NTC thermistors for
temperature measurement
Glass-encapsulated sensors
with insulation
Series/Type: B57551G1
Date: August 2014
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 B57551G1
Glass-encapsulated sensors with insulation G1551
Applications Dimensional drawing
Temperature measurement
Features
Glass-encapsulated NTC thermistor,
heat-resistant and highly stable
Coating of glass body and leads for electrical
insulation
For temperature measurement up to
260 C
Short response time
Small dimensions
Leads: dumet wires (copper-clad FeNi)
Options
Dimensions in mm
Alternative dimensions available on request
Approx. weight 60 mg
Delivery mode
Bulk
General technical data
Climatic category (IEC 60068-1) 55/260/56
Max. power (at 25 C) P 32 mW
25
Resistance tolerance R /R 1, 2, 3 %
R R
Rated temperature T 25 C
R
Dissipation factor (in air) approx. 0.8 mW/K
th
Thermal cooling time constant (in air) approx. 9 s
c
Heat capacity C approx. 7.2 mJ/K
th
1)
Insulation resistance (V = 100 V DC) R 100 M
ins
1)
Test voltage (t = 1 s) V 500 V DC
test
1) Medium: NaCl-solution; Temperature: Room temperature
Please read Cautions and warnings and Page 2 of 21
Important notes at the end of this document.