NTC thermistors for temperature measurement Glass-encapsulated sensors, standard type Series/Type: B57540 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.Temperature measurement B57540 Glass-encapsulated sensors G540 Applications Dimensional drawing Automotive electronics Industrial electronics Home appliances Features Glass-encapsulated, heat-resistive and highly stable For temperature measurement up to 250 C Fast response Small dimensions Leads: dumet wires (copper-clad FeNi) Options Dimensions in mm Leads: nickel-plated dumet wires. Alternative dimensions available on request. Delivery mode Bulk General technical data Climatic category (IEC 60068-1) 55/250/56 Max. power (at 25 C) P 18 mW 25 Resistance tolerance R /R 1, 2, 3, 5 % R R Rated temperature T 25 C R Dissipation factor (in air) approx. 0.4 mW/K th Thermal cooling time constant (in air) approx. 3 s c Heat capacity C approx. 1.3 mJ/K th Please read Important notes and Page 2 of 60 Cautions and warnings at the end of this document.