“ZNR” Transient/Surge Absorbers (Type E)
“ZNR” Transient/Surge Absorbers
Type:
E
The ZNR Type E is capable of handling larger surge
energy than Type D in applications to protect electronic
equipment or semiconductor devices from switching and
induced lightning surges.
■ Features
■ Recommended Applications
● Very large surge withstanding capability with a
compact size
● Direct mounting on boards like a power distribution
board available
● Fast response to steep impulse voltage
● Low clamping voltage for better surge protection
● RoHS compliant
● Transistor, diode, IC, thyristor or triac semiconductor
protection
● Surge protection in industrial power plant operations
● Relay or electromagnetic valve surge absorption
● Surge absorption applications in broadcasting,
communications devices, traffic/railroad, agricultural
facilities, waterworks
● Surge protection of automatic control devices for
power distribution line
■ Related Standards
[UL/CSA recognized models are available on request]
● UL1449 File No. E321499
(Title: Surge Protective Devices)
● CSA C22.2 No.1 Class 2221 01 File No. LR-92226
(Title: Accessories and Parts for Electronic Products)
● Each type designation is not registered by Part Number.
If you have any question on type designation, please
contact and ask our office.
Note: Ask our factory for Product Specification before
use.
■ Handling Precautions and Minimum Quantity / Packing Unit
Please see Related Information
■ Explanation of Part Numbers
1
2
3
4
&
3
;
$
5
Product Code
6
Element Size
7
8
&
,
Type
Tolerance
9
10
11
Nominal
Varistor Voltage
12
Design No.
■ Dimensions in mm (not to scale)
W
H
L
ERZC20EK□□□□
48±1
42±1
39±1
ERZC32EK□□□□
60±1
55±1
51±1
24
ISO
M4
4.3
Part No.
L
W
H
5
12
ZNR
Part No.
Date code
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.
01 Aug. 2012
– 44 –
“ZNR” Transient/Surge Absorbers (Type E)
20 Series
■ Ratings and Characteristics (ERZC20EK)
● Operating Temperature Range : –40 to 85 °C
● Storage Temperature Range
: –40 to 110 °C
Part No.
ERZC20EK201
ERZC20EK241
ERZC20EK271
ERZC20EK361
ERZC20EK391
ERZC20EK431
ERZC20EK471
ERZC20EK511
ERZC20EK621
ERZC20EK681
ERZC20EK751
ERZC20EK781
ERZC20EK821
ERZC20EK911
ERZC20EK102
ERZC20EK112
Varistor
Voltage
Maximum
Allowable
Voltage
V1 mA (V)
ACrms (V) DC (V)
170
200 (185 to 225)
130
200
240 (216 to 264)
150
225
270 (247 to 303)
175
300
360 (324 to 396)
230
320
390 (351 to 429)
250
350
430 (387 to 473)
275
385
470 (423 to 517)
300
415
510 (459 to 561)
320
505
620 (558 to 682)
385
560
680 (612 to 748)
420
615
750 (675 to 825)
460
640
780 (702 to 858)
485
670
820 (738 to 902)
510
745
910 (819 to 1001)
550
825
1000 (900 to 1100)
625
895
1100 (990 to 1210)
680
Maximum
Clamping
Voltage
Rated
Power
Energy
(2 ms)
V100 A (V)
340
395
455
595
650
710
775
845
1025
1120
1240
1290
1355
1500
1650
1815
(W)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
(J)
80
95
100
120
130
140
150
150
160
175
190
200
215
240
245
250
Maximum
Clamping
Voltage
Rated
Power
Energy
(2 ms)
V200 A (V)
340
395
455
595
650
710
775
845
1025
1120
1240
1290
1355
1500
1650
1815
(W)
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
(J)
210
240
255
325
350
400
405
405
415
450
500
520
545
600
620
640
Maximum
Typical
Peak Current
Capacitance
(8/20 μs)
(Reference)
1 time 2 times
(A)
(A) at 1kHz (pF)
2300
8000 5000
1500
8000 5000
1400
8000 5000
1300
8000 5000
1200
8000 5000
1000
8000 5000
950
8000 5000
930
8000 5000
900
8000 5000
850
8000 5000
800
8000 5000
800
8000 5000
700
8000 5000
700
8000 5000
400
8000 5000
350
8000 5000
32 Series
■ Ratings and Characteristics (ERZC32EK)
● Operating Temperature Range : –40 to 85 °C
● Storage Temperature Range
: –40 to 110 °C
Part No.
ERZC32EK201
ERZC32EK241
ERZC32EK271
ERZC32EK361
ERZC32EK391
ERZC32EK431
ERZC32EK471
ERZC32EK511
ERZC32EK621
ERZC32EK681
ERZC32EK751
ERZC32EK781
ERZC32EK821
ERZC32EK911
ERZC32EK102
ERZC32EK112
Varistor
Voltage
Maximum
Allowable
Voltage
V1 mA (V)
ACrms (V) DC (V)
170
200 (185 to 225)
130
200
240 (216 to 264)
150
225
270 (247 to 303)
175
300
360 (324 to 396)
230
320
390 (351 to 429)
250
350
430 (387 to 473)
275
385
470 (423 to 517)
300
415
510 (459 to 561)
320
505
620 (558 to 682)
385
560
680 (612 to 748)
420
615
750 (675 to 825)
460
640
780 (702 to 858)
485
670
820 (738 to 902)
510
745
910 (819 to 1001)
550
825
1000 (900 to 1100)
625
895
1100 (990 to 1210)
680
Maximum
Typical
Peak Current
Capacitance
(8/20 μs)
(Reference)
1 time 2 times
(A)
(A) at 1kHz (pF)
5500
25000 20000
5000
25000 20000
4200
25000 20000
3500
25000 20000
3000
25000 20000
2500
25000 20000
2500
25000 20000
2400
25000 20000
2200
25000 20000
2100
25000 20000
2000
25000 20000
1900
25000 20000
1800
25000 20000
1700
25000 20000
1000
25000 20000
800
25000 20000
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.
01 Aug. 2012
– 45 –
“ZNR” Transient/Surge Absorbers (Type E)
■ Typical Characteristics (Type E)
.BY-FBLBHF$VSSFOU
Voltage vs. Current
(ERZC20EK201 to ERZC20EK511)
.BY$MBNQJOH7PMUBHF
2000
1000
900
800
700
600
&,
$
&3;
,
&
$
&3;
,
&
$
&3;
&,
;$
&3
500
Voltage (V)
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
400
300
&3;$&,
&,
&, ;$
;$ &3
200
&3
&,
$
&3; &,
;$
&3
100
90
80
70
60
Test Current Waveform
10-6 to 10-3 A: Direct Current
10-1 to 104 A: 8/20 μs
50
40
30
10-6
(ERZC20EK621 to ERZC20EK112)
10-5
10-4
10-3
10-2
10-1
100
Current (A)
.BY-FBLBHF$VSSFOU
101
102
103
104
105
.BY$MBNQJOH7PMUBHF
4000
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
3000
Voltage (V)
2000
&3;$&,
,
&
;$
,
&3
&
;$
,
&3
&
;$
&3
,
&
;$
&3
&,
$ ,
;
&3
&
;$
,
&3
&
;$
&3
1000
900
800
700
600
500
,
&
;$
&3
400
300
Test Current Waveform
10-6 to 10-3 A: Direct Current
10-1 to 104 A: 8/20 μs
200
10-6
10-5
10-4
10-3
10-2
10-1
100
Current (A)
101
102
103
104
105
■ Impulse Derating Curve (Relation between impulse width and surge, repetitively)
20 Series
(ERZC20EK201 to ERZC20EK271)
20 Series
(ERZC20EK361 to ERZC20EK681)
10000
8000
6000
10000
8000
6000
4000
4000
2000
1000
800
600
400
1
2
m
e
Ti
10
200
100
80
60
40
20
Ti
m
Ti
es
10 2 me
s
Ti
m
10 3 es
Ti
10 4 mes
Tim
es
10 5
T
10 6 imes
Tim
es
Impulse Current (A)
Impulse Current (A)
2000
1000
800
600
400
200
100
80
60
40
20
10000
8000
6000
2 times : 5 minutes
to 10 times : 2 minutes
6
to 10 times : 10 seconds
1
2000
Ti
m
10
2
Ti
e
Ti
m
e
es s
m
10 2
Ti
m
10 3 es
Ti
m
es
10 4
Tim
es
10 5
Ti
10 6 mes
Tim
es
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
10
8
6
4
2
2
2
1
1
10
8
6
4
20
100
1000
Impulse Width (μs)
10000
20
2 times : 5 minutes
to 10 times : 2 minutes
to 106 times : 10 seconds
4000
Impulse Current (A)
2 times : 5 minutes
to 10 times : 2 minutes
6
to 10 times : 10 seconds
20 Series
(ERZC20EK751 to ERZC20EK112)
2
1
Ti
m
Ti
e
m
es
10
Ti
m
es
10 2
10 3 Tim
T es
10 4 ime
s
Ti
10 5 mes
T
10 6 imes
Tim
es
1
100
1000
Impulse Width (μs)
10000
20
100
1000
Impulse Width (μs)
10000
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.
01 Aug. 2012
– 46 –
“ZNR” Transient/Surge Absorbers (Type E)
■ Typical Characteristics (Type E)
.BY-FBLBHF$VSSFOU
Voltage vs. Current
(ERZC32EK201 to ERZC32EK511)
.BY$MBNQJOH7PMUBHF
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
2000
Voltage (V)
1000
900
800
700
600
&3;$&,
&3;$&,
&3;$&,
,
&
$
;
,
&3 &
;$
&3 &,
$
;
&3
,
&
;$
&3
500
400
300
&,
;$ ,
&3 $&
;
&3
,
&
;$ &,
3
&
;$
&3
200
100
90
80
70
60
50
Test Current Waveform
10-6 to 10-3 A: Direct Current
10-1 to 104 A: 8/20 μs
40
30
10-6
(ERZC32EK621 to ERZC32EK112)
10-5
10-4
10-3
10-2
10-1
100
Current (A)
.BY-FBLBHF$VSSFOU
4000
101
102
103
104
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
.BY$MBNQJOH7PMUBHF
3000
Voltage (V)
2000
105
,
&
$ &,
;
&3 $ ,
;
&
&3 $
;
&3
&,
;$ &,
3
& $ ,
;
&
&3 $
;
&3
&,
$
;
&3
1000
900
800
700
600
500
&,
;$
3
&
400
300
Test Current Waveform
10-6 to 10-3 A: Direct Current
10-1 to 104 A: 8/20 μs
200
10-6
10-5
10-4
10-3
10-2
10-1
100
Current (A)
101
103
102
104
105
■ Impulse Derating Curve (Relation between impulse width and surge, repetitively)
2 times : 5 minutes
to 10 times : 2 minutes
6
to 10 times : 10 seconds
20000
10000
8000
6000
Ti
m
400
200
10 4
100
80
60
10 5
10 6
Tim
es
Tim
Ti
m
1
es
4000
Ti
10
1000
800
600
m
2
e
2000
Ti
m
es
Tim
10 3 es
Tim
es
10 2
400
200
100
80
60
10 4
10 5
40
es
10 6
Tim
es
20
2
20
Tim
Tim
es
1000
800
600
Tim
200
10 3
100
80
60
10 4
10
8
6
10
8
6
4
4
4
2
2
100
1000
Impulse Width (μs)
10000
20
m es
es
Tim
10 5
10 6
20
es
es
Ti
40
es
m
1
10 2 0 T
im
400
10
8
6
20
Ti
e
Ti
m
e
10 2 s
Tim
es
10 3
Tim
es
1000
800
600
40
2000
10000
8000
6000
m
10
4000
Ti
m
e
es
2 times : 5 minutes
to 10 times : 2 minutes
6
to 10 times : 10 seconds
20000
Ti
Impulse Current (A)
1
2
10000
8000
6000
32 Series
(ERZC32EK751 to ERZC32EK112)
1
2000
2 times : 5 minutes
to 10 times : 2 minutes
6
to 10 times : 10 seconds
20000
Impulse Current (A)
4000
32 Series
(ERZC32EK361 to ERZC32EK681)
Impulse Current (A)
32 Series
(ERZC32EK201 to ERZC32EK271)
es
Tim
es
es
Tim
Tim
es
2
100
1000
Impulse Width (μs)
10000
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.
