B57504K0103A009

NTC thermistors for temperature measurement Probe assemblies Series/Type: Date: B57504K 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 B57504K K504 Applications Temperature measurement in household appliances (e.g. dryers, dish washers, small appliances) Features NTC thermistor potted in a medium-resistant stainless steel case Short thermal response time in water Wire heat-resistant up to 125 °C (XLPE-insulated wire) Options Alternative casing, cable lengths, cable material (PTFE), R/T characteristics and connectors available on request. Delivery mode Bulk General technical data Climatic category Upper category temperature Maximum operating temperature Resistance tolerance Rated temperature Dissipation factor Thermal time constant Insulation resistance Test voltage (IEC 60068-1) (wire) (sensor head) Dimensional drawing Dimensions in mm Approx. weight 2.3 g (in air) (in water) (V = 500 V DC) (t = 1 s) Top,max ∆RR/RR TR δth τa Rins Vtest 20/125/42 125 150 ±2 70 approx. 2 100 1250 °C °C % °C mW/K s MΩ V AC Electrical specification and ordering codes R70 Ω 2055 R25 Ω 10000 No. of R/T characteristic 7003 B25/100 K 3625 ±0.8% Ordering code B57504K0103A009 Please read Cautions and warnings and Important notes at the end of this document. Page 2 of 9 Temperature measurement Probe assemblies B57504K K504 Reliability data Test Storage in dry heat Standard IEC 60068-2-2 Test conditions Storage at max. operating temperature T: 150 °C t: 168 h Medium: air Storage at lower category temperature T: 20 °C t: 1000 h Medium: air Temperature of air: 60 °C Relative humidity of air: 93% Duration: 1000 h Lower test temperature: 15 °C Upper test temperature: 96 °C Dwell time: 30 s Time to change from lower to upper temperature: