NTC thermistors for temperature measurement Leadless NTCs Series/Type: B57820M Date: March 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.Temperature measurement and compensation B57820M Leadless NTCs M820 Applications Dimensional drawing Temperature measurement and compensation Features Front surfaces silver-plated For clamp contacting UL approval (E69802) Options Alternative resistance ratings, rated temperatures, resistance tolerances and disk geometries available on request. R () d (mm) th (mm) 100 Delivery mode Bulk 39.6 5.1 1.1 2.2 1.4 77 5.3 0.3 1.3 0.2 92 5.1 1.1 2.2 1.4 Approx. weight 0.1 g General technical data Climatic category (IEC 60068-1) 55/155/21 Max. power (at 25 C) P 180 mW 25 Resistance tolerance R /R 5 % R R Rated temperature T 100 C R 1) Dissipation factor (in air) approx. 3 mW/K th 1) Thermal cooling time constant (in air) approx. 30 s c 1) Heat capacity C approx. 90 mJ/K th Electrical specification and ordering codes No. of R/T Ordering code R R B 100 25 25/100 characteristic K 39.6 560.2 1009 3930 1.5% B57820M0561A005 77 843.2 1006 3550 1.5% B57820M0841A004 92 1014 1008 3560 1.5% B57820M0102A003 1) Depends on mounting situation Please read Cautions and warnings and Page 2 of 18 Important notes at the end of this document.