B57820M102A3 EPCOS Inc, B57820M102A3 Datasheet

Page 1

NTC thermistors for temperature measurement Leadless NTCs Series/Type: B57820M 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. ...

Page 2

Temperature measurement and compensation Leadless NTCs Applications Temperature measurement and compensation Features Front surfaces silver-plated For clamp contacting UL approval (E69802) Options Alternative resistance ratings, rated temperatures, resistance tolerances and disk geometries available on request. Delivery mode Bulk General technical ...

Page 3

Temperature measurement and compensation Leadless NTCs Reliability data Test Standard Storage in IEC dry heat 60068-2-2 Storage in damp IEC heat, steady state 60068-2-78 Rapid temperature IEC cycling 60068-2-14 Endurance Long-term stability (empirical value) Please read Cautions and warnings and ...

Page 4

Temperature measurement and compensation Leadless NTCs R/T characteristics 1006 R/T No 3550 K 25/100 R /R (%/ 55.0 48.503 5.8 50.0 36.524 5.7 45.0 27.639 5.6 40.0 21.021 5.5 35.0 16.069 5.4 ...

Page 5

Temperature measurement and compensation Leadless NTCs 1006 R/T No 3550 K 25/100 R /R (%/ 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 ...

Page 6

Temperature measurement and compensation Leadless NTCs 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. ...

Page 7

Temperature measurement and compensation Leadless NTCs 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 distance ...

Page 8

Temperature measurement and compensation Leadless NTCs The components should be left in the original packing. Touching the metallization of unsoldered thermistors may change their soldering properties. Storage temperature: Relative humidity (without condensation): Solder the thermistors listed in this data book ...

Page 9

Temperature measurement and compensation Leadless NTCs 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 ...

Page 10

Temperature measurement and compensation Leadless NTCs 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 ...

Page 11

Temperature measurement and compensation Leadless NTCs Symbols and terms Symbol English A Area AWG American Wire Gauge B B value B B value determined by resistance 25/100 measurement and 100 C C Heat capacitance th I Current ...

Page 12

Temperature measurement and compensation Leadless NTCs Symbol English Temperature coefficient Tolerance, change Dissipation factor th Thermal cooling time constant c Thermal time constant a Abbreviations / Notes Symbol English Surface-mounted devices * To be replaced by a number in ordering ...

Page 13

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 ...