NTC thermistors for inrush current limiting Leaded and coated disks Series/Type: B57236 Date: March 2006 EPCOS AG 2006. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited.Inrush current limiters B57236 ICLs S236 Applications Dimensional drawing Switch-mode power supplies Features Useable in series connections up to 265 V rms Coated thermistor disk Kinked leads of tinned copper wire Wide resistance range UL approval (E69802) Options Resistance tolerance <20% and alternative lead configurations available on request Delivery mode Dimensions in mm Bulk (standard), Approx. weight 1 g cardboard tape, reeled or in Ammo pack General technical data Climatic category (IEC 60068-1) 55/170/21 Max. power (at 25 C) P 2.1 W max Resistance tolerance R /R 20 % R R Rated temperature T 25 C R B value tolerance B/B 3 % Dissipation factor (in air) approx. 10 mW/K th Thermal cooling time constant (in air) approx. 70 s c Heat capacity C approx. 700 mJ/K th Electrical specification and ordering codes 1) 1) R I No. of B C C Param. Param. Ordering code 25 max 25/100 test test 1) 1) (0...65 C) R/T char- 230 V 110 V for R(I) for R(I) A acteristic K F F k n 2.5 5.5 1201 2700 200 800 0.621 1.27 B57236S0259M000 3 5.0 1201 2700 300 1200 0.804 1.34 B57236S0309M000 5 4.5 1202 2800 300 1200 0.761 1.30 B57236S0509M000 3.5 1203 2900 300 1.11 1.34 B57236S0809M000 8 1200 10 3.5 1203 2900 300 1200 0.942 1.32 B57236S0100M000 12 3.2 1203 2900 300 1200 1.00 1.32 B57236S0120M000 16 2.9 1207 2965 300 1200 1.08 1.33 B57236S0160M000 20 2.8 1208 3065 300 1200 1.13 1.34 B57236S0200M000 2.5 1208 3065 300 1.22 1.34 B57236S0250M000 25 1200 50 1.9 1209 3165 300 1200 1.44 1.38 B57236S0500M000 80 1.6 1304 3300 400 1600 1.64 1.37 B57236S0800M000 1) For details on the capacitance C as well as on the parameters k and n refer toApplication Note, chapters 2.6 and 2.7. test Please read Important notes and Page 2 of 6 Cautions and warnings at the end of this document.