NTC thermistors for
temperature measurement
Probe assemblies
Series/Type: B57703M1
Date: March 2013
EPCOS AG 2015. 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 B57703M1
Probe assemblies M1703
Applications Dimensional drawing
Measurement of high temperatures on
surfaces, e.g. in ovens, on heat sinks and
housings
Features
NTC thermistor encapsulated in a brass
metal-tag case
Suitable for temperatures up to 300 C at the
sensor head
Easy mounting and good thermal coupling
Wire heat resistant up to 200 C
(PTFE-insulated wire AWG 26 coated with
fiberglass sleeve),
Molex connector operating temperature:
40 to 105 C
Options
Alternative cable lengths, R/T characteristics
Dimensions in mm
and connectors available on request.
Approx. weight 8.1 g
Delivery mode
Bulk
General technical data
Climatic category (IEC 60068-1) +10/200/56
Upper category temperature 200 C
Maximum operating temperature (sensor head) T 300 C
op,max
Max. power (at 25 C) P 50 mW
25
Resistance tolerance R /R 3 %
R R
Rated temperature T 25 C
R
Dissipation factor (in air) approx. 2 mW/K
th
Thermal cooling time constant (in air) approx. 20 s
c
Heat capacity C approx. 40 mJ/K
th
Test voltage (t = 1 s) V 1250 V AC
test
Electrical specification and ordering codes
R No. of R/T B B Ordering code
25 25/100 0/100
characteristic K K
100 k 8404 4085 4036 1% B57703M1104A002
Please read Cautions and warnings and Page 2 of 9
Important notes at the end of this document.