Varistors (ZNR Surge Absorber) Type D
Varistors (ZNR Surge Absorber)
Type: D
Series: E-S1
Varistors (ZNR Surge Absorber), Series E-S1,
improves E series products with high capability for
absorbing transient overvoltage in a compact size,
suitable for surge protection at high temperature.
Features
●Large withstanding surge current capability in compact sizes
●Withstanding surge current at max. 125 °C
●Large “Energy Handling Capability” absorbing transient overvoltages in compact sizes
●Wide range of varistor voltages
●RoHS compliant
Recommended Applications
●Transistor, diode, IC, thyristor or triac semiconductor protection
●Surge protection in consumer electronic equipment
●Surge protection in communication, measuring or controller electronics
●Surge protection in electronic home appliances, gas or petroleum appliances
Applicable Standards
●UL1449 (VZCA2/UL, VZCA8/C-UL)
●VDE IEC61051-1，-2，-2-2，IEC60950-1 Annex.Q，IEC62368-1 G8.2
●CQC (GB/T10193, GB/T10194, GB4943.1, GB8898)
Refer to "Standard Products" , and "Application Note for Safety Standards" , for the details.
■As for Handling Precautions and Minimum Quantity / Packing Unit
Please see Related Information
Explanation of Part Numbers
1
2
3
4
5
6
7
Ｅ
Ｒ
Ｚ
E
A
8
9
10
11
12
S
1
Product Code
Series
NEW
Lead Configuration
Norminal Varistor Voltage
E11 Series E11-S1
Symbol
Configuration
Packaging
E14 Series E14-S1
A
Straight Lead
Bulk
The first two digits are significant
figures and the third one denotes
the number of zeros following.
Design No.
S1
Long lead type
SC
Lead cut type
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Series E11-S1
NEW
Reference Guide to Standard Products
Part No.
Applicable
Standards
Varistor
Voltage
at 1 mA
Maximum
Allowable Voltage
Clamping
Voltage
at 8/20 μs
Maximum
Peak Current
at 8/20 μs (A)
Type
Name
Approvals
（V）
ACrms
(Ｖ)
DC
(Ｖ)
max.
(V)
lp
(A)
85℃
1 time
125℃
１time
2 times
ERZE11A201S1
E11201
○☆★◇◆
200
(185 to 225)
130
170
*340
50
6000
5000
4500
ERZE11A221S1
E11221
○☆★◇◆
220
(198 to 242)
140
180
*360
50
6000
5000
4500
ERZE11A241S1
E11241
○☆★◇◆
240
(216 to 264)
150
200
*395
50
6000
5000
4500
ERZE11A271S1
E11271
○☆★◇◆
270
(247 to 303)
175
225
*455
50
6000
5000
4500
ERZE11A331S1
E11331
○☆★◇◆
330
(297 to 363)
210
270
*545
50
6000
5000
4500
ERZE11A361S1
E11361
○☆★◇◆
360
(324 to 396)
230
300
*595
50
6000
5000
4500
ERZE11A391S1
E11391
○☆★◇◆
390
(351 to 429)
250
320
*650
50
6000
5000
4500
ERZE11A431S1
E11431
○☆★◇◆
430
(387 to 473)
275
350
*710
50
6000
5000
4500
ERZE11A471S1
E11471
○☆★◇◆
470
(423 to 517)
300
385
*775
50
6000
5000
4500
ERZE11A511S1
E11511
○☆★◇◆
510
(459 to 561)
320
410
*845
50
6000
5000
4500
ERZE11A561S1
E11561
○☆★◇◆
560
(504 to 616)
350
450
*930
50
6000
5000
4500
ERZE11A621S1
E11621
○☆★◇◆
620
(558 to 682)
385
505
1025
50
5000
5000
4500
ERZE11A681S1
E11681
○☆★◇◆
680
(612 to 748)
420
560
1120
50
5000
5000
4500
ERZE11A751S1
E11751
○☆★◇◆
750
(675 to 825)
460
615
1240
50
5000
5000
4500
ERZE11A821S1
E11821
○☆★◇◆
820
(738 to 902)
510
670
1355
50
5000
5000
4500
ERZE11A911S1
E11911
○☆★◇◆
910
(819 to 1001)
550
745
1500
50
5000
5000
4500
ERZE11A102S1
E11102
○☆★◇◆
1000
(900 to 1100)
625
825
1650
50
5000
5000
4500
ERZE11A112S1
E11112
○☆★◇◆
1100
(990 to 1210)
680
895
1815
50
5000
5000
4500
125℃
Maximum Allowable Voltage and Maximum Peak Current at 8/20 μs(A) at 125 °C
○ : UL1449 (VZCA2/UL, VZC A8/C-UL), ☆ : VDE (IEC61051-1, -2, -2-2), ★ : VDE (IEC60950-1 Annex.Q，IEC62368-1 G8.2),
◇ : CQC (GB/T10193, GB/T10194), ◆ : CQC (GB4943.1, GB8898)
※Approval number (File No.) of safety regulations are subject to revision without notice. Ask factory for a copy of the latest file No.
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Series E11-S1
NEW
Ratings and Characteristics
●Operating Temperature Range : ‒40 to 125 ℃ ●Storage Temperature Range : ‒40 to 125 ℃
Part No.
Maximum
Allowable
Voltage
Varistor
Voltage
Clamping
Voltage
（max.）
*lp
Rated
Power
Maximum Energy
Maximum Peak Current
Capacitance
at 8/20 μs
10/1000
μs
2 ms
85 ℃
1 time
(max.)
125 ℃ 125 ℃ at 1 kHz
１time 2 times
Ｖ1 ｍＡ(Ｖ)
ACrms
(Ｖ)
DC
(Ｖ)
(Ｖ)
(W)
(J)
(J)
(A)
(A)
(A)
(pF)
ERZE11A201S1
200(185 to 225)
130
170
340
0.6
*70
*50
6000
5000
4500
690
ERZE11A221S1
220(198 to 242)
140
180
360
0.6
*78
*55
6000
5000
4500
660
ERZE11A241S1
240(216 to 264)
150
200
395
0.6
*84
*60
6000
5000
4500
620
ERZE11A271S1
270(247 to 303)
175
225
455
0.6
*99
*70
6000
5000
4500
580
ERZE11A331S1
330(297 to 363)
210
270
545
0.6
115
*80
6000
5000
4500
520
ERZE11A361S1
360(324 to 396)
230
300
595
0.6
130
*90
6000
5000
4500
480
ERZE11A391S1
390(351 to 429)
250
320
650
0.6
140
100
6000
5000
4500
450
ERZE11A431S1
430(387 to 473)
275
350
710
0.6
155
110
6000
5000
4500
400
ERZE11A471S1
470(423 to 517)
300
385
775
0.6
175
125
6000
5000
4500
360
ERZE11A511S1
510(459 to 561)
320
410
845
0.6
190
136
6000
5000
4500
310
ERZE11A561S1
560(504 to 616)
350
450
930
0.6
190
136
6000
5000
4500
310
ERZE11A621S1
620(558 to 682)
385
505
1025
0.6
190
136
5000
5000
4500
300
ERZE11A681S1
680(612 to 748)
420
560
1120
0.6
190
136
5000
5000
4500
290
ERZE11A751S1
750(675 to 825)
460
615
1240
0.6
210
150
5000
5000
4500
280
ERZE11A821S1
820(738 to 902)
510
670
1355
0.6
235
165
5000
5000
4500
260
ERZE11A911S1
910(819 to 1001)
550
745
1500
0.6
255
180
5000
5000
4500
240
ERZE11A102S1
1000(900 to 1100)
625
825
1650
0.6
280
200
5000
5000
4500
220
ERZE11A112S1
1100(990 to 1210)
680
895
1815
0.6
310
220
5000
5000
4500
200
✽Ip Measuring current of clamping voltage : 50 A
Dimensions in mm (not to scale)
A max.
L±1.0
7.5
17.0
1.9
ERZE11A221S1
13.0
5.3
7.5
17.0
2.0
ERZE11A241S1
13.0
5.4
7.5
17.0
2.1
ERZE11A271S1
13.0
5.6
7.5
17.0
2.3
ERZE11A331S1
13.0
5.9
7.5
17.0
2.6
ERZE11A361S1
13.0
6.1
7.5
17.0
2.8
ERZE11A391S1
13.0
6.2
7.5
17.0
2.9
ERZE11A431S1
13.0
6.4
7.5
17.0
3.1
ERZE11A471S1
13.0
6.6
7.5
17.0
3.3
ERZE11A511S1
13.0
6.8
7.5
17.0
3.5
ERZE11A561S1
13.0
7.2
7.5
17.0
3.8
ERZE11A621S1
14.0
7.5
7.5
18.0
4.2
ERZE11A681S1
14.0
7.8
7.5
18.0
4.5
ERZE11A751S1
14.0
8.2
7.5
18.0
4.9
ERZE11A821S1
14.0
8.5
7.5
18.0
5.2
ERZE11A911S1
14.0
9.0
7.5
18.0
5.7
ERZE11A102S1
14.0
9.5
7.5
18.0
6.2
ERZE11A112S1
14.0
10.1
7.5
18.0
6.8
D
T
L
L
F±1.0
5.2
A
T max.
13.0
F
min.
D max.
20.0
Part No.
ERZE11A201S1
ø0.8
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
F
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Typical Characteristics
Voltage vs. Current
Impulse Derating
NEW
(Relation between
impulse width and impulse current multiple)
ERZE11A201S1 to ERZE11A511S1
ERZE11A201S1 to ERZE11A511S1
10000
2000
Max.Leakage
Current
2 times：5 min. interval
Max.Clamping Voltage
up to 10 times：2 min. interval
up to 106 times : 10 sec. interval
511
471
431
391
361
331
271
241
221
201
471
431
391
361
1000
Impulse Current（A)
1000
900
800
700
600
Voltage（V)
500
400
300
200
100
90
80
70
60
10
331
221
Test current waveform
50
10–6 to 10–3 A: Direct current
10–1 to 104 A: 8/20 μs
40
30
10-6
100
10-5
10-4
10-3
10-2
10-1
100
101
102
103
104
1 20
105
Current（A）
4000
Max.Leakage
Current
1000
10000
Impulse Width（μs）
ERZE11A561S1 to ERZE11A112S1
5000
100
ERZE11A561S1 to ERZE11A112S1
10000
Max.Clamping Voltage
2 times：5 min. interval
up to 10 times：2 min. interval
up to 106 times : 10 sec. interval
3000
112
102
911
821
2000
1000
751
681
Voltage（V)
911
821
Impulse Current（A)
621
561
102
1000
900
800
700
600
100
500
10
400
Test current waveform
300
10–6 to 10–3 A: Direct current
10–1 to 104 A: 8/20 μs
751
200
10-6
681
621
10-5
10-4
10-3
10-2
10-1
100
Current（A）
101
102
103
104
105
1
20
100
1000
10000
Impulse Width（μs）
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Series E14-S1
Reference Guide to Standard Products
Part No.
Applicable
Standards
Varistor
Voltage
at 1 mA
Maximum
Allowable Voltage
Clamping
Voltage
at 8/20 μs
Maximum
Peak Current
at 8/20 μs (A)
Type
Name
Approvals
（V）
ACrms
(Ｖ)
DC
(Ｖ)
max.
(V)
lp
(A)
85℃
1 time
125℃
１time
2 times
ERZE14A201S1
E14201
○☆★◇◆
200
(185 to 225)
130
170
*340
100
10000
7500
6500
ERZE14A221S1
E14221
○☆★◇◆
220
(198 to 242)
140
180
*360
100
10000
7500
6500
ERZE14A241S1
E14241
○☆★◇◆
240
(216 to 264)
150
200
*395
100
10000
7500
6500
ERZE14A271S1
E14271
○☆★◇◆
270
(247 to 303)
175
225
*455
100
10000
7500
6500
ERZE14A331S1
E14331
○☆★◇◆
330
(297 to 363)
210
270
*545
100
10000
7500
6500
ERZE14A361S1
E14361
○☆★◇◆
360
(324 to 396)
230
300
*595
100
10000
7500
6500
ERZE14A391S1
E14391
○☆★◇◆
390
(351 to 429)
250
320
*650
100
10000
7500
6500
ERZE14A431S1
E14431
○☆★◇◆
430
(387 to 473)
275
350
*710
100
10000
7500
6500
ERZE14A471S1
E14471
○☆★◇◆
470
(423 to 517)
300
385
*775
100
10000
7500
6500
ERZE14A511S1
E14511
○☆★◇◆
510
(459 to 561)
320
410
*845
100
10000
7500
6500
ERZE14A561S1
E14561
○☆★◇◆
560
(504 to 616)
350
450
*930
100
10000
7500
6500
ERZE14A621S1
E14621
○☆★◇◆
620
(558 to 682)
385
505
1025
100
7500
7500
6500
ERZE14A681S1
E14681
○☆★◇◆
680
(612 to 748)
420
560
1120
100
7500
7500
6500
ERZE14A751S1
E14751
○☆★◇◆
750
(675 to 825)
460
615
1240
100
7500
7500
6500
ERZE14A821S1
E14821
○☆★◇◆
820
(738 to 902)
510
670
1355
100
7500
7500
6500
ERZE14A911S1
E14911
○☆★◇◆
910
(819 to 1001)
550
745
1500
100
7500
7500
6500
ERZE14A102S1
E14102
○☆★◇◆
1000
(900 to 1100)
625
825
1650
100
7500
7500
6500
ERZE14A112S1
E14112
○☆★◇◆
1100
(990 to 1210)
680
895
1815
100
7500
7500
6500
125℃
Maximum Allowable Voltage and Maximum Peak Current at 8/20 μs(A) at 125 °C
○ : UL1449 (VZCA2/UL, VZC A8/C-UL), ☆ : VDE (IEC61051-1, -2, -2-2), ★ : VDE (IEC60950-1 Annex.Q，IEC62368-1 G8.2),
◇ : CQC (GB/T10193, GB/T10194), ◆ : CQC (GB4943.1, GB8898)
※Approval number (File No.) of safety regulations are subject to revision without notice. Ask factory for a copy of the latest file No.
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Series E14-S1
Ratings and Characteristics
●Operating Temperature Range : ‒40 to 125 ℃ ●Storage Temperature Range : ‒40 to 125 ℃
Part No.
Maximum
Allowable
Voltage
Varistor
Voltage
Clamping
Voltage
（max.）
*lp
Rated
Power
Maximum Energy
Maximum Peak Current
Capacitance
at 8/20 μs
10/1000
μs
2 ms
85 ℃
1 time
(max.)
125 ℃ 125 ℃ at 1 kHz
１time 2 times
Ｖ1 ｍＡ(Ｖ)
ACrms
(Ｖ)
DC
(Ｖ)
(Ｖ)
(W)
(J)
(J)
(A)
(A)
(A)
(pF)
ERZE14A201S1
200(185 to 225)
130
170
*340
1.0
140
100
10000
7500
6500
1300
ERZE14A221S1
220(198 to 242)
140
180
*360
1.0
155
110
10000
7500
6500
1200
ERZE14A241S1
240(216 to 264)
150
200
*395
1.0
168
120
10000
7500
6500
1100
ERZE14A271S1
270(247 to 303)
175
225
*455
1.0
190
135
10000
7500
6500
1000
ERZE14A331S1
330(297 to 363)
210
270
*545
1.0
228
160
10000
7500
6500
*900
ERZE14A361S1
360(324 to 396)
230
300
*595
1.0
255
180
10000
7500
6500
*900
ERZE14A391S1
390(351 to 429)
250
320
*650
1.0
275
195
10000
7500
6500
*800
ERZE14A431S1
430(387 to 473)
275
350
*710
1.0
303
215
10000
7500
6500
*800
ERZE14A471S1
470(423 to 517)
300
385
*775
1.0
350
250
10000
7500
6500
*750
ERZE14A511S1
510(459 to 561)
320
410
*845
1.0
382
273
10000
7500
6500
*700
ERZE14A561S1
560(504 to 616)
350
450
*930
1.0
382
273
10000
7500
6500
*700
ERZE14A621S1
620(558 to 682)
385
505
1025
1.0
382
273
*7500
7500
6500
*650
ERZE14A681S1
680(612 to 748)
420
560
1120
1.0
382
273
*7500
7500
6500
*600
ERZE14A751S1
750(675 to 825)
460
615
1240
1.0
420
300
*7500
7500
6500
*530
ERZE14A821S1
820(738 to 902)
510
670
1355
1.0
460
325
*7500
7500
6500
*500
ERZE14A911S1
910(819 to 1001)
550
745
1500
1.0
510
360
*7500
7500
6500
*400
ERZE14A102S1
1000(900 to 1100)
625
825
1650
1.0
565
400
*7500
7500
6500
*400
ERZE14A112S1
1100(990 to 1210)
680
895
1815
1.0
620
440
*7500
7500
6500
*350
✽Ip Measuring current of clamping voltage : 100 A
Dimensions in mm (not to scale)
F±1.0
A max.
L±1.0
5.2
10.0
20.0
2.1
ERZE14A221S1
16.5
5.3
10.0
20.0
2.2
ERZE14A241S1
16.5
5.4
10.0
20.0
2.3
ERZE14A271S1
16.5
5.6
10.0
20.0
2.5
ERZE14A331S1
16.5
5.9
10.0
20.0
2.8
ERZE14A361S1
16.5
6.1
10.0
20.0
3.0
ERZE14A391S1
16.5
6.2
10.0
20.0
3.1
ERZE14A431S1
16.5
6.4
10.0
20.0
3.3
ERZE14A471S1
16.5
6.6
10.0
20.0
3.5
ERZE14A511S1
16.5
6.8
10.0
20.0
3.7
ERZE14A561S1
16.5
7.2
10.0
20.0
4.0
ERZE14A621S1
17.5
7.5
10.0
20.5
4.4
ERZE14A681S1
17.5
7.8
10.0
20.5
4.7
ERZE14A751S1
17.5
8.2
10.0
20.5
5.1
ERZE14A821S1
17.5
8.5
10.0
20.5
5.4
ERZE14A911S1
17.5
9.0
10.0
20.5
5.9
ERZE14A102S1
17.5
9.5
10.0
20.5
6.4
ERZE14A112S1
17.5
10.1
10.0
20.5
7.2
D
T
L
F
ø1.0
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
L
T max.
16.5
A
D max.
20.0 min.
Part No.
ERZE14A201S1
F
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Typical Characteristics
Voltage vs. Current
Impulse Derating
ERZE14A201S1 to ERZE14A511S1
ERZE14A201S1 to ERZE14A511S1
10000
Max.Leakage
Current
2000
up to 10 times：2 min. interval
up to 106 times : 10 sec. interval
511
471
431
391
361
331
1000
271
241
221
201
Impulse Current (A)
600
500
Voltage（V）
2 times：5 min. interval
Max.Clamping Voltage
471
431
391
361
1000
900
800
700
400
300
200
100
10
100
90
80
70
60
241
331
221
Test current waveform
50
10–6 to 10–3 A: Direct current
10–1 to 104 A: 8/20 μs
40
30
10-6
10-5
10-4
10-3
10-2
10-1
100
101
102
103
104
1
20
105
Current（A）
4000
Max.Leakage
Current
1000
10000
ERZE14A561S1 to ERZE14A112S1
10000
Max.Clamping Voltage
2 times：5 min. interval
up to 10 times：2 min. interval
up to 106 times : 10 sec. interval
112
3000
102
911
821
751
681
621
561
2000
1000
Impulse Current (A)
5000
100
Impulse Width（μs）
ERZE14A561S1 to ERZE14A112S1
Voltage（V）
(Relation between
impulse width and impulse current multiple)
102
911
821
1000
900
800
700
100
600
500
10
400
300
200
10-6
Test current waveform
751
681
621
10-5
10–6 to 10–3 A: Direct current
10–1 to 104 A: 8/20 μs
10-4
10-3
10-2
10-1
100
Current（A）
101
102
103
104
105
1
20
100
1000
10000
Impulse Width (μs)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Straight Leads Cut Type (Bulk Type)
Ratings and Characteristics
※Refer to bulk standard type.
Dimensions in mm (not to scale)
D
B
A
T**
ød
L*
F
notes ✽ Dimension “L”: Conforms to each individtual specification.
✽✽ Dimension “T”: Conforms to each individual specification.
E11-S1
Series
Symbol
Varister Voltage
E14-S1
201 to 561
621 to 112
201 to 561
621 to 112
D
13.0 max
14.0 max
16.5 max
17.5 max
A
17.0 max
18.0 max
20.0 max
20.5 max
F
7.5±1.0
7.5±1.0
10.0±1.0
10.0±1.0
øｄ
B
Standard
Products Part No.
0.80
+0.08
-0.05
4.0±1.0
0.80
+0.08
-0.05
4.0±1.0
ERZE11A□□□SC
1.00
+0.1
-0.05
4.0±1.0
1.00
+0.1
-0.05
4.0±1.0
ERZE14A□□□SC
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
Varistors (ZNR Surge Absorber) Type D
Application Note for Safety Standards (For Series E-S1)
● Approvals products lists in "Reference Guide to Standard Products."
● UL and VDE : Registered in "Type name", it isn’t registered in "Panasonic Part No."
● CQC : Registered in "Panasonic Part No."
● "Rated Voltages" are specified for UL recognized components in list shown below.
The AC Rated Voltage and Maximum Allowable Voltage
Type Name
Maximum Allowable Voltage
Rated Voltage (Vrms)
ACrms (V)
DC (V)
UL1449
E✽201
130
170
118
E✽221
140
180
127
E✽241
150
200
136
E✽271
175
225
159
E✽331
210
270
189
E✽361
230
300
209
E✽391
250
320
227
E✽431
275
350
250
E✽471
300
385
272
E✽511
320
410
291
E✽561
350
450
320
E✽621
385
505
350
E✽681
420
560
381
E✽751
460
615
418
E✽821
510
670
463
E✽911
550
745
500
E✽102
625
825
568
E✽112
680
895
600
✽：11 series is 11, 14 series is 14
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
14-Dec-20
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Varistors (ZNR Surge Absorber)
Varistors (ZNR Surge Absorber) Type D, Series E, E-S1
Handling Precautions
Safety Precautions
In case that a Varistors (ZNR Surge Absorber) (hereafter referred to as the ZNR, or product name) is used,
if an abnormality takes place because of peripheral conditions of the ZNR(material, environments, power
source conditions, circuit conditions, etc. in equipment design), fire, electric shock, burn, or product failure
may be occur. The precautions for this product are described below, understand the content thoroughly
before usage. For more questions, contact us.
If there's any uncertainty/doubt/products safety items, please contact us. When a dogma shall be occurred
about safety for this products, be sure to inform us rapidly, operate your technical examination.
1.
Precautions to be strictly observed
1.1 Confirmation of performance ratings
Use the ZNR within its rated range of performance such as the Max. allowable voltage, withstanding surge
current, withstanding energy, impulse life(surge life), average pulse power, and operating temperature range.
If used outside the range, the ZNR can be degrade and have element fracture, which may result in smoking
and ignition.
1.2 To avoid accidents due to unexpected phenomena, take the following measures
1) In the event of fracture of the ZNR, its pieces may scatter ; hence, put the case or cover of the set product
in place.
2) Do not install the ZNR near combustible substances(polyvinyl chloride wires, resin moldings, etc.).
If it is difficult to do, install a nonflammable cover.
3) Across-the-line use
When the ZNR is used across a line, put a current fuse in series with the ZNR(Refer to Item 2.1.1). (4) .
4) Use between line to ground
(1) If the case that the ZNR is used between a line to the ground, the short-circuit of the ZNR may not
blow the current fuse because of grounding resistance, which may cause smoking and ignition of the
ZNR’s exterior resin.
As the measure against it, install an earth leakage breaker on the power supply side of the ZNR
position. If no earth leakage breaker is installed, use a thermal fuse together wth a current fuse in
series. (Refer to Table 1.)
(2) If the case that the ZNR is used between a live part to metal case, an electric shock may develop at a
shortcircuit of the ZNR ; hence, ground the metal case to the ground or keep it from the human body.
1.3 If ZNR is shorted out and happen smoke or ignition, please cut provided current to ZNR immediately.
2. Application notes
2.1 Pay attention to the following items to avoid the shortened life and failure of the ZNR
1) Circuit conditions
(1) Select a ZNR of which the maximum voltage including fluctuations in source voltage allows for the
maximum permissible circuit voltage. (Refer to Table 1.)
(2) In cases that surges are intermittently applied at short intervals(for example, in case that the voltage
of the noise simulator test is implemented etc.), do not let them exceed the ZNR’s rated power.
