NTC thermistors for
temperature measurement
Miniature sensors
with bendable wires
Series/Type: B57863S
Date: January 2018
© EPCOS AG 2018. 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.
Applications
Temperature measurement
Features
Uni curve sensor
Short response time
High temperature accuracy
between 0 °C and 70 °C
Excellent long-term stability
Epoxy encapsulation
PTFE-insulated leads of silver-plated
nickel wire, AWG 30
UL approval (E69802)
Options
Alternative lead lengths on request
Delivery mode
Bulk
Dimensional drawing
Dimensions in mm
Approx. weight 90 mg
General technical data
Climatic category (IEC 60068-1) 55/155/56
Max. power (at 25 °C) P
25
60 mW
Temperature tolerance (0 ... 70 °C) T ±0.2, ±0.5 K
Dissipation factor (in air) δ
th
approx. 1.5 mW/K
Thermal cooling time constant (in air) τ
c
approx. 15 s
Heat capacity C
th
approx. 22.5 mJ/K
Electrical specification and ordering codes
R
25
No. of R/T
characteristic
B
25/100
K
Ordering code
+ = Temperature tolerance
F = ±0.2 K
G = ±0.5 K
3 k 8016 3988 B57863S0302+040
5 k 8016 3988 B57863S0502+040
10 k 8016 3988 B57863S0103+040
30 k 8018 3964 B57863S0303+040
Temperature measurement B57863S
Miniature sensors with bendable wires S863
Page 2 of 21Please read Cautions and warnings and
Important notes at the end of this document.
Note
For calculation of the R/T characteristics refer to our special tool "NTC R/T calculation". You may
download this tool from the Internet (www.epcos.com/tools NTC Thermistors NTC R/T
Calculation).
Reliability data
Test Standard Test conditions R
25
/R
25
(typical)
Remarks
Storage in
dry heat
IEC
60068-2-2
Storage at upper
category temperature
T: 155 °C
t: 1000 h
< 2% No visible
damage
Storage in damp
heat, steady state
IEC
60068-2-78
Temperature of air: 40 °C
Relative humidity of air: 93%
Duration: 56 days
< 1% No visible
damage
Rapid temperature
cycling
IEC
60068-2-14
Lower test temperature: 55 °C
Upper test temperature: 155 °C
Number of cycles: 100
< 1% No visible
damage
Endurance P
max
: 60 mW
t: 1000 h
< 3% No visible
damage
Long-term stability
(empirical value)
Temperature: 70 °C
t: 10000 h
< 2% No visible
damage
Temperature measurement B57863S
Miniature sensors with bendable wires S863
Page 3 of 21Please read Cautions and warnings and
Important notes at the end of this document.

B57863S0103G040

Mfr. #:
Manufacturer:
EPCOS / TDK
Description:
NTC Thermistors 10k 3988
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union