ThermoFuse Varistor
Series/Type:
Ordering code:
NT20*
B72220***
Date:
Version:
2017-05-15
a
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Ordering code: (top right header bar)
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ThermoFuse Varistor
B72220***
NT20*
PPD VAR PD
2017-05-15
a
Rongguang Zhang
Dr. Wen Yang
Mac Gao
Levi Li
New issue
EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
ThermoFuse Varistor
B72220***
NT20*
Construction
Round varistor element, leaded
Coating: epoxy resin, flame-retardant to UL 94 V-0
Terminals: tinned copper wire, metal compound wire
Features
Wide operating voltage range 130 … 750VRMS
Self-protected under abnormal overvoltage conditions
High-energy AdvanceD series E2
Applications
Inverters in solar power systems Houshold appliances
Power supply units
Inverters in solar power systems
Lighting applications
Communication and data systems
Transient voltage surge suppressors (TVSS)
Electronic metering
General technical data
Climatic category
Operating temperature
Storage temperature
Electric strength
Insulation resistance
Response time
to IEC 60068-1
40/85/56
-40…+85
-40... +85
≥2.5
≥100
< 25
°C
°C
kVRMS
MΩ
Ω
ns
Nomenclature
NT
20
=
=
Series designation
Rated disk diameter (mm)
K
***
E2
S5
K4
=
=
=
=
=
Tolerance of VV at 1 mA: ±10%
Max. AC voltage
Energy absorption characteristics, AdvanceD series
Crimp design S5
2 pins version
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 2 of 16
ThermoFuse Varistor
Dimensional drawing in mm
Straight leads
B72220***
NT20*
Crimp leads
NT20K***K4
*K4
*S5K4
Typical applications
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 3 of 16
ThermoFuse Varistor
B72220***
NT20*
Dimension
Ordering code
Type
(untaped)
-SIOV
B72220W2131K101
NT20K130E2
B72220R2131K101
NT20K130E2K4
B72220W2141K101
NT20K140E2
B72220R2141K101
NT20K140E2K4
B72220W2151K101
NT20K150E2
B72220R2151K101
NT20K150E2K4
B72220W2171K101
NT20K175E2
B72220R2171K101
NT20K175E2K4
B72220W2211K101
NT20K210E2
B72220R2211K101
NT20K210E2K4
B72220W2251K101
NT20K250E2
B72220R2251K101
NT20K250E2K4
B72220W2271K101
NT20K275E2
B72220R2271K101
NT20K275E2K4
B72220W2301K101
NT20K300E2
B72220R2301K101
NT20K300E2K4
B72220W2321K101
NT20K320E2
B72220R2321K101
NT20K320E2K4
B72220W2351K101
NT20K350E2
B72220R2351K101
NT20K350E2K4
B72220W2381K101
NT20K385E2
B72220R2381K101
NT20K385E2K4
B72220W2421K101
NT20K420E2
B72220R2421K101
NT20K420E2K4
B72220W2461K101
NT20K460E2
B72220R2461K101
NT20K460E2K4
B72220W2511K101
NT20K510E2
B72220R2511K101
NT20K510E2K4
B72220W2551K101
NT20K550E2
B72220R2551K101
NT20K550E2K4
B72220W2621K101
NT20K625E2
B72220R2621K101
NT20K625E2K4
B72220W2681K101
NT20K680E2
B72220R2681K101
NT20K680E2K4
B72220W2751K101
NT20K750E2
B72220R2751K101
NT20K750E2K4
bmax
hmax
smax
e
±1
e1
±1
e2
±1
e3
±1
Lmin
L1min
mm
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
mm
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
mm
mm
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
mm
2.6
2.6
2.7
2.7
2.8
2.8
2.8
2.8
2.9
2.9
3.1
3.1
3.2
3.2
3.3
3.3
3.5
3.5
3.7
3.7
4.0
4.0
4.2
4.2
4.4
4.4
4.5
4.5
4.7
4.7
5.0
5.0
5.5
5.5
6.0
6.0
mm
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
mm
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
mm
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
mm
6
/
6
/
6
/
6
/
6
/
6
/
6
6
/
6
/
6
/
6
/
6
/
6
/
6
6
/
6
/
6
/
6
/
6
/
9.0
9.5
11.0
12.0
13.0
