EPCOS B57421V2103 Smd ntc thermistors with nickel barrier termination, size 0805 Datasheet

Temperature Measurement
B574**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0805
Applications
V 4**
1,3 max.*)
1,25±0,15
■ Temperature measurement and compensation in
0,5±0,25
2,0±0,2
– mobile phone applications
(e.g. battery pack, TCXO, LCD)
– data systems
– automotive electronics
Features
■ Multilayer SMD NTC with inner electrodes
■ Ni barrier termination (AgNiSn)
■ High accuracy: ± 5 % in resistance,
Termination
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 %)
TNT0421-1-E
* Slimline version 0,9 max.
* available upon request
Dimensions in mm
Approx. weight 13 mg
Options
Alternative resistance ratings, resistance tol. < 5 % and B value tol. < 3 % available on request
Delivery mode
Blister tape, 180-mm reel, PU: 3000 pcs (standard); 330-mm reel, PU: 12000 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
210
± 5 %, ± 10 %
25
±3%
approx. 3,5
approx. 10,0
approx. 35,0
mW
°C
mW/K
s
mJ/K
No. of R/T
characteristic
B 25/50
K
K
K
47
8501
3470
3540
3550
B57411V2470+062
100
8501
3470
3540
3550
B57411V2101+062
150
8501
3470
3540
3550
B57411V2151+062
220
8501
3470
3540
3550
B57411V2221+062
330
8501
3470
3540
3550
B57411V2331+062
R 25
Ω
B25/85
1) Depends on mounting situation
53
05/02
B 25/100
Ordering code
Temperature Measurement
B574**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0805
R 25
B25/85
B 25/100
V 4**
Ordering code
No. of R/T
characteristic
B 25/50
K
K
K
470
8502
3940
3980
4000
680
8502
3940
3980
4000
B57421V2681+062
1,0 k
8502
3940
3980
4000
B57421V2102+062
1,5 k
8502
3940
3980
4000
B57421V2152+062
8502
3940
3980
4000
B57421V2103+062
2,2 k
8503
4390
4470
4500
B57431V2222+062
3,3 k
8503
4390
4470
4500
B57431V2332+062
4,7 k
8503
4390
4470
4500
B57431V2472+062
6,8 k
8503
4390
4470
4500
B57431V2682+062
10 k
8503
4390
4470
4500
B57431V2103+062
15 k
8503
4390
4470
4500
B57431V2153+062
22 k
8503
4390
4470
4500
B57431V2223+062
33 k
8503
4390
4470
4500
B57431V2333+062
47 k
8503
4390
4470
4500
B57431V2473+062
68 k
8503
4390
4470
4500
B57431V2683+062
100 k
8503
4390
4470
4500
B57431V2104+062
Ω
10 k
+: J for ∆RN/RN = ± 5 %
K for ∆RN/RN = ± 10 %
54
05/02
B57421V2471+062
Temperature Measurement
B574**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0805
V 4**
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: 210 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
55
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.
Fragen über Technik, Preise und Liefermöglichkeiten richten Sie bitte an den Ihnen nächstgelegenen Vertrieb der EPCOS AG
oder an unsere Vertriebsgesellschaften im Ausland. Bauelemente können aufgrund technischer Erfordernisse Gefahrstoffe enthalten. Auskünfte darüber bitten wir unter Angabe des betreffenden Typs ebenfalls über die zuständige Vertriebsgesellschaft einzuholen.
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
also contact one of our Sales Offices.
Similar pages