NTC thermistors for inrush current limiting Leaded and coated disks, P11 series Series/Type: B57211P0***M3*1 Date: November 2015 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 B57211P0***M3*1 ICLs P11 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) CQC (0900104539) Dimensions in mm Options Approx. weight 1.2 g 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) 40/170/21 Max. power (at 25 C) P 3.0 W max Resistance tolerance R /R 20 % R R Rated temperature T 25 C R Dissipation factor (in air) approx. 13 mW/K th Thermal cooling time constant (in air) approx. 70 s c Heat capacity C approx. 910 mJ/K th Please read Cautions and warnings and Page 2 of 21 Important notes at the end of this document.