NTC thermistors for
temperature measurement
Probe assemblies, surface mounted sensors
Series/Type:
Date:
B58100
April 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
Probe assemblies
B58100
F120
Applications
Surface mounted sensor for measurement of
boiler temperature
Features
Short response time due to
glass-encapsulated NTC thermistor
Fast and easy mounting
Screw attachment fixation
Options
Alternative resistance ratings available on
request
Alternative fast-on plug terminals 2.8 x 0.5 or
4.8 x 0.8 mm available
Delivery mode
Bulk
General technical data
Climatic category
Maximum power
Resistance tolerance
Rated temperature
Thermal time constant
Insulation resistance
Dissipation factor
Test voltage
(IEC 60068-1)
(at 25
°C)
Dimensional drawing
Dimensions in mm
P
25
∆R
R
/R
R
T
R
(measured on surface)
τ
a
(V = 100 V DC, t = 1 min) R
ins
(in air)
δ
th
(t = 1 s)
V
test
5/100/21
18
±3.6
60
<5
> 10
approx. 2.1
500
mW
%
°C
s
MΩ
mW/K
V AC
Electrical specification and ordering codes
R
60
Ω
2500
2500
R
25
Ω
10151
10151
No. of
B
25/100
R/T characteristic
K
8317
4005
±1%
8317
4005
±1%
B
0/100
K
3970
3970
Contact
dimensions
mm
2.8 x 0.5
4.8 x 0.8
Ordering code
B58100A0461A000
B58100A0463A000
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 9
Temperature measurement
Probe assemblies
B58100
F120
Reliability data
Test
Storage in
dry heat
Standard
IEC
60068-2-2
Test conditions
∆R
100
/R
100
(typical)
< 3%
Remarks
No visible
damage
Storage in damp
heat, steady state
Rapid temperature
cycling
Thermal overload
Storage at upper
category temperature
T: 100
°C
t: 500 h
IEC
Temperature of air: 85
°C
60068-2-78 Relative humidity of air: 85%
Duration: 21 days
IEC
Lower test temperature: 5
°C
60068-2-14 Upper test temperature: 85
°C
Number of cycles: 1000
Short time overload: 125
°C
t: 10 h
< 5%
No visible
damage
No visible
damage
No visible
damage
< 3%
< 3%
Note
Contact of NTC thermistors with any liquids and solvents shall be prevented. It must be
ensured that no water enters the NTC thermistors (e.g. through plug terminals).
Avoid dewing and condensation unless thermistor is specified for these conditions.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 9
Temperature measurement
Probe assemblies
B58100
F120
Cautions and warnings
See "Important notes".
Storage
Store thermistors only in original packaging. Do not open the package prior to storage.
Storage conditions in original packaging: storage temperature 25
°C
... +45
°C,
relative
humidity
≤75%
annual mean, <95% maximum 30 days per annum, dew precipitation is
inadmissible.
Do not store thermistors where they are exposed to heat or direct sunlight. Otherwise, the
packing material may be deformed or components may stick together, causing problems during
mounting.
Avoid contamination of thermistor surface during storage, handling and processing.
Avoid storage of thermistors in harmful environments like corrosive gases (SO
x
, Cl etc).
Use the components as soon as possible after opening the factory seals, i.e. the
polyvinyl-sealed packages.
Solder thermistors within the time specified after shipment from EPCOS.
For leaded components this is 24 months, for SMD components with nickel barrier termination
12 months, for SMD components with AgPd termination 6 months.
Handling
NTC thermistors must not be dropped. Chip-offs or any other damage must not be caused
during handling of NTCs.
Do not touch components with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
Washing processes may damage the product due to the possible static or cyclic mechanical
loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts,
which might lead to reduced reliability or lifetime.
Bending / twisting leads
A lead (wire) may be bent at a minimum distance of twice the wire’s diameter plus 4 mm from
the component head or housing. When bending ensure the wire is mechanically relieved at the
component head or housing. The bending radius should be at least 0.75 mm.
Twisting (torsion) by 180° of a lead bent by 90° is permissible at 6 mm from the bottom of the
thermistor body.
Soldering
Use resin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 9
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