B57238S479M51 TDK

NTC thermistors for inrush current limiting Leaded and coated disks Series/Type: B57238S0***M0** Date: May 2013 EPCOS AG 2015. 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.Inrush current limiters B57238S0***M0** ICLs S238 Applications Dimensional drawing Switch-mode power supplies Soft-start motors, e.g. in vacuum cleaners Features Useable in series connections up to 265 V RMS Coated thermistor disk for line applications Kinked leads of tinned copper wire Wide resistance range Manufacturer's logo, NTC and resistance value stamped on UL approval (E69802) Dimensions in mm Approx. weight 3 g Options Resistance tolerance <20% and alternative lead configurations available on request Delivery mode Bulk (standard) or with cardboard tape on 500-mm reel General technical data Climatic category (IEC 60068-1) 55/170/21 Max. power (at 25 C) P 3.9 W max Resistance tolerance R /R 20 % R R Rated temperature T 25 C R Dissipation factor (in air) approx. 20 mW/K th Thermal cooling time constant (in air) approx. 80 s c Heat capacity C approx. 1600 mJ/K th Electrical specification and ordering codes 1) 1) R R I C C min Ordering code 25 max test test (@ I , 25 C) (0...65 C) 230 V AC 110 V AC max A F F 2.5 8.4 700 2800 0.054 B57238S0259M0** 3 7.4 700 2800 0.068 B57238S0309M0** 4.7 6.6 700 2800 0.090 B57238S0479M0** 5 6.4 700 2800 0.097 B57238S0509M0** 7 6.0 700 2800 0.113 B57238S0709M0** 8 5.5 700 2800 0.131 B57238S0809M0** ** = Delivery mode 00 = Bulk 51 = Reel packing 1) For details on the capacitance C please refer toApplication note, chapter 1.6. test Please read Cautions and warnings and Page 2 of 20 Important notes at the end of this document.