NTC thermistors for
temperature measurement
Miniature sensors
with bendable wires
Series/Type: B57861S
Date: March 2013
EPCOS AG 2013. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.Temperature measurement B57861S
Miniature sensors with bendable wires S861
Applications Dimensional drawings
Temperature measurement
Length
50 mm 350 mm
Features
Short response time
High measuring accuracy
Tight B value tolerances
available
Epoxy resin encapsulation
PTFE-insulated leads of
silver-plated nickel wire,
AWG 30 (50 mm)
PTFE-insulated leads of
silver-plated Cu wire
(19 x 0.07 mm),
AWG 28 (350 mm)
UL approval (E69802)
Options
Alternative lead lengths on
request
Dimensions in mm
Delivery mode
Bulk
General technical data
Climatic category (IEC 60068-1) 55/155/56
Max. power (at 25 C) P 60 mW
25
Resistance tolerance R /R 1, 3, 5 %
R R
Rated temperature T 25 C
R
1)
Dissipation factor (in air) approx. 1.5 / 3.2 mW/K
th
1)
Thermal cooling time constant (in air) approx. 15 / 12 s
c
1)
Heat capacity C approx. 22.5 / 38.4 mJ/K
th
1) For PTFE-insulated leads of silver-plated Cu wire (19 x 0.07 mm), AWG 28 (350 mm).
Please read Cautions and warnings and Page 2 of 20
Important notes at the end of this document.