Radial Lead Metal Oxide Varistor (MOV)
20D Series
Description
The 20D series radial leaded varistors provides an ideal circuit
protection solution for lower DC voltage applications by
offering higher surge ratings than ever before available in such
small discs.
The maximum peak surge current rating can reach up to 10KA
(8/20 μs pulse) to protect against high peak surges, including
indirect
lightning
strike
interference,
system
switching
transients and abnormal fast transients from the power
source.
Features
Applications
Wide operating voltage (V1mA) range from 18V to 1800V
Fast responding to transient over-voltage
Large absorbing transient energy capability
Surge protection in consumer electronics
Low clamping ratio and no following-on current
Surge protection in industrial electronics
Meets MSL level 1, per J-STD-020
Surge protection in electronic home appliances, gas and
Transistor, diode, IC, thyristor or triac semiconductor
protection
petroleum appliances
Relay and electromagnetic valve surge absorption
General Characteristics
Material
No Radioactive Material
Operating Temperature
-40℃ ~ +85℃
Storage Temperature
-55℃ ~ +125℃
Body
Nickel Plated
Leads
Tin Plated
Devices with No lead
Nickel Plated
SOCAY Electronics Corp., Ltd.
Revision June 23, 2017
www.socay.com
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Metal Oxide Varistor (MOV)
20D Series
Specifications – General Characteristics (25±5℃)
VAC
(V)
VDC
(V)
V1mA
(V)
IP
(A)
VC
(V)
20D180K 20D180KJ
11
14
18(15~21.6)
20
36
Withstanding
Maximum
Typical
Rated
Surge
Energy
Capacitance
Power
Current
(10/1000μs)
(Reference)
I(A)
I(A)
(J)
@1KHZ
Standard
High Surge
(J)
High
(W)
Standard
(pf)
1
2
1
2
Surge
Time Times Time Times
2000 1000 3000 1000
11
13
0.2
28500
20D220K 20D220KJ
14
18
22(19.5~26)
20
43
2000
1000
3000
1000
14
16
0.2
18500
20D270K 20D270KJ
17
22
27(24~30)
20
53
2000
1000
3000
1000
16
19
0.2
13000
20D330K 20D330KJ
20
26
33(29.5~36.5)
20
66
2000
1000
3000
1000
23
24
0.2
11500
20D390K 20D390KJ
25
31
39(35~43)
20
77
2000
1000
3000
1000
26
28
0.2
8500
20D470K 20D470KJ
30
38
47(42~54)
20
93
2000
1000
3000
1000
30
34
0.2
7400
20D560K 20D560KJ
35
45
56(50~62)
20
100
2000
1000
3000
1000
41
41
0.2
6500
20D680K 20D680KJ
40
56
68(61~75)
20
135
2000
1000
3000
1000
46
49
0.2
5800
20D820K 20D820KJ
50
65
82(74~90)
100
135
6500
4000
10000
7000
38
56
1.0
4900
20D101K 20D101KJ
60
85
100(90~110)
100
165
6500
4000
10000
7000
45
70
1.0
4000
20D121K 20D121KJ
75
100
120(108~132)
100
200
6500
4000
10000
7000
55
85
1.0
3300
20D151K 20D151KJ
95
125
150(135~165)
100
250
6500
4000
10000
7000
70
106
1.0
2700
20D181K 20D181KJ
115
150
180(162~198)
100
300
6500
4000
10000
7000
85
130
1.0
2200
20D201K 20D201KJ
130
170
200(180~220)
100
340
6500
4000
10000
7000
95
140
1.0
2000
20D221K 20D221KJ
140
180
220(198~242)
100
360
6500
4000
10000
7000
100
155
1.0
1800
20D241K 20D241KJ
150
200
240(216~264)
100
395
6500
4000
10000
7000
108
168
1.0
1650
20D271K 20D271KJ
175
225
270(243~297)
100
455
6500
4000
10000
7000
127
190
1.0
1500
20D301K 20D301KJ
190
250
300(270~330)
100
500
6500
4000
10000
7000
136
210
1.0
1300
20D331K 20D331KJ
210
275
330(297~363)
100
550
6500
4000
10000
7000
150
228
1.0
1200
20D361K 20D361KJ
230
300
360(324~396)
100
595
6500
4000
10000
7000
163
255
1.0
1100
20D391K 20D391KJ
250
320
390(351~429)
100
650
6500
4000
10000
7000
180
275
1.0
1000
20D431K 20D431KJ
275
350
430(387~473
100
710
6500
4000
10000
7000
190
305
1.0
930
20D471K 20D471KJ
300
385
470(423~517)
100
775
6500
4000
10000
7000
220
350
1.0
850
20D511K 20D511KJ
320
415
510(459~561)
100
845
6500
4000
10000
7000
220
360
1.0
780
20D561K 20D561KJ
350
460
560(504~616)
100
925
6500
4000
10000
7000
220
380
1.0
710
20D621K 20D621KJ
385
505
620(558~682)
100
1025
6500
4000
10000
7000
220
390
1.0
650
20D681K 20D681KJ
420
560
680(612~748)
100
1120
6500
4000
10000
7000
230
400
1.0
600
20D751K 20D751KJ
460
615
750(675~825)
100
1240
6500
4000
10000
7000
255
420
1.0
530
20D781K 20D781KJ
485
640
780(702~858)
100
1290
6500
4000
10000
7000
265
440
1.0
510
20D821K 20D821KJ
510
670
820(738~902)
100
1355
6500
4000
10000
7000
282
460
1.0
500
20D911K 20D911KJ
550
745
910(819~1001)
100
1500
6500
4000
10000
7000
310
510
1.0
440
20D102K 20D102KJ
625
825
1000(900~1100) 100
1650
6500
4000
10000
7000
342
565
1.0
400
20D112K 20D112KJ
680
895
1100(990~1210) 100
1814
6500
4000
10000
7000
383
620
1.0
460
20D122K 20D122KJ
750
990
1200(1080~1320) 100
1980
6500
4000
10000
7000
408
660
1.0
320
20D152K 20D152KJ
900
1200 1500(1350~1650) 100
2475
6500
4000
10000
7000
420
660
1.0
260
20D162K 20D162KJ 1000
1280 1600(1440~1760) 100
2640
6500
4000
10000
7000
606
660
1.0
320
20D182K 20D182KJ 1000
1465 1800(1620~1980) 100
2970
6500
4000
10000
7000
625
660
1.0
320
Type Number
Standard
High
Surge
Maximum
Allowable
voltage
Varistor
Voltage
Maximum
Clamping
Voltage
SOCAY Electronics Corp., Ltd.
