B57238S0479M051 TDK

NTC thermistors for inrush current limiting Leaded and coated disks Series/Type: B57238S0***M0** Date: July 2019 TDK Electronics AG 2019. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without TDK Electronics' prior express consent is prohibited.Inrush current limiters B57238S0***M0** ICLs S238 Applications Dimensional drawing Inrush current limiting, e.g. in switch-mode power supplies, soft-start motors Features Leaded and coated NTC thermistors Tinned copper wire, kinked Coating material flame retardant to UL 94 V-0 Component marking includes the manufacturer's logo, resistance value and date code Highly stable electrical characteristics Approvals UL 1434 (file number E69802) IEC (certificate number 101QA12) VDE (certificate number 40038223) Dimensions in mm CQC (0900104539) Approx. weight 3 g Options Resistance tolerance <20% and alternative lead configurations available on request Delivery mode Bulk (standard), cardboard tape on reel or Ammo pack 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 21 Important notes at the end of this document.