01 Aug. 2012
– 47 –
“ZNR” Transient/Surge Absorbers (Type E)
■ Performance Characteristics (Type E)
Electrical
Characteristics
Test Methods/Description
Specifications
Standard Test
Condition
Electrical characteristics shall be measured at following conditions
(Temperature: 5 to 35 °C,Humidity: Max. 85 %)
———
Varistor Voltage
The voltage between two terminals with the specified measuring
current CmA DC applied is called Vc or VCmA. The measurement shall
be made as fast as possible to avoid heat affection.
Maximum Allowable
Voltage
The maximum sinusoidal wave voltage (rms) or the maximum DC
voltage that can be applied continuously.
Clamping Voltage
The maximum voltage between two terminals with the specified
standard impulse current (8/20 μs).
Rated Power
The maximum power that can be applied within the specified To meet the
ambient temperature.
specified value.
Energy
The maximum energy within the varistor voltage change of ±10 %
when one impulse of 2 ms is applied.
Maximum
Peak Current
The maximum current within the varistor voltage change of ±10 %
2 times with the standard impulse current (8/20 μs) applied two times with
an interval of 5 minutes.
1 time
The maximum current within the varistor voltage change of ±10 %
with the standard impulse current (8/20 μs) applied one time.
Temperature Coefficient VC at 70 °C – VC at 20 °C × 1 × 100 (%/°C)
of Varistor Voltage
VC at 20 °C
50
Impulse Life
0 to –0.05 %/°C max.
The change of Vc shall be measured after the impulse listed
below is applied 10000 times continuously with the interval of ten
seconds at room temperature.
ΔV1 mA /V1 mA < ±10 %
20 Series
32 Series
200 A (8/20 μs)
300 A (8/20 μs)
Mechanical
Withstanding Voltage The commercial frequency voltage of AC 2.5 kV shall be applied No remarkable
between terminals and the bottom of the unit for one minute.
damage
(Body Insulation)
Robustness of
Terminations
(Tensile)
After gradually applying the load of 49 N (5 kgf) and keeping the
unit fixed for 10 seconds in an axial direction, the terminal shall
be visually examined for any damage.
Vibration
After repeadly applying a single harmonic vibration (amplitude: No remarkable
0.75 mm): double amplitude: 1.5 mm with 1 minute vibration damage
frequency cycles (10 Hz to 55 Hz to 10 Hz) to each of three
perpendicular directions for 2 hours. Thereafter, the damage of
the terminals is visually examined.
Environmental
Dry Heat/ High
Temperature
Storage
The specimen shall be subjected to 110±3 °C for 500 hours
in a thermostatic bath without load and then stored at room
temperature and humidity for one to two hours. Thereafter, the
change of Vc shall be measured.
Step
1
2
3
4
Temperature (°C)
0
–25 –3
Room Temp.
85+30
Room Temp.
Period (minutes)
30+30
3 max.
30+30
3 max.
ΔV1 mA /V1 mA < ±5 %
Temperature Cycle
The temperature cycle shown below shall be repeated five No remarkable
times and then stored at room temperature and humidity for damage
one to two hours. The change of Vc and mechanical damage ΔV1 mA /V1 mA ±5 %
<
shall be examined.
Dry Heat Load/
High Temperature
Load
After being continuously applied the Maximum Allowable Voltage
at 85±5 °C for 500 hours, the specimen shall be stored at room ΔV1 mA 1 mA
/V
< ±10 %
temperature and humidity for one to two hours. Thereafter, the
change of Vc shall be measured.
The specimen shall be subjected to 40±2 °C, 90 to 95 %RH for
Damp Heat/Humidity 1000 hours without load and then stored at room temperature ΔV1 mA 1 mA ±5 %
/V
<
(Steady State)
and humidity for one to two hours. Thereafter, the change of Vc
shall be measured.
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.
01 Aug. 2012
– 48 –
