Metal
Oxide
Varistors
20D Series
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Metal Oxide Varistors - 20D Series
Features
•
Wide operating voltage (V
1mA
) range from 18V to 1800V.
•
Fast responding to transient over-voltage.
•
Large absorbing transient energy capability.
•
Low clamping ratio and no following-on current.
General Information
•
Surge protection in consumer electronics
•
Surge protection in industrial electronics
•
Relay and electromagnetic valve surge absorption
•
Transistor, diode, IC, thyristor or triac semiconductor protection
•
Surge protection in electronic home appliances, gas and petroleum appliances
General Characteristics
•
Body: Nickel Plated
•
Devices with No Leads: Nickel Plated
•
Operating Temperature: -40ºC to +85ºC
•
Storage Temperature: -40 ºC to +125ºC
•
Leads: Surface-mount, Axial Devices: Tin Plated
Product Name
2
0
D
4
7
1
K
J
Element Diameter
Type
D: Disk
S: Square
Nominal Varistor Voltage
471=47*10
1
V
Varistor Voltage
Tolerance
K = ±10 %
Surge Series
No Suffix:Standard
Type
J:High Surge Type
H:Super Surge Type
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:1
Metal Oxide Varistors - 20D Series
Electriacl Characteristics
Type Number
Maximum
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
190
210
230
250
275
300
320
350
385
420
460
485
510
550
580
625
680
900
1100
14
18
22
26
31
38
45
56
65
85
100
125
150
170
180
200
225
250
275
300
320
350
385
415
460
505
560
615
640
670
745
780
825
895
1220
1465
Varistor Voltage
Maximum
Clamping
Voltage
I
P
(A) V
C
(V)
20
20
20
20
20
20
20
20
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
36
43
53
65
77
93
100
135
135
165
200
250
300
340
360
395
455
500
550
595
650
710
775
845
925
1025
1120
1240
1290
1355
1500
1570
1650
1815
2475
2970
Withstanding
Surge Current
I(A)
I(A)
Maximum Energy Rated
(10/1000μs)
Power
(J)
(J)
(W)
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Typical
Capacitance
(Reference)
@1KHz(pf)
39000
32000
22000
18000
16000
14000
12000
10000
5800
4800
3800
3000
2600
2400
1800
1500
1400
1350
1300
1250
1180
1100
1050
1000
970
950
900
850
750
700
600
580
500
450
400
220
Standard
20D180K
20D220K
20D270K
20K330K
20D390K
20D470K
20D560K
20D680K
20D820K
20D101K
20D121K
20D151K
20D181K
20D201K
20D221K
20D241K
20D271K
20D301K
20D331K
20D361K
20D391K
20D431K
20D471K
20D511K
20D561K
20D621K
20D681K
20D751K
20D781K
20D821K
20D911K
20D951K
20D102K
20D112K
20D152K
20D182K
High Surge
20D180KJ
20D220KJ
20D270KJ
20K330KJ
20D390KJ
20D470KJ
20D560KJ
20D680KJ
20D820KJ
20D101KJ
20D121KJ
20D151KJ
20D181KJ
20D201KJ
20D221KJ
20D241KJ
20D271KJ
20D301KJ
20D331KJ
20D361KJ
20D391KJ
20D431KJ
20D471KJ
20D511KJ
20D561KJ
20D621KJ
20D681KJ
20D751KJ
20D781KJ
20D821KJ
20D911KJ
20D951KJ
20D102KJ
20D112KJ
20D152KJ
20D182KJ
V
1mA
(V)
18(15~21.6)
22(19.5~26)
27(24~30)
33(29.5~36.5)
39(35~43)
47(42~54)
56(50~62)
68(61~75)
82(74~90)
100(90~110)
120(108~132)
150(135~165)
180(162~198)
200(180~220)
220(198~242)
240(216~264)
270(243~297)
300(270~330)
330(297~363)
360(324~396)
390(351~429)
430(387~473)
470(423~517)
510(459~561)
560(504~616)
620(558~682)
680(612~748)
750(675~825)
780(702~858)
820(738~902)
910(819~1001)
950(855-1045)
1000(900~1100)
1100(990~1210)
1500(1350-1650)
1800(1620~1980)
Standard
High Surge
Standard
High Surge
2000
2000
2000
2000
2000
2000
2000
2000
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
6500
3000
3000
3000
3000
3000
3000
3000
3000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
5.4
6.6
8.1
9.9
11.7
14.1
16.8
20.4
24.6
30.0
36.0
45.0
54.0
60.0
66.0
72.0
81.0
90.0
99.0
108.0
117.0
129.0
141.0
153.0
168.0
186.0
186.0
186.0
187.2
196.8
218.4
228.0
240.0
264.0
359.0
432.0
6.8
8.3
10.1
12.4
14.6
17.6
21.0
25.5
30.8
37.5
45.0
56.3
67.5
75.0
82.5
90.0
101.3
112.5
123.8
135.0
146.3
161.3
176.3
191.3
210.0
232.5
232.5
232.5
234.0
246.0
273.0
285.0
300.0
330.0
449.0
540.0
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:2
Metal Oxide Varistors - 20D Series
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
Requirement
Maximum Clamping
Voltage
To meet the
Specified value
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.
5Φ series
7Φ series
180K to 680K
820K to 751K
180K to 680K
820K to821K
180K to 680K
820K to 112K
180K to 680K
820K to 182K
180K to 680K
820K to 182K
10A (8/20μs)
20A (8/20μs)
25A (8/20μs)
50A (8/20μs)
50A (8/20μs)
100A (8/20μs)
75A (8/20μs)
150A (8/20μs)
100A (8/20μs)
200A (8/20μs)
Energy
Withstanding Surge
Current
Surge Life
10Φ series
14Φ series
20Φ series
∆Vb
±10%
Vb ≤
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:3
Metal Oxide Varistors - 20D Series
Soldering Recommendation
Wave Lead Free Soldering Recommendation
Item
Peak Temperature
Dipping Time
Soldering
Conditions
265ºC
10 seconds (max.)
1 time
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.)
Circuit Protection
System
Revision:DEC-16
Please refer to
http://www.ruilon.com.cn
for current information.
Page:4