(3) Select a ZNR recommended in Table 1.
Across-the-line use
If possible, use a Part No. marked with * in case of voltage temporarily rises load unbalance of
separately-wired loads, short between hot and neutral-line, open of neutral line in
single-phase-three-wired system, and due to resonance at switching for a capacitive, inductive load.
14-Dec-20
Varistors (ZNR Surge Absorber)
Used between line to ground
Use a different Part No. from “Across-the-line use” as table 1, because of raising voltage in case of
“Line to Ground Fault”.
Use a Part No. marked with **in table 1, in case of the insulation resistance test(500 VDC) for
equipment. When using a Part of the varistor voltage that the insulation efficiency examination can
not be cleared, there is a case where the surge absorber can be done by removing it from the circuit
depending on the circuit condition(Refer examination of Japan Domestic Safety Regulations).
Use a Part No. marked with *** in table 1, in case of the withstanding voltage test
(1000 VAC or 1200 VAC) for equipment.
(4) Concerning current fuse
We recommend selecting a ZNR and the rated current of a current fuse as follows.
Finally, please be sure that there is no danger if the ZNR mounted on the equipment breaks.
●Type D, Series E, E-S1
Standard
ERZE05A□□□ ERZE07A□□□ ERZE08A□□□ ERZE10A□□□ ERZE11A□□□ ERZE14A□□□
Part No.
Fuse rated
10 A max.
10 A max.
5 A max.
7 A max.
7 A max.
10 A max.
current
◆ Fuses shall use rated voltages ap pro pri ate for circuits.
The recommended fuse position is shown in table 1, “Example of ZNR application”, however, if the
load current of protected equipment is larger than that of the above recommended fuse rated current,
install a current fuse at the position shown below.
Current Fuse
Power Source Side
Protected
Equipmen
ZNR
(5) Concerning thermal fuse
Set a thermal fuse to get high thermal
14-Dec-20
Varistors (ZNR Surge Absorber)
Table 1 Example of ZNR application
DC/AC
Single-phase
Across-the-Line use
Connections example
fuse
Use between Line to ground
DC/AC
Single-phase
fuse
ZNR1
L
L
Protected
Equipmen
N
ZNR1
N
Protected
Equipme
Equipmen
ZNR2
Thermal Fuse
Thermal coupling
AC 3-phase
AC 3-phase
fuse
fuse
ZNR3
ZNR3
ZNR3
Protected
Equipmen
ZNR3
Protected
Equipme
ZNR4
Example of varistor voltage
ZNR3
ZNR
ZNR 1
ZNR 3
Thermal Fuse
Thermal coupling
Source
voltage Nominai varistor voltage
AC 100 V
201 to 361*
AC 120 V
241 to 431*
AC 200 V
471 to 621*
AC 220 V
471 to 621*
AC 380 V
751, 821*
ZNR
Source
voltage
Nominai varistor voltage
AC 100 V
AC 220 V
ZNR 2
ZNR 4
821
AC 230 V
AC 240 V
AC 380 V
821
471
471
511
-
621*
-
and more**
-
511
-
621*
-
and more**
112**
-
Note : Element size is selected by impulse Condition.
(6) On use for equipment
The catalog guarantees the quality as individual component.
Before you use the products, please make sure to check and evaluate the products in
the circumstance where they are installed in your product.
2) Operating environments
(1) The ZNR is designed to be used indoors. Do not use it exposed outdoors.
(2) Do not use the ZNR in places exposed to temperatures beyond the operating temperature range, such
as places exposed to sunlight and vicinities of heating equipment.
(3) Do not use the ZNR in places exposed to high temperatures and high humidity, such as places exposed
directly to rain, wind, dew condensation, and vapor.
(4) Do not use the ZNR in dusty and salinity environment and atmospheres polluted by corrosive gases,
in liquids such as water, oil, chemical, organic solvent.
3) Processing conditions
(1) Do not wash the ZNR by such solvents(thinner, acetone, etc.) as its exterior resin deteriorates.
(2) Do not apply a strong vibration or shock (by falling, etc.) to the ZNR, cracking to its exterior resin
and element may occur.
(3) When coating the ZNR with resin(including molding), do not use such resin.
