NTC thermistors for temperature measurement Glass-encapsulated sensors with insulation Series/Type: B57541G, B57541G1 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 B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 Applications Temperature measurement Dimensional drawing Features Glass-encapsulated NTC thermistor, heat-resistant and highly stable Coating of glass body and leads for electrical insulation For temperature measurement up to 250 °C Very short response time Small dimensions Leads: dumet wires (copper-clad FeNi) Options Leads: nickel-plated dumet wires Alternative dimensions available on request Dimensions
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 Electrical specification and ordering codes R25 Ω 5k 5k 10 k 10 k 10 k 10 k 30 k 30 k 100 k 100 k No.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 R/T characteristics R/T No. T (°C) 7002 7003 8304 B25/100 = 3988 K B25/100 = 3625 K B25/100 = 4092 K RT/R25 α (%/K) RT/R25 α (%/K) RT/R25 α (%/K) 55.0 50.0 45.0 40.0 35.0 96.33 66.866 47.037 33.508 24.156 7.4 7.2 6.9 6.7 6.4 63.225 45.46 33.07 24.324 18.081 6.7 6.5 6.3 6.0 5.8 30.0 25.0 20.0 15.0 10.0 17.613 12.98 9.6643 7.2656 5.5129 6.2 6.0 5.8 5.6 5.4 13.575 10.29 7.8716 6.0739 4.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation R/T No. T (°C) 160.0 165.0 7002 G541/G1541 7003 8304 B25/100 = 3988 K B25/100 = 3625 K B25/100 = 4092 K RT/R25 α (%/K) RT/R25 α (%/K) RT/R25 α (%/K) 0.014679 2.2 0.021665 2.0 0.012967 2.3 0.013149 2.2 0.019613 2.0 0.011566 2.3 170.0 175.0 180.0 185.0 190.0 0.011806 0.010623 0.0095804 0.0086582 0.0078408 2.1 2.1 2.0 2.0 2.0 0.017793 0.016176 0.014735 0.013448 0.012297 1.9 1.9 1.8 1.8 1.8 0.010341 0.0092664 0.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 R/T characteristics R/T No. T (°C) 8307 8402 B25/100 = 3492 K B0/100 = 3450 K RT/R25 α (%/K) RT/R25 α (%/K) 55.0 50.0 45.0 40.0 35.0 52.624 38.452 28.401 21.194 15.972 6.4 6.2 6.0 5.8 5.6 51.991 37.989 28.07 20.96 15.809 6.4 6.2 5.9 5.7 5.5 30.0 25.0 20.0 15.0 10.0 12.149 9.3246 7.2181 5.6332 4.4308 5.4 5.2 5.0 4.9 4.7 12.037 9.2484 7.1668 5.5993 4.4087 5.4 5.2 5.0 4.9 4.7 5.0 0.0 5.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation R/T No. T (°C) 160.0 165.0 8307 G541/G1541 8402 B25/100 = 3492 K B0/100 = 3450 K RT/R25 α (%/K) RT/R25 α (%/K) 0.024694 2.0 0.024442 2.0 0.022414 1.9 0.022175 1.9 170.0 175.0 180.0 185.0 190.0 0.020385 0.018577 0.016961 0.015514 0.014216 1.9 1.8 1.8 1.8 1.7 0.02016 0.018365 0.016762 0.015328 0.014043 1.9 1.8 1.8 1.8 1.7 195.0 200.0 205.0 210.0 215.0 0.013049 0.011999 0.011051 0.010194 0.0094181 1.7 1.7 1.6 1.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 Mounting instructions 1 Soldering 1.1 Leaded NTC thermistors Leaded thermistors comply with the solderability requirements specified by CECC. When soldering, care must be taken that the NTC thermistors are not damaged by excessive heat. The following maximum temperatures, maximum time spans and minimum distances have to be observed: Dip soldering Iron soldering Bath temperature max. 260 °C max.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 Bending strength: Test Ub: Two 90°-bends in opposite directions at a weight of 0.25 kg. Torsional strength: Test Uc: severity 2 The lead is bent by 90° at a distance of 6 to 6.5 mm from the thermistor body. The bending radius of the leads should be approx. 0.75 mm. Two torsions of 180° each (severity 2).
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 The components should be left in the original packing. Touching the metallization of unsoldered thermistors may change their soldering properties.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 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.
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 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 B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 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 M
Temperature measurement B57541G, B57541G1 Glass-encapsulated sensors with insulation G541/G1541 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
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.
