20D Series
Varistor Type MYG
Type MYG Varistors are made of semiconductor ceramic materials composed mainly of
zinc oxide. They have non-linear resistance that changes as a function of applied voltage. It has
small size, high current capacity, and high protection level.
Features
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Recommended Applications
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Protection of semiconductors
Surge protection of consumer equipment
Surge protection of communication, measuring or controller instrument
Relay or electromagnetic Valve surge absorption
Wide Varistor voltage range (18V½１８００V)
Excellent non-linearity and protection level
Large withstanding surge current
Fast response（≤20ns）
Explanation of Part Numbers
D
Element Size
20
20mm
Varistor Voltage
The first two digits are
S
ignificant figures and the
third one denotes number of
zeros following
Voltage
Tolerance
K:±10%
Dimension
Range of voltage
(V)
D
max
Dimensions(mm)
T
max
L
min
d±
0.1
D1±1.0
18 - 68
82 - 1800
23.0
23.5
4.1~5.5 25
4.8~15.5 25
1.0
1.0
10.0
10.0
REV.2014.05.01
01 | www.spsemi.cn
20D Series
Specification and Electrical Characteristics
Part Number
Maximum Allowable Maximum
Voltage
Energy
Acrms
(V)
1000
750
680
625
550
510
485
460
420
385
350
320
300
275
250
230
210
190
175
150
140
130
115
95
75
60
50
40
35
30
25
20
17
14
11
DC
(V)
1465
1300
895
825
745
670
640
615
560
505
460
415
385
350
320
300
275
250
225
200
180
170
150
125
100
85
65
56
45
38
31
26
22
18
14
10/100μS
(J)
560.0
420.0
280.0
280.0
280.0
266.0
266.0
266.0
224.0
224.0
210.0
210.0
210.0
196.0
182.0
168.0
140.0
133.0
126.0
112.0
105.0
98.0
84.0
70.0
56.0
42.0
37.8
23.8
19.6
16.8
13.2
11.2
9.1
7.4
6.1
Withstanding Surge
Current 8/20μs
1 time
(A)
2times
Rated
Wattage
Varistor Voltage
V
1mA
(V)
1800(1620-1980)
1500(1350-1650)
1100(990-1210)
1000(900-1100)
910(819-1001)
820(738-902)
780(702-858)
750(675-825)
680(612-748)
620(558-682)
560(504-616)
510(459-561)
470(423-517)
430(387-473)
390(351-429)
360(324-396)
330(297-363)
300(270-330)
270(243-297)
240(216-264)
220(198-242)
200(180-220)
180(162-198)
150(135-165)
120(108-132)
100(90-110)
82(74-90)
68(61-75)
56(50-62)
47(42-52)
39(35-43)
33(30-36)
27(24-30)
22(20-24)
18(15-21)
Maximum
Clamping
Voltage
V
100A
(V)
2970
2475
1815
1650
1500
1355
1290
1240
1120
1025
920
845
775
710
650
595
550
505
455
395
360
330
300
250
200
165
135
*135
*110
*93
*77
*65
*53
*43
*38
(W)
20D182K
20D152K
20D112K
20D102K
20D911K
20D821K
20D781K
20D751K
20D681K
20D621K
20D561K
20D511K
*
20D471K
20D431K
20D391K
20D361K
20D331K
20D301K
*
20D271K
20D241K
20D221K
20D201K
20D181K
20D151K
20D121K
20D101K
*
20D820K
20D680K
20D560K
*
20D470K
20D390K
20D330K
20D270K
20D220K
20D180K
6500
4000
1.0
2000
1000
0.2
Note：
*
Stand for commonly used models
1、
2、
Varistor voltage is measured at 0.1 mA for 05D, and at 1 mA for 07D, 10D, 14D, 20D, respectively.
3、Operating Temperature Range:
－40℃½+85℃
Storage Temperature Range:
－40℃½+125℃
REV.2014.05.01
02 | www.spsemi.cn
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