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
φd
±
0.05
mm
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
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
φd1
±
0.05
mm
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
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
0.8
0.8
0.8
0.8
2017-05-15
Page 4 of 16
ThermoFuse Varistor
Ordering code
Type
(untaped)
-SIOV
B72220W2131K501
NT20K130E2S5
B72220R2131K501
NT20K130E2S5K4
B72220W2141K501
NT20K140E2S5
B72220R2141K501
NT20K140E2S5K4
B72220W2151K501
NT20K150E2S5
B72220R2151K501
NT20K150E2S5K4
B72220W2171K501
NT20K175E2S5
B72220R2171K501
NT20K175E2S5K4
B72220W2211K501
NT20K210E2S5
B72220R2211K501
NT20K210E2S5K4
B72220W2251K501
NT20K250E2S5
B72220R2251K501
NT20K250E2S5K4
B72220W2271K501
NT20K275E2S5
B72220R2271K501
NT20K275E2S5K4
B72220W2301K501
NT20K300E2S5
B72220R2301K501
NT20K300E2S5K4
B72220W2321K501
NT20K320E2S5
B72220R2321K501
NT20K320E2S5K4
B72220W2351K501
NT20K350E2S5
B72220R2351K501
NT20K350E2S5K4
B72220W2381K501
NT20K385E2S5
B72220R2381K501
NT20K385E2S5K4
B72220W2421K501
NT20K420E2S5
B72220R2421K501
NT20K420E2S5K4
B72220W2461K501
NT20K460E2S5
B72220R2461K501
NT20K460E2S5K4
B72220W2511K501
NT20K510E2S5
B72220R2511K501
NT20K510E2S5K4
B72220W2551K501
NT20K550E2S5
B72220R2551K501
NT20K550E2S5K4
B72220W2621K501
NT20K625E2S5
B72220R2621K501
NT20K625E2S5K4
B72220W2681K501
NT20K680E2S5
B72220R2681K501
NT20K680E2S5K4
B72220W2751K501
NT20K750E2S5
B72220R2751K501
NT20K750E2S5K4
B72220***
NT20*
bmax
hmax
smax
e
±1
e1
±1
e2
±1
e3
±1
Lmin
L1min
mm
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
mm
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
mm
mm
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
mm
2.6
2.6
2.7
2.7
2.8
2.8
2.8
2.8
2.9
2.9
3.1
3.1
3.2
3.2
3.3
3.3
3.5
3.5
3.7
3.7
4.0
4.0
4.2
4.2
4.4
4.4
4.5
4.5
4.7
4.7
5.0
5.0
5.5
5.5
6.0
6.0
mm
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
5
/
mm
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
1
/
mm
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
mm
6
/
6
/
6
/
6
/
6
/
6
/
6
6
/
6
/
6
/
6
/
6
/
6
/
6
6
/
6
/
6
/
6
/
6
/
9.0
9.5
11.0
12.0
13.0
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
φd
±
0.05
mm
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
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
φd1
±
0.05
mm
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
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
0.8
0.8
0.8
0.8
2017-05-15
Page 5 of 16
ThermoFuse Varistor
B72220***
NT20*
Electrical data
Maximum ratings (85 °C):
Type
(untaped)
-SIOV
NT20K130E2*
NT20K140E2*
NT20K150E2*
NT20K175E2*
NT20K210E2*
NT20K250E2*
NT20K275E2*
NT20K300E2*
NT20K320E2*
NT20K350E2*
NT20K385E2*
NT20K420E2*
NT20K460E2*
NT20K510E2*
NT20K550E2*
NT20K625E2*
NT20K680E2*
NT20K750E2*
VRMS
VDC
imax
(8/20 µs)
V
130
140
150
175
210
250
275
300
320
350
385
420
460
510
550
625
680
750
V
170
180
200
225
270
320
350
385
420
460
505
560
615
670
745
825
895
1060
A
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
1)
In
(8/20 µs)
15 times
A
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
3000
W max
(2 ms)
Pmax
J
100
110
120
135
160
195
215
250
273
200
273
273
300
325
360
400
440
480
W
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
*May be suffix S5, K4
th
1) Note: nominal discharge current is the specification defined in UL1449 4 and tested with 8/20µs current waveform.
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 6 of 16
ThermoFuse Varistor
B72220***
NT20*
Characteristics (25 °C):
VV
(1 mA)
V
△Vv
(1 mA )
%
Vc,max
ic
V
ic
NT20K130E2*
205
10
340
100
NT20K140E2*
220
10
360
100
NT20K150E2*
240
10
395
100
Type
NT20K175E2*
270
10
455
100
NT20K210E2*
330
10
545
100
NT20K250E2*
390
10
650
100
NT20K275E2*
430
10
710
100
NT20K300E2*
470
10
775
100
Ctyp
1 kHz
pF
1850
1700
1550
1350
1100
940
850
780
NT20K320E2*
510
10
840
100
720
NT20K350E2*
560
10
910
100
660
NT20K385E2*
620
10
1025
100
600
NT20K420E2*
680
10
1120
100
550
NT20K460E2*
750
10
1240
100
500
NT20K510E2*
820
10
1355
100
460
NT20K550E2*
910
10
1500
100
410
NT20K625E2*
1000
10
1650
100
380
NT20K680E2*
1100
10
1815
100
340
NT20K750E2*
1200
10
2000
100
250
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
A
2017-05-15
Page 7 of 16
ThermoFuse Varistor
B72220***
NT20*
Reliability Data Electrical
Test
Test methods
Requirement
Varistor
voltage
The voltage between two terminals with the specified
measuring current applied is called Vv (1 mADC @ 0.2 … 2
s).
To meet the specified
value.
Clamping
voltage
The maximum voltage between two terminals with the
specified standard impulse current (8/20 µs) illustrated
below applied.
To meet the specified
value.
Peak
Leading
Edge
Trailing Edge
TS
Tr
O1
Im
Rise Time µs
Decay time to half value µs
Nominal start
Peak value
Surge current
derating,
8/20 µs
10 surge currents (8/20 µs), unipolar, interval 30 s,
amplitude corresponding to derating curve for 10 impulses
at 20 µs
|V/V (1 mA)| ≤10%
(measured in direction
of surge current)
No visible damage
Surge current
derating,
2 ms
10 surge currents (2ms), unipolar, interval 120s, amplitude
corresponding to derating curve for 10 impulses at 2 ms
|V/V (1 mA)|≤10%
(measured in direction
of surge current)
No visible damage
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 8 of 16
ThermoFuse Varistor
B72220***
NT20*
Test
Test Methods/Description
Requirement
Abnormal over
voltage
This device is designed to form open circuit in the event of
overheating due to the limited current abnormal over voltage
th
conditions as outlined in section 44.4 of UL1449 4 edition.
The device (pin 1 & 3) is to be connected to a power supply
having an open circuit voltage equal to the test voltage
specified below. The power supply is to incorporate a series
variable resistor that can be adjusted to obtain the short-circuit
current (Isc). The variable resistor is to be adjusted such that
Isc equals 5A, 2.5A, 0.5A or 0.125A respectively (measured
without the device in the circuit). The device will be energized
for 7 hours, or until the device becomes disconnected from the
power supply, or until current to, or temperature within the
3)
device attains equilibrium .
The test result will be visually inspected.
