Temperature Measurement B574** SMD NTC Thermistors with Nickel Barrier Termination, Size 0805 Applications V 4** 1,3 max.*) 1,250,15 Temperature measurement and compensation in 0,50,25 2,00,2 - 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 th1) c1) 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 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 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 Munchen, DEUTSCHLAND ++49 89 636 09, FAX (0 89) 636-2 26 89 ( EPCOS AG 2002. Vervielfaltigung, Veroffentlichung, Verbreitung und Verwertung dieser Broschure und ihres Inhalts ohne ausdruckliche Genehmigung der EPCOS AG nicht gestattet. Bestellungen unterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen fur Erzeugnisse und Leistungen der Elektroindustrie, soweit nichts anderes vereinbart wird. Diese Broschure ersetzt die vorige Ausgabe. Fragen uber Technik, Preise und Liefermoglichkeiten richten Sie bitte an den Ihnen nachstgelegenen Vertrieb der EPCOS AG oder an unsere Vertriebsgesellschaften im Ausland. Bauelemente konnen aufgrund technischer Erfordernisse Gefahrstoffe enthalten. Auskunfte daruber bitten wir unter Angabe des betreffenden Typs ebenfalls uber die zustandige 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.