B57020M2502A001

NTC thermistors for temperature measurement Probe assemblies Series/Type: B57020M2 Date: January 2018 © EPCOS AG 2018. 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 B57020M2 Probe assemblies M2020 Applications Cabinet and evaporator in refrigerators and deep freezers Dimensional drawing 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 Dimensions in mm 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) (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 Please read Cautions and warnings and Important notes at the end of this document. B25/100 K 3980 ±1.5% 3980 ±1.5% 3980 ±1.5% Page 2 of 11 l mm Ordering code 900 ±30 2000 ±30 2800 ±30 B57020M2502A017 B57020M2502A020 B57020M2502A001 Temperature measurement B57020M2 Probe assemblies M2020 Reliability data Test Standard Storage in dry heat IEC 60068-2-2 Test conditions 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: