NTC thermistors for
temperature measurement
Miniature sensors
with bendable wires
Series/Type: B57861S
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 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.