NTC thermistors for temperature measurement Probe assemblies Series/Type: B57045K Date: February 2009 © EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited.
Temperature measurement B57045K Probe assemblies K45 Applications Temperature compensation, measurement and control (chassis mounting) Dimensional drawing Features Cost-effective Good thermal coupling through screw-type case (thread M3) Electrically isolated aluminum case Tinned copper leads Options Tighter resistance tolerance available on request. Delivery mode Bulk Dimensions in mm Approx. weight 1 g General technical data Climatic category Max.
Temperature measurement B57045K Probe assemblies K45 Electrical specification and ordering codes R25 Ω 1k 2.2 k 4.7 k 6.8 k 10 k 33 k 47 k 68 k 100 k 150 k No.
Temperature measurement B57045K Probe assemblies K45 R/T characteristics R/T No. T (°C) 1011 1012 1013 B25/100 = 3730 K B25/100 = 4300 K B25/100 = 3900 K RT/R25 α (%/K) RT/R25 α (%/K) RT/R25 α (%/K) 55.0 50.0 45.0 40.0 35.0 70.014 49.906 36.015 26.296 19.411 6.9 6.7 6.4 6.2 6.0 87.237 62.264 44.854 32.599 23.893 6.8 6.7 6.5 6.3 6.1 77.285 54.938 39.507 28.722 21.099 7.0 6.7 6.5 6.3 6.1 30.0 25.0 20.0 15.0 10.0 14.479 10.903 8.2923 6.3591 4.9204 5.8 5.6 5.4 5.2 5.1 17.654 13.
Temperature measurement B57045K Probe assemblies K45 R/T characteristics R/T No. T (°C) 55.0 50.0 45.0 40.0 35.0 2005 2903 2904 B25/100 = 4600 K B25/100 = 4200 K B25/100 = 4300 K RT/R25 α (%/K) RT/R25 α (%/K) RT/R25 α (%/K) 120.22 85.48 61.004 43.712 31.459 7.0 6.9 6.8 6.7 6.6 120.03 82.38 57.248 40.255 28.627 7.7 7.4 7.2 7.0 6.7 121.46 84.439 59.243 41.938 29.947 7.4 7.2 7.1 6.9 6.7 30.0 25.0 20.0 15.0 10.0 22.746 16.49 12.071 8.8455 6.5446 6.6 6.4 6.3 6.1 6.0 20.577 14.876 10.
Temperature measurement B57045K Probe assemblies Please read Cautions and warnings and Important notes at the end of this document.
Temperature measurement B57045K Probe assemblies K45 R/T characteristics R/T No. T (°C) 4001 4003 B25/100 = 3950 K B25/100 = 4450 K RT/R25 α (%/K) RT/R25 α (%/K) 55.0 50.0 45.0 40.0 35.0 88.052 61.65 43.727 31.395 22.802 7.3 7.0 6.8 6.5 6.3 30.0 25.0 20.0 15.0 10.0 16.742 12.367 9.2353 7.0079 5.3654 6.2 6.0 5.6 5.4 5.4 20.142 14.801 10.976 8.1744 6.1407 6.2 6.1 5.9 5.8 5.7 5.0 0.0 5.0 10.0 15.0 4.126 3.2 2.4986 1.9662 1.5596 5.2 5.0 4.9 4.7 4.6 4.6331 3.5243 2.6995 2.0831 1.
Temperature measurement B57045K Probe assemblies Please read Cautions and warnings and Important notes at the end of this document.
Temperature measurement B57045K Probe assemblies K45 Cautions and warnings General See "Important notes" at the end of this document. Storage Store thermistors only in original packaging. Do not open the package prior to storage. Storage conditions in original packaging: storage temperature 25 °C ... +45 °C, relative humidity ≤75% annual mean, <95% maximum 30 days per annum, dew precipitation is inadmissible. Do not store thermistors where they are exposed to heat or direct sunlight.
Temperature measurement B57045K Probe assemblies K45 Mounting Ensure that no thermo-mechanical stress occurs due to production processes (curing or overmolding processes) when thermistors are sealed, potted or overmolded or during their subsequent operation. The maximum temperature of the thermistor must not be exceeded. Ensure that the materials used (sealing/potting compound and plastic material) are chemically neutral.
Temperature measurement B57045K Probe assemblies K45 Symbols and terms Symbol English German A AWG Area American Wire Gauge Fläche Amerikanische Norm für Drahtquerschnitte B B25/100 B value B value determined by resistance measurement at 25 °C and 100 °C B-Wert B-Wert, ermittelt durch Widerstandsmessungen bei 25 °C und 100 °C Cth Heat capacitance Wärmekapazität I Current Strom N Number (integer) Anzahl (ganzzahliger Wert) P25 Pdiss Pel Pmax Maximum power at 25 °C Power dissipation Ele
Temperature measurement B57045K Probe assemblies K45 Symbol English German α Temperature coefficient Temperaturkoeffizient ∆ Tolerance, change Toleranz, Änderung δth Dissipation factor Wärmeleitwert τc τa Thermal cooling time constant Thermal time constant Thermische Abkühlzeitkonstante Thermische Zeitkonstante Abbreviations / Notes Symbol English German Surface-mounted devices Oberflächenmontierbares Bauelement * To be replaced by a number in ordering Platzhalter für Zahl im Bestel
Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned.
