35
40
50
60
75
95
115
130
140
150
175
195
210
230
250
275
300
320
350
385
420
460
485
510
14
18
22
26
31
38
45
56
65
85
100
125
150
170
180
200
225
250
275
300
320
350
385
418
460
505
560
615
640
670
Max. Energy
(2ms)
(J)
(J)
Standard High Surge
0.8
0.9
1.1
1.4
1.6
2.0
2.4
2.9
3.4
4.2
5.0
6.3
7.6
8.4
9.2
10.1
11.3
12.6
13.9
15.1
16.4
18.1
19.7
21.4
23.5
26.0
28.6
31.5
32.8
34.4
/
/
/
/
/
/
/
/
4.3
5.3
6.3
7.9
9.5
10.5
11.6
12.6
14.2
15.8
17.3
18.9
20.5
22.6
24.7
26.8
29.4
32.6
35.7
39.4
41.0
43.1
Max. Clamping
Voltage
（8/20μs）
I
P
(A)
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
V
C
(V)
38
43
53
65
77
93
110
135
135
165
200
250
300
340
360
395
455
505
550
595
650
710
775
842
920
1025
1120
1240
1290
1355
Withstanding Surge
Current（8/20μs）
I(A)
I(A)
Standard High Surge
250
250
250
250
250
250
250
250
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
/
/
/
/
/
/
/
/
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
1750
07D Series
Typical
Rated
Capacitance
Power
(Reference)
(W)
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
@1KHz(pf)
3500
2800
2200
1800
1450
1150
1050
970
930
860
670
490
330
240
190
165
150
135
130
125
105
100
90
80
75
70
65
61
54
48
Standard
07D180K
07D220K
07D270K
07D330K
07D390K
07D470K
07D560K
07D680K
07D820K
07D101K
07D121K
07D151K
07D181K
07D201K
07D221K
07D241K
07D271K
07D301K
07D331K
07D361K
07D391K
07D431K
07D471K
07D511K
07D561K
07D621K
07D681K
07D751K
07D781K
07D821K
High Surge
/
/
/
/
/
/
/
/
07D820KJ
07D101KJ
07D121KJ
07D151KJ
07D181KJ
07D201KJ
07D221KJ
07D241KJ
07D271KJ
07D301KJ
07D331KJ
07D361KJ
07D391KJ
07D431KJ
07D471KJ
07D511KJ
07D561KJ
07D621KJ
07D681KJ
07D751KJ
07D781KJ
07D821KJ
Note: The energy (10/1000μs) is about 1.4 times of energy(2ms)
Specifications are subject to change without notice.
Please refer to http://
www.ruilon.com.cn
for current information.
Revised: 2018-08-09
Page:2
Metal Oxide Varistors
Electrical Ratings
Items
Varistor Voltage
Maximum Allowable
Voltage
Test Condition/Description
The voltage between two terminals with the specified measuring current 1mA.DC applied is called
Vb.
The recommended maximum sine wave voltage (RMS) or the Maximum DC voltage can be
applied continuously.
The maximum voltage between two terminals with the specification standard impulse current.
Applied waveform: 8/20μs
I
1.0
0.9
B
07D Series
Requirement
Maximum Clamping
Voltage
0.5
T
2
To meet the
Specified value
t
0.1
0.0
O
1
C
T
T
1
30% max.
T1=1.25*T=8μs±20%
T2=20μs±20%
Rated Wattage
The maximum average power that can be applied within the specified ambient temperature.
The maximum energy within the varistor voltage change of
±10%
when one impulse of 10/1000μs
or 2ms is applied.
The maximum current within the varistor voltage change of
±10%
with the standard impulse
current (8/20μs) applied one time.
The change of Vb shall be measured after the impulse listed below which is applied 10,000 times
continuously with the interval of ten seconds at room temperature.
180K to 680K
7Φ series
820K to821K
50A (8/20μs)
15A (8/20μs)
ΔVb
≤ ±10%
Vb
Energy
Withstanding Surge
Current
Surge Life
Specifications are subject to change without notice.
Please refer to http://
www.ruilon.com.cn
for current information.
Revised: 2018-08-09
Page:3
Metal Oxide Varistors
Soldering Recommendation
Wave Lead Free Soldering Recommendation
300
Preheating
Soldering
Maximum Wave 265°C
Cooling
07D Series
Item
Peak Temperature
Dipping Time
Conditions
265ºC
10 seconds (max.)
1 time
250
Temperature(°C)
200
Soldering
150
100
50
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Time(minutes)
Recommendation Reworking Conditions with Soldering Iron
Item
Temperature of Soldering Iron-tip
Soldering Time
Distance from Varistor
Conditions
360ºC (max.)
3 seconds (max.)
2mm (min.)
Dimensions
TABLE 1
Symbol
H(max.)
L(min.)
D(max.)
D1(±1.0)
T(max.)
d(±0.1)
Millimeters
12.0
15.0
9.0
5.0
TABLE 2
0.6
0.024
Inches
0.472
0.591
0.354
0.197
Packaging Quantity: 1000pcs/bag
TABLE 2---T(max.)
Model
180K~390K
470K~680K
820K~151K
181K~271K
Millimeters
5.5
6.0
6.5
7.0
Inches
0.217
0.236
0.256
0.276
Model
331K~391K
431K~561K
621K~781K
821K
Millimeters
7.5
8.0
8.5
9.0
Inches
0.295
0.315
0.335
0.354
Specifications are subject to change without notice.
Please refer to http://
www.ruilon.com.cn
for current information.
Revised: 2018-08-09
Page:4
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