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| Inrush Current Limiters B57237 S 237 Applications I Switch-mode power supplies I Soft-start motors, e.g. in vacuum cleaners Features I I I I I Useable in series connections up to 265 Vrms Coated thermistor disk Kinked leads of tinned copper wire Wide resistance range UL approval (E69802) Options Resistance tolerance < 20 % available on request Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack Dimensions in mm Approx. weight 2 g Climatic category (IEC 60068-1) Max. power at 25 C Resistance tolerance Rated temperature B value tolerance Dissipation factor (in air) Thermal cooling time constant (in air) Heat capacity Pmax R N/R N TN B/B th c Cth 55/170/56 3,1 20 % 25 3% approx. 17 approx. 90 approx. 1530 W C mW/K s mJ/K R 25 1,0 2,2 2,5 4,7 5,0 7,0 10 15 22 33 Imax (25 C) A 9,0 7,0 6,5 5,1 5,0 4,2 3,7 3,0 2,8 2,5 No. of R/T characteristic 1201 1202 1202 1203 1203 1302 1308 1302 1304 1304 B25/100 K 2700 2800 2800 2900 2900 3060 3060 3000 3300 3300 CT1) C T1) Parameters for 230 V 110 V R(I) 1) F F k n 700 700 700 700 700 700 700 700 700 900 2800 2800 2800 2800 2800 2800 2800 2800 2800 3600 0,622 0,806 0,843 1,03 1,05 1,16 1,29 1,49 1,57 1,78 - 1,27 - 1,30 - 1,30 - 1,32 - 1,32 - 1,33 - 1,34 - 1,33 - 1,37 - 1,37 Ordering code B57237S0109M000 B57237S0229M000 B57237S0259M000 B57237S0479M000 B57237S0509M000 B57237S0709M000 B57237S0100M000 B57237S0150M000 B57237S0220M000 B57237S0330M000 1) For details on the capacitance CT as well as on the parameters k and n refer to "Application Notes", pages 40 - 42. 136 05/02 Inrush Current Limiters B57237 S 237 Reliability data Test Storage in dry heat Standard IEC 60068-2-2 Test conditions Storage at upper category temperature T: 170 C t: 1000 h Temperature of air: 40 C Relative humidity of air: 93 % Duration: 21 days R 25/R25 (typical) < 10 % Remarks No visible damage Storage in damp heat, steady state Rapid temperature cycling Endurance Cyclic endurance Transient load IEC 60068-2-3 IEC 60068-2-14 <5% No visible damage No visible damage No visible damage No visible damage No visible damage Lower test temperature: - 55 C < 10 % Upper test temperature: 170 C Number of cycles: 10 I = Imax t: 1000 h I = Imax, 1000 cycles On-time = 1 min Cooling time = 6 min Capacitance = C T Number of cycles: 1000 < 10 % < 10 % <5% 137 05/02 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. ( |
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