DNR10D220 (Millennium Components)
DNR VARISTORS

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Millennium Components Corp.
www.lotron.com.tw
6F-3, 169, Yang Ming Road, Kaohsiung Taiwan, R.O.C.
Tel: 886-7-3806196 Fax : 886-7-3807075
DNR VARISTORS
Description
DON’s DNRs are ZINC OXIDE non-linear resistors whose resistance changes as a
function of the applied voltage. The DNR provides a highly reliable and economic way to protect
against repeated high voltage transient and surges such as those produced by induced lightning
surges, switching surges and noise spike.
The DNR utilizes a ceramic element composed of Zinc Oxide and several kinds of metal
oxide additives that have been sintered at relatively highly temperature. Ohmic electrodes are
connected to each end of element by firing.
FEATURES:
Broad products range
Varistor Voltage : 18 V to 1.8 KV
Fast response to the rapidly rising surge voltage (m
Excellent non-linearity voltage
Symmetric V-1 characteristics
Great withstanding surge current
No follow-on current
Long Life
Sec.)
SPECIFICATIONS
MODEL
NO.
VARISTOR VOLTAGE
(v)
MIN MAX
MAX.
CONTINUOUS
VOLTAGE
VA
Crms
VDC
MAX.
CLAMPING
VOLTAGE
Vc (V) Ip (A)
PEAK
MAX.
TYPICAL
ALLOWABLE
CURRENT
ENERGY
CAPACITANCE
POWER
(a)
(J) (Referance)
(W) 8/20
2m Sec.
@ 1 KHz (PF)
Sec.x2
DNR5D180 18 16 20 11 14 40 1 0.01 0.3 50
1600
DNR5D220 22 20 24 14 18 48 1 0.01 0.4 50
1300
DNR5D270 27 24 30 17 22 60 1 0.01 0.5 50
1050
DNR5D330 33 30 36 20 26 73 1 0.01 0.6 50
900
DNR5D390 39 35 43 25 31 86 1 0.01 0.8 50
500
DNR5D470 47 42 52 30 38 104 1 0.01 1.0 50
450
DNR5D560 56 50 62 35 45 123 1 0.01 1.0 50
400
DNR5D680 68 61 75 40 56 150 1 0.01 1.2 50
350
DNR5D820 82 74 90 50 65 145 5 0.1 1.7 200
250
DNR5D101 100 90 110
60
85 175 5
0.1
2.0 200
200
DNR5D121 120 108 132
75
100 210
5
0.1
2.5 200
170
DNR5D151 150 135 165
90
125 260
5
0.1
3.0 200
140


DNR10D220 (Millennium Components)
DNR VARISTORS

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DNR5D181 180 162 198 115 150 315
5
DNR5D201 200 180 220 130 170 355
5
DNR5D221 220 198 242 140 180 380
5
DNR5D241 240 216 264 150 200 415
5
DNR5D271 270 243 297 175 225 475
5
DNR5D331 330 297 363 210 275 580
5
DNR5D361 360 324 396 230 300 620
5
DNR5D391 390 351 429 250 320 675
5
DNR5D431 430 387 473 275 350 745
5
DNR5D471 470 423 517 300 385 810
5
DNR7D180 18 16 20 11 14 36 2.5
DNR7D220 22 20 24 14 18 43 2.5
DNR7D270 27 24 30 17 22 53 2.5
DNR7D330 33 30 36 20 26 65 2.5
DNR7D390 39 35 43 25 31 77 2.5
DNR7D470 47 42 52 30 38 93 2.5
DNR7D560 56 50 62 35 45 110 2.5
DNR7D680 68 61 75 40 56 135 2.5
DNR7D820 82 74 90 50 65 135 10
DNR7D101 100 90 110
60
85 165 10
DNR7D121 120 108 132 75
100 200 10
DNR7D151 150 135 165 90
125 250 10
DNR7D181 180 162 198 115 150 300 10
DNR7D201 200 180 220 130 150 340 10
DNR7D221 220 198 242 140 180 360 10
DNR7D241 240 216 264 150 200 395 10
DNR7D271 270 243 297 175 225 455 10
DNR7D331 330 297 363 210 275 550 10
DNR7D361 360 324 396 230 300 595 10
DNR7D391 390 351 429 250 320 650 10
DNR7D431 430 387 473 275 350 710 10
DNR7D471 470 423 517 300 385 775 10
DNR10D180 18 16 20 11 14 36 5
DNR10D220 22 20 24 14 18 43 5
DNR10D270 27 24 30 17 22 53 5
DNR10D330 33 30 36 20 26 65 5
DNR10D390 39 35 43 25 31 77 5
0.1 3.5
0.1 4.0
0.1 4.5
0.1 5.0
0.1 6.0
0.1 6.5
0.1 7.5
0.1 8.0
0.1 9.0
0.1 10.0
0.02 0.8
0.02 0.9
0.02 1.0
0.02 1.2
0.02 1.5
0.02 1.8
0.02 2.2
0.02 2.5
0.25 3.5
0.25 4.0
0.25 5.0
0.25 6.0
0.25 8.0
0.25 10.0
0.25 10.0
0.25 10.0
0.25 12.0
0.25 14.0
0.25 15.0
0.25 17.0
0.25 20.0
0.25 20.0
0.05 1.5
0.05 2.0
0.05 2.5
0.05 3.0
0.05 3.5
200
200
200
200
200
200
200
200
200
200
125
125
125
125
125
125
125
125
600
600
600
600
600
600
600
600
600
600
600
600
600
600
250
250
250
250
250
110
80
70
70
65
55
50
50
45
40
3500
2800
2000
1500
1350
1150
950
700
550
500
450
350
290
250
250
200
170
145
130
130
110
100
7500
6000
4000
3000
2600