Revision June 23, 2017
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Metal Oxide Varistor (MOV)
20D Series
Electrical Rating
Item
Test Condition / Description
Maximum Allowable
Voltage
The recommended maximum sine wave voltage (RMS) or the maximum DC
voltage can be applied continuously.
Varistor Voltage
Requirement
The voltage between two terminals with the specified measuring current
1mA.DC applied is call Vb.
The maximum voltage between two terminals with the specification
standard impulse current.
Applied waveform: 8/20μs
I
1.0
0.9
Maximum Clamping
Voltage
To meet the
specified value
0.5
0.1
0.0
8μsec
20μsec
30% Max
T
Rated Wattage
The maximum average power that can be applied within the specified
ambient temperature.
Energy
The maximum energy within the varistor voltage change of ±10% when one
impulse of 10/1000μs. or 2 msec. is applied.
Withstanding Surge
Current
The maximum current within the varistor voltage change of ±10% with the
standard impulse current (8/20ȝsec.) applied one time
Vb at 20℃-Vb at 70℃
Varistor Voltage
Temp. Coefficient
Vb at 20℃
×
1
50
× 100(% /
℃)
0.05% / ℃ max
The change of Vb shall be measured after the impulse listed below is
applied 10,000 times continuously with the interval of ten seconds at room
temperature.
5D Series
7D Series
Surge Life
10D Series
14D Series
20D Series
180K to 680K
100A (8/20μs)
820K to 751K
400A (8/20μs)
180K to 680K
250A (8/20μs)
820K to 821K
1200A (8/20μs)
180K to 680K
500A (8/20μs)
820K to 112K
2500A (8/20μs)
180K to 680K
1000A (8/20μs)
820K to 182K
4500A (8/20μs)
180K to 680K
2000A (8/20μs)
820K to 182K
6500A (8/20μs)
SOCAY Electronics Corp., Ltd.
Revision June 23, 2017
△Vb / Vb ≤ ±10%
www.socay.com
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@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Metal Oxide Varistor (MOV)
20D Series
Part Numbering
Part Marking
20 D XXX K J
J: High Surge, without: Standard
Tolerance:
K: ±10%, L: ±15%, M:
Logo
Product Type
±20%
VDE Accreditation Logo
UL Accreditation Logo
Varistor Voltage
Type:
D: Disk, S: Square
Element Diameter
Packaging Information
Part Number
Quantity
Packaging Option
Packaging Specification
20DXXXXX
250
Plastic Bag
Bulk Pack
Package Dimensions
Unit: mm
TABLE1
TABLE2
Symbol
Dimensions
Model
T(max.)
Model
T(max.)
H(max.)
H1(max.)
L(min.)
L1(min.)
D(max.)
P(±0.8)
T(max.)
d(±0.05)
d1(±0.05)
27.0
27.0
15.0
15.0
23.0
7.5/10.0
TABLE2
0.8/1.0
0.8/1.0
180K
220K
270K
330K
390K
470K
560K
680K
820K
101K
121K
151K
181K
201K
221K
241K
271K
301K
4.8
4.9
5.0
5.2
5.5
5.6
5.7
5.08
4.9
5.1
5.3
5.6
5.0
5.2
5.3
5.4
5.6
5.7
331K
361K
391K
431K
471K
511K
561K
621K
681K
751K
781K
821K
911K
102K
112K
122K
182K
-
5.8
6.0
6.2
6.5
6.7
6.9
7.0
7.2
7.5
8.2
5.3
8.5
9.0
9.5
10.1
10.6
13.2
-
SOCAY Electronics Corp., Ltd.
Revision June 23, 2017
www.socay.com
4/4
@ SOCAY Electronics Corp., Ltd. 2017
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
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