Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
“ZNR” Transient/Surge Absorbers (Type E)
– 44 –
&
1
3
2
;
3456789 10 11 12
Product Code Element Size Type Design No.Nominal
Varistor Voltage
Tolerance
$&,
24
ISO
M4
L
W
12
H
ZNR
5
4.3
14
Part No.
Date code
“ZNR” Transient/Surge Absorbers
Type: E
■ Recommended Applications
● Transistor, diode, IC, thyristor or triac semi con duc tor
pro tec tion
● 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
Note: Ask our factory for Product Speci cation before
use.
■ Features
● 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
■ Dimensions in mm (not to scale)
Part No. W H L
ERZC20EK□□□□ 4 8 ±1 4 2±1 3 9 ±1
ERZC32EK□□□□ 6 0 ±1 5 5±1 51±1
■ Explanation of Part Numbers
The ZNR Type E is capable of handling larger surge
energy than Type D in applications to protect elec tron ic
equipment or semi con duc tor devices from switch ing and
induced light ning surg es.
■ 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 offi ce.
■ Handling Precautions and Minimum Quantity / Packing Unit
Please see Related Information
Aug. 201201
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
“ZNR” Transient/Surge Absorbers (Type E)
– 45 –
20 Series
■ Ratings and Characteristics (ERZC20EK)
● Operating Temperature Range : –40 to 85 °C
● Storage Temperature Range :
–40 to 110 °C
32 Series
■ Ratings and Characteristics (ERZC32EK)
● Operating Temperature Range : –40 to 85 °C
● Storage Temperature Range :
–40 to 110 °C
Part No.
Varistor
Voltage
Maximum
Allowable
Voltage
Maximum
Clamping
Voltage
Rated
Power
Energy
(2 ms)
Maximum
Peak Current
(8/20 μs)
Typical
Capacitance
(Reference)
1 time 2 times
V1 mA (V) ACrms (V) DC (V) V100 A (V) (W) (J) (A) (A) at 1kHz (pF)
ERZC20EK201
ERZC20EK241
ERZC20EK271
ERZC20EK361
ERZC20EK391
ERZC20EK431
ERZC20EK471
ERZC20EK511
ERZC20EK621
ERZC20EK681
ERZC20EK751
ERZC20EK781
ERZC20EK821
ERZC20EK911
ERZC20EK102
ERZC20EK112
200 (185 to 225)
240 (216 to 264)
270 (247 to 303)
360 (324 to 396)
390 (351 to 429)
430 (387 to 473)
470 (423 to 517)
510 (459 to 561)
620 (558 to 682)
680 (612 to 748)
750 (675 to 825)
780 (702 to 858)
820 (738 to 902)
910 (819 to 1001)
1000 (900 to 1100)
1100 (990 to 1210)
130
150
175
230
250
275
300
320
385
420
460
485
510
550
625
680
170
200
225
300
320
350
385
415
505
560
615
640
670
745
825
895
340
395
455
595
650
710
775
845
1025
1120
1240
1290
1355
1500
1650
1815
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
80
95
100
120
130
140
150
150
160
175
190
200
215
240
245
250
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
8000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
2300
1500
1400
1300
1200
1000
950
930
900
850
800
800
700
700
400
350
Part No.
Varistor
Voltage
Maximum
Allowable
Voltage
Maximum
Clamping
Voltage
Rated
Power
Energy
(2 ms)
Maximum
Peak Current
(8/20 μs)
Typical
Capacitance
(Reference)
1 time 2 times
V1 mA (V) ACrms (V) DC (V) V200 A (V) (W) (J) (A) (A) at 1kHz (pF)
ERZC32EK201
ERZC32EK241
ERZC32EK271
ERZC32EK361
ERZC32EK391
ERZC32EK431
ERZC32EK471
ERZC32EK511
ERZC32EK621
ERZC32EK681
ERZC32EK751
ERZC32EK781
ERZC32EK821
ERZC32EK911
ERZC32EK102
ERZC32EK112
200 (185 to 225)
240 (216 to 264)
270 (247 to 303)
360 (324 to 396)
390 (351 to 429)
430 (387 to 473)
470 (423 to 517)
510 (459 to 561)
620 (558 to 682)
680 (612 to 748)
750 (675 to 825)
780 (702 to 858)
820 (738 to 902)
910 (819 to 1001)
1000 (900 to 1100)
1100 (990 to 1210)
130
150
175
230
250
275
300
320
385
420
460
485
510
550
625
680
170
200
225
300
320
350
385
415
505
560
615
640
670
745
825
895
340
395
455
595
650
710
775
845
1025
1120
1240
1290
1355
1500
1650
1815
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
210
240
255
325
350
400
405
405
415
450
500
520
545
600
620
640
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
25000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
5500
5000
4200
3500
3000
2500
2500
2400
2200
2100
2000
1900
1800
1700
1000
800
Aug. 201201
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
“ZNR” Transient/Surge Absorbers (Type E)
– 46 –
Current (A)
Voltage (V)
2000
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
10-610-510-410-310-210-1100101102103104105
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
Test Current Waveform
10-6 to 10-3A: Direct Current
10-1to 104A: 8/20 μs
.BY$MBNQJOH7PMUBHF.BY-FBLBHF$VSSFOU
4000
3000
2000
1000
900
800
700
600
500
400
300
200
10-610-510-410-310-210-1100101102103104105
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
Current (A)
Voltage (V)
Test Current Waveform
10-6 to 10-3A: Direct Current
10-1to 104A: 8/20 μs
.BY$MBNQJOH7PMUBHF.BY-FBLBHF$VSSFOU
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
1
20 100 1000 10000
1 Time
2 Times
10 Times
102
Times
10
3
Times
10
4
Times
10
5
Times
10
6
Times
Impulse Width (μs)
Impulse Current (A)
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
1
20 100 1000 10000
1 Time
10
2
Times
10
3
Times
104
Times
10
5
Times
10
6
Times
2 Times
10 Times
Impulse Width (μs)