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DNR VARISTORS

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DNR10D470 47 42 52 30 38 93 5 0.05 4.5 250
2200
DNR10D560 56 50 62 35 45 110 5 0.05 5.5 250
1800
DNR10D680 68 61 75 40 56 135 5 0.05 6.5 250
1800
DNR10D820 82 74 90 50 65 135 25
0.4
8 1250
1800
DNR10D101 100 90 110
60
85 165 25
0.4
10 1250
1400
DNR10D121 120 108 132
75
100 200 25
0.4
12 1250
1100
DNR10D151 150 135 165
90
125 250 25
0.4
16 1250
900
DNR10D181 180 162 198 115 150 300 25
0.4
18 1250
660
DNR10D201 200 180 220 130 170 340 25
0.4
20 1250
500
DNR10D221 220 198 242 140 180 360 25
0.4
23 1250
450
DNR10D241 240 216 264 150 200 395 25
0.4
25 1250
400
DNR10D271 270 243 297 175 225 455 25
0.4
30 1250
350
DNR10D331 330 297 363 210 275 550 25
0.4
30 1250
315
DNR10D361 360 324 396 230 300 595 25
0.4
35 1250
300
DNR10D391 390 351 429 250 320 650 25
0.4
40 1250
270
DNR10D431 430 387 473 275 350 710 25
0.4
45 1250
250
DNR10D471 470 423 517 300 385 775 25
0.4
45 1250
230
DNR10D561 560 504 616 350 455 925 25
0.4
45 1250
190
DNR10D621 620 558 682 385 505 1025 25
0.4
45 1250
130
DNR10D681 680 612 748 420 560 1120 25
0.4
45 1250
130
DNR10D751 750 675 825 460 615 1240 25
0.4
50 1250
120
DNR10D781 780 702 858 485 640 1290 25
0.4
50 1250
120
DNR10D821 820 738 902 510 670 1355 25
0.4
55 1250
110
DNR10D911 910 819 1001 550 745 1500 25
0.4
60 1250
100
DNR10D102 1000 900 1100 625 825 1650 25
0.4
65 1250
90
DNR10D112 1100 990 1210 680 895 1815 25
0.4
70 1250
80
DNR14D180 18 16 20 11 14 36 10
0.1
3.5 500
18000
DNR14D220 22 20 24 14 18 43 10
0.1
4.0 500
15000
DNR14D270 27 24 30 17 22 53 10
0.1
5.0 500
10000
DNR14D330 33 30 36 20 26 65 10
0.1
6.0 500
7500
DNR14D390 39 35 43 25 31 77 10
0.1
7.0 500
6500
DNR14D470 47 42 52 30 38 93 10
0.1
8.5 500
5500
DNR14D560 56 50 62 35 45 110 10 0.1 10.0 500
4500
DNR14D680 68 61 75 40 56 135 10 0.1 12.0 500
3300
DNR14D820 82 74 90 50 65 135 50 0.6 14.0 2500 2900
DNR14D101 100 90 110
60
85 165 50
0.6
18.0 2500
2400
DNR14D121 120 108 132
75
100 200 50
0.6
22.0 2500
1900


