NTC thermistors for temperature measurement Glass-encapsulated sensors, standard type Series/Type: B57540G, B57540G1 Date: February 2009 The following products presented in this data sheet are being withdrawn. Ordering Code Substitute Product Date of Deadline Last Last Shipments Withdrawal Orders B57540G0145* B57540G1104* 2012-03-23 2012-06-28 2012-09-28 B57540G0234* B57540G1104* 2012-03-23 2012-06-28 2012-09-28 For further information please contact your nearest EPCOS sales office, which will also support you in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales. 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 B57540G, B57540G1 Glass-encapsulated sensors G540/G1540 Applications Dimensional drawing Temperature measurement Features Glass-encapsulated, heat-resistive and highly stable For temperature measurement up to 250 C Very short response time Small dimensions Leads: dumet wires (copper-clad FeNi) Options Leads: nickel-plated dumet wires Alternative dimensions available on request Dimensions in mm 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 % 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 Cautions and warnings and Page 2 of 18 Important notes at the end of this document.