Impulse Current (A)
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
1
20 100 1000 10000
1
Time
10
2
Times
10
3
Times
10
4
Times
10
5
Times
10
6
Times
2
Times
10
Times
Impulse Width (μs)
Impulse Current (A)
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
■ Typical Characteristics ( Type E)
Voltage vs. Current
(ERZC20EK201 to ERZC20EK511)
(ERZC20EK621 to ERZC20EK112)
■ Impulse Derating Curve (Relation be tween impulse width and surge, repetitively)
20 Series 20 Series 20 Series
(ERZC20EK201 to ERZC20EK271) (ERZC20EK361 to ERZC20EK681) (ERZC20EK751 to ERZC20EK112)
Aug. 201201
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
“ZNR” Transient/Surge Absorbers (Type E)
– 47 –
2000
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
10-610-510-410-310-210-1100101102103104105
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
Current (A)
Voltage (V)
Test Current Waveform
10-6 to 10-3A: Direct Current
10-1to 104A: 8/20 μs
.BY$MBNQJOH7PMUBHF.BY-FBLBHF$VSSFOU
4000
3000
2000
1000
900
800
700
600
500
400
300
200
10-610-510-410-310-210-1100101102103104105
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
&3;$&,
Current
(
A
)
Voltage (V)
.BY$MBNQJOH7PMUBHF
.BY-FBLBHF$VSSFOU
Test Current Waveform
10-6 to 10-3A: Direct Current
10-1to 104A: 8/20 μs
20 100 1000
1
Time
2
Times
10
Times
10
2
Times
10
3
Times
10
4
Times
10
5
Times
106
Times
10000
20000
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
Impulse Width (μs)
Impulse Current (A)
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
Impulse Width (μs)
Impulse Current (A)
20 100 1000
1
Time
2
Times
10
Times
10
2
Times
10
3
Times
10
4
Times
10
5
Times
10
6
Times
10000
20000
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
20 100 1000
1
Time
2
Times
10
Times
10
2
Times
10
3
Times
10
4
Times
10
5
Times
10
6
Times
10000
20000
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
Impulse Width (μs)
Impulse Current (A)
5 minutes
2 minutes
10 seconds
2 times :
to 10 times :
to 106 times :
■ Typical Characteristics (Type E)
Voltage vs. Current
(ERZC32EK201 to ERZC32EK511)
(ERZC32EK621 to ERZC32EK112)
■ Impulse Derating Curve (Relation be tween impulse width and surge, repetitively)
32 Series 32 Series 32 Series
(ERZC32EK201 to ERZC32EK271) (ERZC32EK361 to ERZC32EK681) (ERZC32EK751 to ERZC32EK112)
Aug. 201201
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
“ZNR” Transient/Surge Absorbers (Type E)
– 48 –
■ Performance Characteristics (Type E)
Electrical
Characteristics Test Methods/Description Specifi cations
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.
To meet the
specifi ed value.
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
ambient temperature.
Energy The maximum energy within the varistor voltage change of ±10 %
when one impulse of 2 ms is applied.
Maximum
Peak Current
2 times
The maximum current within the varistor voltage change of ±10 %
with the standard impulse cur rent (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 cur rent (8/20
μs
) applied one time.
Temperature Coeffi cient
of Varistor Voltage
VC at 70 °C – V
C at 20 °C ×1×100 (%/°C)
VC at 20 °C 50
0 to –0.05 %/°C max.
Impulse Life
The change of Vc shall be measured after the impulse listed
below is applied 10000 times continuously with the interval of ten
sec onds at room temperature.
20 Series 200 A (8/20 μs)
32 Series 300 A (8/20 μs)
ΔV1 mA/V1 mA < ±10 %
Withstanding Voltage
(Body Insulation)
The commercial frequency voltage of AC 2.5 kV shall be applied
between terminals and the bottom of the unit for one minute.
No remarkable
damage
Mechanical
Robustness of
Terminations
(Tensile)
After gradually applying the load of 49 N (5 kgf) and keeping the
unit fi xed for 10 seconds in an axial direction, the terminal shall
be visually examined for any damage.
No remarkable
damage
Vibration
After repeadly applying a single harmonic vibration (amplitude:
0.75 mm): double amplitude: 1.5 mm with 1 minute vibration
frequency cycles (10 Hz to 55 Hz to 10 Hz) to each of three
perpendicular directions for 2 hours. Thereafter, the damage of
the ter mi nals 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 Temperature (°C) Period (minutes)
1–25
–3 30+3
2 Room Temp. 3 max.
385
+3 30+3
4 Room Temp. 3 max.
ΔV1 mA/V1 mA < ±5 %
Temperature Cycle
The temperature cycle shown below shall be repeated five
times and then stored at room temperature and humidity for
one to two hours. The change of Vc and mechanical damage
shall be examined.
No remarkable
damage
ΔV1 mA/V1 mA < ±5 %
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
temperature and humidity for one to two hours. Thereafter, the
change of Vc shall be measured.
ΔV1 mA/V1 mA < ±10 %
Damp Heat/Humidity
(Steady State)
The specimen shall be subjected to 40±2 °C, 90 to 95 %RH for
1000 hours without load and then stored at room temperature
and hu mid i ty for one to two hours. Thereafter, the change of Vc
shall be measured.
ΔV1 mA/V1 mA < ±5 %
0
0
0
0
Aug. 201201