Detailed test voltages applied onto the devices are as in the
following table:
Any of below
phenomena shall not
be observed,
otherwise this device
will be judged as
failed part:
1. Emission of flame,
molten metal, glowing
or flaming particles
through any openings
(pre-existed or created
as a result of the test)
in the device.
2. Charring, glowing, or
flaming of the
supporting surface, or
cheesecloth draped on
the device.
3. Ignition of the
enclosure.
4. Creation of any
openings in the
enclosure that result in
accessibility of live
parts.
Type
Device rating
Test voltage
( V ac)
( V ac )
NT20K130E2*
130
240
NT20K140E2*
140
240
NT20K150E2*
150
240
NT20K175E2*
175
240
NT20K210E2*
210
240
NT20K250E2*
250
480
NT20K275E2*
275
480
NT20K300E2*
300
480
NT20K320E2*
320
480
NT20K350E2*
350
600
NT20K385E2*
385
600
NT20K420E2*
420
690
NT20K460E2*
460
690
NT20K510E2*
510
1000
NT20K550E2*
550
1000
NT20K625E2*
625
1000
NT20K680E2*
680
1000
NT20K750E2*
750
1000
Note:
3) Thermal fuse may not form open circuit under low current [e.g. 0.125A] due to less heat generated by MOV, however the
device will reach thermal equilibrium within 30 minutes under a low temperature which will not be able to cause any
damage to the device.
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 9 of 16
ThermoFuse Varistor
B72220***
NT20*
v/i characteristic
A = Leakage current, B = Protection level } for worst-case varistor tolerances
A
B
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 10 of 16
ThermoFuse Varistor
B72220***
NT20*
Derating curves
Suitable for 130 -320
NT20K130…320E2
100000
imax.
tr
10000
1x
2x
15 x
10^2 x
10^3 x
10^4 x
10^5 x
10^6 x
inf.
I max [A]
1000
100
10
1
0.1
10
100
1000
10000
t r [μs]
Suitable for 350 -680
NT20K350…680E2
100000
imax.
tr
10000
1x
2x
15 x
10^2 x
10^3 x
10^4 x
10^5 x
10^6 x
inf.
I max [A]
1000
100
10
1
0.1
10
100
1000
10000
t r [μs]
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 11 of 16
ThermoFuse Varistor
B72220***
NT20*
Suitable for 750
NT20K750E2
100000
imax.
tr
10000
1x
2x
15 x
I max [A]
1000
10^2 x
10^3 x
10^4 x
10^5 x
10^6 x
inf.
100
10
1
0.1
10
100
1000
10000
t r [μs]
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 12 of 16
ThermoFuse Varistor
B72220***
NT20*
1 Soldering instructions only for NT series
1.1 Manual soldering
Maximum soldering temperature 350 °C for 3 s. It is recommended to heat sink the lead wires of
the ThermoFuse varistors (NT series).
1.2 Wave soldering
Recommended temperature profile for wave soldering only for ThermoFuse varistors (NT series).
Important note: Temperatures of all preheat stages and the solder bath must be strictly controlled.
Housed vas T20 series
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2017-05-15
Page 13 of 16
ThermoFuse Varistor
B72220***
NT20*
Cautions and warnings
General
1.
EPCOS metal oxide varistors (SIOVs) are designed for specific applications and should not be used for
purposes not identified in our specifications, application notes and data books unless otherwise agreed with
EPCOS during the design-in-phase.
2.
Ensure suitability of SIOVs through reliability testing during the design-in phase. The SIOVs should be
evaluated taking into consideration worst-case conditions.
3.
For applications of SIOVs in line-to ground circuits based on various international and local standards there
are restrictions existing or additional safety measures required.
Storage
1.
Store SIOVs only in original packaging. Do not open the package before storage.
2.
Storage conditions in original packaging:
Storage temperature:
Relative humidity:
Dew precipitation:
-25 °C … +45 °C
很抱歉,暂时无法提供与“B72220R2131K101”相匹配的价格&库存,您可以联系我们找货
免费人工找货- 国内价格
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- 100+21.24300
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