B57020M2502A017

NTC thermistors for temperature measurement Probe assemblies Series/Type: Date: B57020M2 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 Probe assemblies B57020M2 M2020 Applications Cabinet and evaporator in refrigerators and deep freezers Features Thermistor in molded plastic case with cable outlet Highly resistant to water/moisture PVC-insulated connecting cable (white) Conductor cross section: 2 × 0.34 mm2 Construction based on DIN EN 60 730 -1/VDE protection class 2 UL approval (E252167) Options Alternative head dimensions, resistance ratings, rated temperatures, resistance tolerances and cable lengths available on request PVC-free connecting cable on request Color markings on cable available on request Single insulated versions with twin wires available on request Delivery mode Bulk General technical data Climatic category Max. power Resistance tolerance Rated temperature Dissipation factor Thermal time constant Insulation resistance (IEC 60068-1) (at 25 °C) Dimensional drawing Dimensions in mm (in air) (in water) (V = 500 V DC) P25 ∆RR/RR TR δth τa Rins 40/080/56 350 ±2 0 approx. 10 approx. 35 > 1000 mW % °C mW/K s MΩ Electrical specification and ordering codes R25 Ω 5000 5000 5000 R0 Ω 16330 16330 16330 No. of R/T characteristic 2003 2003 2003 B25/100 K 3980 ±1.5% 3980 ±1.5% 3980 ±1.5% l mm 900 ±30 2000 ±30 2800 ±30 Ordering code B57020M2502A017 B57020M2502A020 B57020M2502A001 Please read Cautions and warnings and Important notes at the end of this document. Page 2 of 9 Temperature measurement Probe assemblies B57020M2 M2020 Reliability data Test Storage in dry heat Standard IEC 60068-2-2 Test conditions ∆R25/R25 (typical) < 2% Remarks No visible damage Storage at upper category temperature T: 80 °C t: 1000 h Storage in damp IEC Temperature of air: 40 °C heat, steady state 60068-2-78 Relative humidity of air: 93% Duration: 56 days Storage in coldness Storage at lower category temperature T: 40 °C t: 1000 h Rapid temperature IEC Lower test temperature: 40 °C cycling (in air) 60068-2-14 Upper test temperature: 80 °C Time to change from lower to upper temperature: