EPCOS B57321V2681+060

Temperature Measurement
B573**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0603
Applications
V 3**
0,8±0,15
0,9 max.
■ Temperature measurement and compensation in
0,35±0,15
1,6±0,15
– mobile phone applications
(e.g. battery pack, TCXO, LCD)
– data systems
– automotive electronics
Features
■ Multilayer SMD NTC with inner electrodes
■ Ni barrier termination (Ag/Ni/Sn)
■ High accuracy: ± 5 % in resistance,
Termination
TNT0396-Y
Dimensions in mm
Approx. weight 6 mg
B value tolerance down to ± 1,5 % available on request
■ Excellent long-term ageing stability in high-temperature
and high-humidity environment
■ Superior resistance stability during soldering (change < 1 %)
Options
Alternative resistance ratings, resistance tol. < 5 % and B value tol. < 3 % available on request
Delivery mode
Cardboard tape, 180-mm reel, PU: 4000 pcs (standard); 330-mm reel, PU: 16000 pcs (on request)
Climatic category (IEC 60068-1)
Max. power at 25 °C (on PCB)
Resistance tolerance
Rated temperature
B value tolerance
Dissipation factor (on PCB)
Thermal cooling time constant (on PCB)
Heat capacity
P251)
∆R N/R N
TN
∆B/B
δth1)
τc1)
Cth1)
55/125/56
180
± 5 %, ± 10 %
25
±3%
approx. 3,0
approx. 4,0
approx. 12,0
mW
°C
mW/K
s
mJ/K
No. of R/T
characteristic
B 25/50
K
K
K
47
8501
3470
3540
3550
B57311V2470+060
100
8501
3470
3540
3550
B57311V2101+060
150
8501
3470
3540
3550
B57311V2151+060
220
8501
3470
3540
3550
B57311V2221+060
330
8501
3470
3540
3550
B57311V2331+060
470
8502
3940
3980
4000
B57321V2471+060
680
8502
3940
3980
4000
B57321V2681+060
1,0 k
8502
3940
3980
4000
B57321V2102+060
1,5 k
8502
3940
3980
4000
B57321V2152+060
8502
3940
3980
4000
B57321V2103+060
R 25
Ω
10 k
B25/85
1) Depends on mounting situation
50
05/02
B 25/100
Ordering code
Temperature Measurement
B573**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0603
R 25
B25/85
B 25/100
V 3**
Ordering code
No. of R/T
characteristic
B 25/50
K
K
K
2,2 k
8503
4390
4470
4500
B57331V2222+060
3,3 k
8503
4390
4470
4500
B57331V2332+060
4,7 k
8503
4390
4470
4500
B57331V2472+060
6,8 k
8503
4390
4470
4500
B57331V2682+060
10 k
8503
4390
4470
4500
B57331V2103+060
15 k
8503
4390
4470
4500
B57331V2153+060
22 k
8503
4390
4470
4500
B57331V2223+060
33 k
8503
4390
4470
4500
B57331V2333+060
47 k
8503
4390
4470
4500
B57331V2473+060
68 k
8503
4390
4470
4500
B57331V2683+060
100 k
8503
4390
4470
4500
B57331V2104+060
Ω
+: J for ∆RN/RN = ± 5 %
K for ∆RN/RN = ± 10 %
51
05/02
Temperature Measurement
B573**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0603
V 3**
Reliability data
SMD NTC thermistors are tested in accordance with IEC 60068. The parts are mounted on a
standardized PCB in accordance with IEC 60539-1.
Test
Standard
Test conditions
∆R25/R 25
(typical)
Storage in
dry heat
IEC
60068-2-2
JIS C 0021
Storage at upper
category temperature
T: (125 ± 2) °C
t: 1000 h
<2%
Storage in damp
heat, steady state
IEC
60068-2-3
JIS C 0022
Temperature of air: (40 ± 2) °C
Relative humidity of air:
(93 +2/–3) %
Duration: 56 days
<2%
Rapid temperature
cycling
IEC
60068-2-14
JIS C 0025
Lower test temperature: – 55 °C < 2 %
Upper test temperature: 125 °C
Number of cycles: 100
Solderability
<2%
Pmax: 180 mW
T: (65 ± 2) °C
t: 1000 h
Endurance
IEC
60068-2-58
JIS C 0054
Solderability:
(215 ± 3) °C / (3 ± 0,3) s
(235 ± 5) °C / (2 ± 0,2) s
95 % of
terminations
wetted
Resistance to soldering heat:
(260 ± 5) °C / (10 ± 1) s
Resistance drift
after soldering
Reflow soldering profile
Wave soldering profile
52
Remarks
05/02
<1%
Herausgegeben von EPCOS AG
Unternehmenskommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
++49 89 636 09, FAX (0 89) 636-2 26 89
(
 EPCOS AG 2002. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne ausdrückliche Genehmigung der EPCOS AG nicht gestattet.
Bestellungen unterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen der Elektroindustrie, soweit nichts anderes vereinbart wird.
Diese Broschüre ersetzt die vorige Ausgabe.
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Published by EPCOS AG
Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
++49 89 636 09, FAX (0 89) 636-2 26 89
(
 EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without
EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics
Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on the type in question please
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