PTC thermistors as
limit temperature sensors
Leaded disks, coated, miniaturized
Series/Type:
Date:
B59008
March 2014
© EPCOS AG 2014. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Sensors
Limit temp. sensors, leaded disks, coated, miniaturized
C8
Applications
Limit temperature monitoring
Features
Tinned leads
Marked with coded sensing temperature
Characteristics for sensing temperatures
T
sense
= 90 to 160
°C
conform with DIN 44081
Extremely fast response due to small
dimensions
UL approval to UL 1434 (file number E69802)
RoHS-compatible
Delivery mode
Bulk (standard)
Dimensional drawing
Dimensions in mm
General technical data
Max. operating voltage
Max. measuring voltage
Rated resistance
Thermal threshold time
Operating temperature range
Operating temperature range
(T
A
= 0 ... 40
°C)
V
max
(T
A
= 25
°C
... T
sense
+23 K) V
meas,max
(V
PTC
≤
2.5 V)
R
R
t
a
(V
≤
V
meas,max
)
T
op
(V = V
max
)
T
op
30
7.5
≤
250
<3
40/ T
sense
+23
0/+40
V DC
V DC
Ω
s
°C
°C
Electrical specifications and ordering codes
T
sense
R
(T
sense
∆T)
(V
PTC
≤
2.5 V)
Ω
R
(T
sense
+
∆T)
(V
PTC
≤
2.5 V)
Ω
≥
570
≥
570
≥
1330
≥
1330
≥
1330
≥
1330
≥
1330
≥
1330
≥
1330
≥
1330
R
(T
sense
+ 15 K)
(V
PTC
≤
7.5 V)
Ω
-
-
≥
4k
≥
4k
≥
4k
≥
4k
≥
4k
≥
4k
≥
4k
≥
4k
R
Stamp Ordering code
(T
sense
+ 23 K) code
(V
PTC
≤
2.5 V)
Ω
≥
4k
≥
4k
-
-
-
-
-
-
-
-
g
h
i
j
k
l
m
n
p
s
B59008C0070A040
B59008C0080A040
B59008C0090A040
B59008C0100A040
B59008C0110A040
B59008C0120A040
B59008C0130A040
B59008C0140A040
B59008C0150A040
B59008C0160A040
°C
∆T
=
±5
K
70
≤
570
80
≤
570
90
≤
550
100
≤
550
110
≤
550
120
≤
550
130
≤
550
140
≤
550
150
≤
550
160
≤
550
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 9
Sensors
Limit temp. sensors, leaded disks, coated, miniaturized
C8
Reliability data
Test
Electrical endurance,
constant
Damp heat
Standard
IEC 60738-1
IEC 60738-1
Test conditions
Storage at V
max
/T
op,max
(V
max
)
Test duration: 1000 h
Temperature of air: 40
°C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
T
1
= T
op,min
(0 V), T
2
= T
op,max
(0 V)
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, test Na
Frequency range: 10 to 55 Hz
Displacement amplitude: 0.75 mm
Test duration: 3
×
2 h
Test according to IEC 60068-2-6, test Fc
∆R
25
/R
25
< 25%
< 10%
Rapid change
of temperature
IEC 60738-1
< 25%
Vibration
IEC 60738-1
< 5%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 9
Sensors
Limit temp. sensors, leaded disks, coated, miniaturized
C8
Cautions and warnings
General
EPCOS thermistors are designed for specific applications and should not be used for purposes
not identified in our specifications, application notes and data books unless otherwise agreed
with EPCOS during the design-in-phase.
Ensure suitability of thermistor through reliability testing during the design-in phase. The ther-
mistors should be evaluated taking into consideration worst-case conditions.
Storage
Store thermistors only in original packaging. Do not open the package before storage.
Storage conditions in original packaging: storage temperature 25
°C
... +45
°C,
relative hu-
midity
≤75%
annual mean, maximum 95%, dew precipitation is inadmissible.
Avoid contamination of thermistors surface during storage, handling and processing.
Avoid storage of thermistor in harmful environment with effect on function on long-term opera-
tion (examples given under operation precautions).
Use thermistor within the following period after delivery:
Through-hole devices (housed and leaded PTCs): 24 months
Motor protection sensors, glass-encapsulated sensors and probe assemblies: 24 months
Telecom pair and quattro protectors (TPP, TQP): 24 months
Leadless PTC thermistors for pressure contacting: 12 months
Leadless PTC thermistors for soldering: 6 months
SMDs in EIA sizes 3225 and 4032, and for PTCs with metal tags: 24 months
SMDs in EIA sizes 0402, 0603, 0805 and 1210: 12 months
Handling
PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs.
Components must not be touched with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
Soldering (where applicable)
Use rosin-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.
Standard PTC heaters are not suitable for soldering.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 9
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