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DNR VARISTORS

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DNR14D151 150 135 165
DNR14D181 180 162 198
DNR14D201 200 180 220
DNR14D221 220 198 242
DNR14D241 240 216 264
DNR14D271 270 243 297
DNR14D331 330 297 363
DNR1D361 360 324 396
DNR14D391 390 351 429
DNR14D431 430 387 473
DNR14D471 470 423 517
DNR14D561 560 504 616
DNR1D621 620 558 682
DNR14D681 680 612 748
DNR14D751 750 675 825
DNR14D781 780 702 858
DNR14D821 820 738 902
DNR14D911 910 819 1001
DNR14D102 1000 900 1100
DNR14D112 1100 990 1210
DNR14D182 1800 1620 1980
DNR20D180 18 16 20
DNR20D220 22 20 24
DNR20D270 27 24 30
DNR20D330 33 30 36
DNR20D390 39 35 43
DNR20D470 47 42 52
DNR20D560 56 50 62
DNR20D680 68 61 72
DNR20D820 82 74 90
DNR20D101 100 90 110
DNR20D121 120 108 132
DNR20D151 150 135 165
DNR20D181 180 162 198
DNR20D201 200 180 220
DNR20D221 220 190 242
DNR20D241 240 216 264
95
115
130
140
150
175
210
230
250
275
300
350
385
420
460
485
510
550
625
680
1000
11
14
17
20
25
30
35
40
50
60
75
95
115
130
140
150
125
150
170
180
200
225
275
300
320
350
385
455
505
560
615
640
670
745
825
895
1465
14
18
22
26
31
38
45
56
65
85
100
125
150
170
180
200
250
300
340
360
395
455
550
595
650
710
775
925
1025
1120
1240
1290
1355
1500
1650
1815
2970
36
43
53
65
77
93
110
135
135
165
200
250
300
340
360
395
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
20
20
20
20
20
20
20
20
100
100
100
100
100
100
100
100
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
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
25.0 2500
30 2500
35.0 2500
40 2500
40 2500
50 2500
60 2500
65 2500
70 2500
75 2500
80 2500
80 2500
85 2500
90 2500
100 2500
105 2500
110 2500
120 2500
130 2500
140 2500
240 2500
10 1000
13 1000
15 1000
20 1000
24 1000
30 1000
35 1000
40 1000
27 4000
30 4000
40 4000
50 4000
60 4000
70 4000
75 4000
80 4000
1500
1300
1000
1000
900
750
650
550
500
450
400
350
250
250
230
230
200
180
150
150
100
37000
30000
22000
17000
15000
13000
11000
7000
5500
4800
3800
3000
2400
2000
2000
1800


DNR10D220 (Millennium Components)
DNR VARISTORS

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DNR20D271 270 243 297 175 225 455 100
1.0
90 4000
DNR20D331 330 297 363 210 275 550 100
1.0
105 4000
DNR20D361 360 324 396 230 300 595 100
1.0
120 4000
DNR20D391 390 351 429 250 320 650 100
1.0
130 4000
DNR20D431 430 387 473 275 350 710 100
1.0
140 4000
DNR20D471 470 423 517 300 385 775 100
1.0
150 4000
DNR20D561 560 504 616 350 455 925 100
1.0
150 4000
DNR20D621 620 558 682 385 505 1025 100
1.0
150 4000
DNR20D681 680 612 748 420 560 1120 100
1.0
160 4000
DNR20D751 750 675 825 460 615 1240 100
1.0
175 4000
DNR20D781 780 702 858 485 640 1290 100
1.0
180 4000
DNR20D821 820 738 902 510 670 1355 100
1.0
190 4000
DNR20D911 910 819 1001 550 745 1500 100
1.0
215 4000
DNR20D102 1000 900 1100 625 825 1650 100
1.0
230 4000
DNR20D112 1100 990 1210 680 895 1815 100
1.0
250 4000
DNR20D182 1800 1620 1980 1000 1465 2970 100
1.0
400 4000
temperature : -40-+85
Storage temperature : -40-+125
VARISTOR VOLTAGES are measured at 0.1 mA for 5D Series, and at 1 mA for 7D, 10D, 14D and 20D Series.
“Non-Standard Specifications ” are available.
APPLICATIONS :
Transistor, Diode, IC, Thyristor and Triac semiconductor.
Surge protection in consumer electronics.
Surge protection in industrial electronics.
Surge protection in communication, measuring and controller electronics.
Surge protection in electronic home appliances, gas and petroleum appliances.
Electrostatic discharges and noise spike suppression.
Relay and electromagnetic valve surge absorption.
1600
1350
1200
1000
900
900
660
500
460
420
420
400
350
320
300
200


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DNR VARISTORS

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CHARACTERISTICS
DNR has the forward-reverse symmetrical electrical characteristics shown in the Fig 1.
The curve is plotted for a wider range of current than that normally given in data sheet to show three
regions in Fig 2.
*Pre –breakdown region
*Normal operating region
*Upturn region
2-2 Voltage temperature coefficient
The voltage temperature coefficient (TC) is generally calculated by measuring VIcm A at 20 C and
V2cmA at 70 C.
2-3 Power derating
2-4 Surge test wave form according to IEC60 – 2, section 6.


