ENF221D05A Datasheet, PDF (1/7 Pages) Fuji Electric – 220 TO 680V (VARISTOR VOLTAGE)

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FUJI Ceramic Surge Absorbers
Z-TRAP
ENF series
220 to 680V (Varistor voltage)
Features
· Flame-resistant
Suppress combustion and smoking after a malfunction caused by larger
surge than the specified value
· Environment-friendly materials
Adopts newly developed halogen-free resin mold and the Pb-free plated
lead wires
· High reliability
Greatly improved heat-cycle resistance
· Small size and high performance
· Ratings and specifications are same as the conventional ENE series.
Ratings and characteristics
Device
type
Maximum rating
Applied voltage *¹ Transient
RMS
DC
Energy *² Average Peak *³
50Hz/60Hz
power current
dissipation (8/20µs)
Vacm Vdcm
[Volts] [Volts]
Wtm
Ptam
[Joules] [Watts]
Itm
[Amps]
Characteristics
Nominal varistor voltage *⁴
Vnom
[Volts]
Tolerance
Min. Max
[Volts] [Volts]
Max. clamping *⁵
voltage @test
current
(8/20µs)
Typical
capaci-
tance
Vc
[Volts]
Ip
f=1kHz
[Amps] [pF]
ENF221D05A 140 180
6.5
0.1
700 220 198 242
380
ENF221D07A
13.5
0.25
1350
360
ENF221D10A
28.0
0.4
2750
360
ENF221D14A
55.0
0.6
5500
360
ENF241D05A 150 200
7.5
0.1
700 240 216 264
415
ENF241D07A
15.0
0.25
1350
395
ENF241D10A
30.0
0.4
2750
395
ENF241D14A
60.0
0.6
5500
395
ENF271D05A 175 225
8.0
0.1
700 270 247 303
475
ENF271D07A
17.0
0.25
1350
455
ENF271D10A
35.0
0.4
2750
455
ENF271D14A
70.0
0.6
5500
455
ENF471D05A 300 385 15.0
0.1
700 470 423 517
810
ENF471D07A
30.0
0.25
1350
775
ENF471D10A
60.0
0.4
2750
775
ENF471D14A
125.0
0.6
5500
775
ENF511D10A 320 410 67.0
0.4
2500 510 459 561
845
ENF511D14A
136.0
0.6
4500
845
ENF621D10A 385 505 67.0
0.4
2500 620 558 682 1025
ENF621D14A
136.0
0.6
4500
1025
ENF681D10A 420 560 67.0
0.4
2500 680 612 748 1120
ENF681D14A
136.0
0.6
4500
1120
5
170
10
350
25
700
50 1400
5
170
10
350
25
700
50 1300
5
150
10
300
25
600
50 1200
5
80
10
170
25
350
50
700
25
300
50
650
25
270
50
550
25
250
50
500
Operating ambient temperature: -40°C to +85°C
Storage temperature: -40°C to +125°C
*¹ The waveform of the maximum DC applied voltage is flat.
When a ripple voltage as from a rectifier source is applied, make
sure that the peak voltage is within the Vdcm rating.
The AC applied voltage (50/60Hz) is a sine waveform.
When waveform distortion is extensive, make sure that the peak
voltage is less than 2 times the Vacm rating.
*² Energy Wtm
Transient energy rating are given in the Wtm column in Joules (Watt-
second). The rating is the maximum allowable energy of a single 2ms
square-waveform impulse current continuously applied.
Energy ratings are based on a shift of Vnom of less than ±10% of
the initial value.
*³ Transient peak current (Itm)
The peak current rating, Itm, is based on 8/20µs test impulse wave
form. This peak current is the maximum peak current at which the
nominal varistor voltage shift dose not exceed ±10% when the test
impulse is applied twice at a 5 minute interval.
*⁴ Nominal varistor voltage: Vnom
Indicates the varistor terminal voltage measured with 1mA DC
applied. 05A type 0.1mA DC
*⁵ Maximum clamping voltage: Vc
Indicates the peak terminal voltage measured with 8/20µs impulse
current applied.
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