NTC thermistors for inrush current limiting Leaded and coated disks Series/Type: B57238S0***M0** Date: October 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) Options Resistance tolerance <20% and alternative lead Dimensions in mm configurations available on request Approx. weight 3 g 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 Please read Cautions and warnings and Page 2 of 20 Important notes at the end of this document.