DNR10D220 (Millennium Components)
DNR VARISTORS

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Precaution for Handing
1. Line protection
Line to Line protection
DC
AC Single phase
Ac three phase
Line to Line to Ground protection
DC
AC Single phase
AC three phase
Line to Line
Line to Ground
DNR
Line voltahe
AC 110V
Part number
201K
DNR-
221K
241K
271K*
DNR
DNR
2
Line voltage
Part number
DNR-
431K
471K
AC 110/220V
DNR
1
AC 220V
DNR-
DC 12V
DNR-
391K
431K
471K
220K
DNR
4
DNR-
AC 220V
431K
471K
DNR
3
DC 24V
DNR-
AC 220V
DNR-
390K
391K
431K
471K*
Notes:
1) when the 500V insulation resistance test of the circuits
employing NDR is conducted, DNR should be removed after
getting approval from the custom, or DNR** with the maximum
Notes:
allowable voltage exceeding to test voltage should be used.
1) Maximum operating voltage should be lower than maximum
2) When the 1000V withstanding voltage test is conducted, DNR
allowable voltage of DNR at all times.
should be removed after getting approval from the customer
2) DNRs with are recommended for AC 110 and 220 applications according to the relevant regulations, or DNR***with the
to withstand a temporary over voltage caused by LC resonation in maximum allowable voltage exceeding to the test voltage should
capacitive load.
be used.
3) To avoid DNR failure caused by the ground fault, DNR with
higher varistor voltage listed in the table should be used for the
AC 110V line to ground application


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DNR VARISTORS

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Application examples
Protected circuit
Location
Home application
Indoor
Outdoor
Notes for selection
Part number 1) The special using conditions of the
05 individual protected circuit should be
DNR-07D K taken into account to DNR selection in
14 addition to the general selection
07 procedure.
DNR-10D
K 2) Lightning arrester box are available for
14 heavy duty operations.
Communications
Measurements
Controls
Indoor
Outdoor
DNR-10D
10
DNR-14D
K
K
20
Consumer
Industrial
Indoor
Outdoor
14
DNR- D
20
K
1. A surge excess of the specified withstanding surge current may cause short circuits or mechanical breakdown. The
following counter measures re recommended.
1) Location of the over current protector (circuit breaker and current fuse) should be in the power line to the
circuit (Location A) or in series with DNR (Location B).
Part number DNR+05D
DNR+07D
DNR+10D
DNR-14D
DNR-20D
Fuse rating
1 to 2A
2 to 3A
3 to 5A
3 to 10A
5 to 10A
2) It is recommended that a fuse listed in the table be put in location A or B.
3) In case that DNR is used in line to ground, the ground fault circuit interrupter should be applied in location A
or thermally coupled fuse should be applied in location B.
4) DNR should not be used near the flamable materials.
2. When DNR is molded at end-user, molding resin materials should be carefully selected, otherwise DNR’s long term
stability could degradate.
3. DNR should not be used near heat generating devise and free from direct sunlight. DNR should be used within the
specified operating temperature range.
4. DNR should be free from dust, metal power, dew and sea wind. A protective box is recommended to prevent the unit
from those.


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DNR VARISTORS

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2. Switching surge protection, semiconductor protection and contact spark suppression.
Switching surge protection Semiconductor protection Contact spark suppression
General selection examples
Voltage Varistor voltage
DC 12V DNR-
DC 24V DNR-
DC 100V DNR-
AC 110V
201K
221K
DNR-
Notes for selection
1) The maximum allowable voltage of DNR
should be higher than maximum operating
voltage at all times.
2) Energy handling capability (energy or wattage
rating) of DNR should be selected by studying
switching surge energy from the inductive load.
1) Refer to the mentioned precautions described in power line protection.
2) Capacitor connection in parallel with DNR is recommended for a contact spark suppression.
3. Signal line protection
Signal line protection
General selection examples
Notes for selection
Signal voltage
Varistor voltage
1) DNR has relatively high capacitance listed in the table.
DC 12V Max.
DNR-
Special attention should be paid for it in high frequency
DNR-
circuits.
DNR-
2) When high voltage such as the ringer voltage in
telephone signal line is overlaid on signal voltage,
DC 24V
DNR-
varistor voltage of DNR should be selected based upon
DNR-
above higher voltage.
3) When DNR’s insertion loss in high frequency circuits
is vary critical, DNR with * is recommended.
Refer to the mentioned precautions described in power line protection.


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DNR VARISTORS

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ORDERING SYSTEM
DNR
D
K-
Lead form: S =Straight lead
K =Kinked lead
Packing: R =Reel packing
B =Bulk packing
Tolerance: J = 5% K= 10% M= 20%
Voltage of VARISTOR VcmA
Series No.
Element diameter
Symbol of DON’S VARISTORS




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