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Circuit Protection
System
Metal
Oxide
Varistors
40D Series
Revision:DEC-16
Please refer to http://www.ruilon.com.cn for current information.

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Metal Oxide Varistors - 40D Series
Features
Wide operating voltage (V1mA) range from 200V to 1600V.
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
4 0D4 7 1
K
Element Diameter
Type
D: Disk
S: Square
Nominal Varistor Voltage
471=47*101V
Varistor Voltage
Tolerance
K = ±10 %
Circuit Protection
System
Revision:DEC-16
Please refer to http://www.ruilon.com.cn for current information. Page:1

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Metal Oxide Varistors - 40D Series
Electriacl Characteristics
Maximum Allowable
Type Number
Voltage
Varistor Voltage
40D201K
40D221K
40D241K
40D271K
40D301K
40D331K
40D361K
40D391K
40D431K
40D471K
40D511K
40D561K
40D621K
40D681K
40D751K
40D781K
40D821K
40D911K
40D951K
40D102K
40D112K
40D122K
40D142K
40D162K
VAC(V)
130
140
150
175
190
210
230
250
275
300
320
350
385
420
460
485
510
550
575
625
680
750
880
1000
VDC(V)
170
180
200
225
250
275
300
320
350
385
415
460
505
560
615
640
670
745
765
825
895
990
1140
1280
V1mA(V)
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)
1200(1080~1320)
1400(1260~1540)
1600(1440~1760)
Maximum
Clamping
Voltage
Withstanding
Surge Current
IP(A)
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
VC(V)
340
360
395
455
500
550
595
650
710
775
845
925
1025
1120
1240
1290
1355
1500
1570
1650
1815
1980
2310
2640
I(A)
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
Maximum
Energy
(10/1000μs)
(J)
370
400
430
470
510
550
570
590
660
720
770
810
860
900
940
980
1080
1150
1200
1260
1380
1380
1550
1700
Typical
Capacitance
(Reference)
@1KHz(pf)
8400
8200
8000
7600
7300
6700
6200
5100
4900
4300
4200
4000
3800
3500
3200
3000
2900
2200
2000
1800
1600
1500
1300
1150
Circuit Protection
System
Revision:DEC-16
Please refer to http://www.ruilon.com.cn for current information. Page:2

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Metal Oxide Varistors - 40D 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:3

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Metal Oxide Varistors - 40D Series
Package Dimensions (Unit:mm)
K
K
H1
d1
D1
d1
W
TABLE 1
Symbol
H(max.)
H1(max.)
D(max.)
D1(±1.0)
T(max.)
d(±0.1)
d1(±0.3)
K(max.)
W(±0.5)
Φ(M±0.2)
Dimensions
52.5
16.5
42.0
25.4
TABLE 2
0.5
3.7
3.2
7.0
3.2
TABLE 2
Model
201K
221K
241K
271K
301K
331K
361K
T(max.)
6.2
6.3
6.4
6.6
6.8
6.9
7.1
Model
911K
951K
102K
112K
122K
142K
162K
T(max.)
10.4
10.6
11.2
11.8
12.3
13.3
14.3
Circuit Protection
System
Revision:DEC-16
Please refer to http://www.ruilon.com.cn for current information. Page:4