(4) Do not bend the ZNR type D lead wires at the position close to its ZNR type D exterior resin, or apply
external force to the position.
(5) When soldering the ZNR lead wires, follow the recommended conditions and do not melt the solder
and insulating materials constituting the ZNR.
(6) When designing lead-wire-terminal land-hole of circuit board, please check actual ZNR by reference
specification about center value of lead-wire terminal pitch.
14-Dec-20
Varistors (ZNR Surge Absorber)
Soldering Method
Recommended Condition
Attention Item
260 °C, within
Type D is not Refl ow soldering object part.
10 seconds.
* 1 Soldering iron temperature should not exceed 400 °C and should not be applied for mor than 5 seconds.
* 2 Profile be careful because there is a margin of error in the way of measuring.
* 3 The temperature depend on the size and the package density of the substrate.
Therefore, confirm every kind of the substrate.
Type D
Flow soldering
●Soldering temperature-time profile to recommend
Temperature (°C)
Flow soldering
Soldering
Preheating
Gradual cooling
Preheating
The normal to 130 °C
max. 120 s
Soldering
max. 260 °C
max. 10 s
Gradual cooling
Gradual cooling
Time
4) Long-term storage
(1) Do not store the ZNR under high temperature and high humidity. Store it indoor environment at a
temperature up to 40 °C and at humidity below 75 %RH, and use it within two years.
Before using the ZNR that has been stored for a long period(two years or longer), confirm the solderability.
(2) Avoid atmospheres full of corrosive gases (hydrogen sulfide, sulfurous acid, chlorine, ammonia, etc.).
(3) Avoid direct sunlight and dew condensation.
5) Rated Voltage for UL or other safety certifications
Our ZNR define “ Max. Allowable Voltage” and “Rated Voltage “ to keep leakage current specification and
others. If you getting certificate of safety approval about your equipment with our ZNR, please follow our
“Rated Voltage”.
6) Dropped product
Do not drop this product on the floor. If this product is dropped, it can be damaged mechanically or
electrically. Avoid using the dropped product.
3. Notices
3.1 Our ZNR was designed and manufactured for standard applications such as general electronics devices,
office equipment, information and communications equipment, measuring instruments, household
appliances and audio-video equipment.For applications in which special quality and reliability are required,
or if the failure or malfunction of the products may directly jeopardize life or cause threat of personal injury
(such as for aircraft and aerospace equipment, traffic and transport equipment, combustion equipment,
medical equipment, accident prevention and anti-theft devices, and safety equipment), please be sure to
consult with our sales representative in advance and to exchange product specifications which conform to
such applications. applications in which special quality and reliability are required, or if the failure or
malfunction of the products may.
3.2 Note that we do not take any responsibility for faults and abnormalities resulting from the use not in
conformity with the contents of entries in the delivery specification.
3.3 There is a possibility that the ZNR will unexpectedly cause smoke or ignite because of an abnormal rise of
the circuit voltage and invasion of excessive surge. To prevent that accident from spreading over the
equipment and not to expand the damage, use multiplex protection such as the adoption of frameretardant materials for housing parts and structural parts.
14-Dec-20
Varistors (ZNR Surge Absorber)
4. Applicable laws and regulations , others
4.1 This product not been manufactured with any ozone depleting chemical controlled under the Montreal
Protocol.
4.2 This product comply with RoHS(Restriction of the use of certain Hazardous Substance in electrical and
electronic equipment) (DIRECTIVE 2011/65/EU and (EU)2015/863).
4.3 All the materials used in this part are registered material under the Law Concerning the Examination and
Regulationof Manufacture, etc. of Chemical Substance.
4.4 If you need the notice by letter of “A preliminary judgement on the Laws of Japan foreign exchange and
Foreign Trade Control”, be sure to let us know.
4.5 These products are not dangerous goods on the transportation as identified by UN(United nations) numbers
or UN classification.
5. Others
5.1 As to the disposal of ZNR, check the method of disposal in each country or origin where the ZNR are
incorporated in your products to be used.
5.2 The technical information in this specification provides example of our products’ typical operations and
application circuit. We do not guarantee the non-infringement of third party’s intellectual property rights
and we do not grant any license, right or interest in our intellectual property.
14-Dec-20
