NTC thermistors for temperature measurement Leaded NTC thermistors, lead spacing 2.5 mm Series/Type: B57891M Date: March 2013 EPCOS AG 2013. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited.Temperature measurement and compensation B57891M Leaded NTC thermistors, lead spacing 2.5 mm M891 Applications Dimensional drawing Temperature measurement and compensation Features Wide resistance range Cost-effective Lacquer-coated thermistor disk Leads: copper-clad Fe wire, tinned Marked with resistance and tolerance Options Lead spacing 5 mm available on request Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack on request Dimensions in mm Approx. weight 0.2 g General technical data Climatic category (IEC 60068-1) 40/125/56 Max. power (at 25 C) P 200 mW 25 Resistance tolerance R /R 5, 10 % R R Rated temperature T 25 C R Dissipation factor (in air) approx. 3.5 mW/K th Thermal cooling time constant (in air) approx. 12 s c Heat capacity C approx. 40 mJ/K th Electrical specification and ordering codes R No. of R/T B Ordering code 25 25/100 characteristic K 1 k 1009 3930 3% B57891M0102+000 1.5 k 1008 3560 3% B57891M0152+000 2.2 k 1013 3900 3% B57891M0222+000 3.3 k 2003 3980 3% B57891M0332+000 4.7 k 2003 3980 3% B57891M0472+000 6.8 k 2003 3980 3% B57891M0682+000 10 k 4901 3950 3% B57891M0103+000 15 k 2004 4100 3% B57891M0153+000 22 k 2904 4300 3% B57891M0223+000 + = Resistance tolerance J = 5% K = 10% Please read Cautions and warnings and Page 2 of 28 Important notes at the end of this document.