NTC thermistors for
temperature measurement
Glass-encapsulated sensors
for media contact
Series/Type:
Date:
B57565G1
February 2009
© EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Temperature measurement
Glass-encapsulated sensors for media contact
B57565G1
G1565
Applications
Temperature measurement
Features
Glass-encapsulated NTC thermistor,
heat-resistant and highly stable
Coating of glass body and leads for electrical
insulation and improved resistance against
media
For temperature measurement up to
260
°C
in oil
Short response time
Leads: dumet wires (copper-clad FeNi)
Testing conditions must be verified
Options
Leads: nickel-plated dumet wires, alternative
dimensions and resistance values available
on request.
For temperature measurement in other
media on request.
Delivery mode
Bulk
General technical data
Climatic category
Max. power
Resistance tolerance
Rated temperature
Dissipation factor
Thermal cooling time constant
Heat capacity
Insulation resistance
1)
Test voltage
1)
(IEC 60068-1)
(at 25
°C)
Dimensional drawing
Dimensions in mm
(in air)
(in air)
(V = 100 V DC)
(t = 1 s)
P
25
∆R
R
/R
R
T
R
δ
th
τ
c
C
th
R
ins
V
test
55/260/56
50
±1, ±2, ±3
25
approx. 1.5
approx. 18
approx. 27
≥
100
500
mW
%
°C
mW/K
s
mJ/K
MΩ
V DC
1) Medium: NaCl-solution; Temperature: Room temperature
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 14
Temperature measurement
Glass-encapsulated sensors for media contact
B57565G1
G1565
Electrical specification and ordering codes
R
25
Ω
10 k
30 k
No. of R/T
characteristic
8307
7002
B
25/85
K
3478
3973
B
0/100
K
3450
3944
*=
B
25/100
K
3492
±1%
3988
±1%
Leads
5 = dumet wires
7 = nickel-plated wires
Ordering code
B57565G1103+00*
B57565G1303+00*
+ = Resistance tolerance
F =
±1%
G =
±2%
H =
±3%
Note
The type series G1565 has a specially designed insulation (coating, wire coating) to withstand the
named media tests. Therefore these sensors must be protected to avoid any damage of the
insulation material during handling and in the application. The non-insulated area of the NTC
element must not have contact with the media or vapor thereof.
Reliability data
Test
Storage in
dry heat
Standard
IEC
60068-2-2
Test conditions
∆R
25
/R
25
(typical)
< 3%
Remarks
No visible
damage
Storage in damp
heat, steady state
Rapid temperature
cycling
Storage in
motor oil, synthetic
Shock test in motor oil
Storage at upper
category temperature
T: 260
°C
t: 1000 h
IEC
Temperature of air: 85
°C
60068-2-67 Relative humidity of air: 85%
Duration: 56 days
IEC
Lower test temperature: 55
°C
60068-2-14 Upper test temperature: 200
°C
Number of cycles: 1000
T: 140
°C
t: 2000 h
10000 cycles
+25
°C/+125 °C
< 3%
No visible
damage
No visible
damage
No visible
damage
No visible
damage
< 3%
< 3%
< 3%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 14
Temperature measurement
Glass-encapsulated sensors for media contact
B57565G1
G1565
Test
Storage in transmission oil,
synthetic
Shock test in transmission
oil
Motor fuels: Gasoline
(ÖNORM EN 228)
Diesel (ÖNORM EN 590)
Biodiesel (FAME & RME
quality)
Storage in
anti freeze protection
cleaner solvent
windshield cleaner
breaking fluid
ethanol
ethanol/gasoline
Standard
Test conditions
T: 140
°C
t: 2000 h
10000 cycles
+25
°C/+125 °C
T: 25
°C
t: 2000 h
∆R
25
/R
25
(typical)
< 3%
< 3%
< 3%
Remarks
No visible
damage
No visible
damage
No visible
damage
With 0.3 V DC on NTC over
protective resistor
T: 25
°C
t: 168 h
< 3%
No visible
damage
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 14
Temperature measurement
Glass-encapsulated sensors for media contact
B57565G1
G1565
R/T characteristics
R/T No.
T (°C)
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
135.0
140.0
145.0
150.0
155.0
7002
8307
B
25/100
= 3988 K
B
25/100
= 3492 K
R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K)
96.33
66.866
47.037
33.508
24.156
17.613
12.98
9.6643
7.2656
5.5129
4.22
3.2575
2.5348
1.9876
1.5699
1.2488
1.0000
0.80594
0.65355
0.53312
0.43735
0.36074
0.29911
0.24925
0.20872
0.17558
0.14837
0.12592
0.10731
0.091816
0.078862
0.067988
0.058824
0.051071
0.044489
0.03888
0.034084
0.02997
0.02643
0.023373
0.020727
0.018429
0.016427
7.4
7.2
6.9
6.7
6.4
6.2
6.0
5.8
5.6
5.4
5.3
5.1
4.9
4.8
4.6
4.5
4.4
4.3
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.2
3.1
3.0
2.9
2.9
2.8
2.7
2.7
2.6
2.5
2.5
2.4
2.4
2.3
2.3
52.624
38.452
28.401
21.194
15.972
12.149
9.3246
7.2181
5.6332
4.4308
3.5112
2.8024
2.252
1.8216
1.4827
1.2142
1.0000
0.82818
0.68954
0.57703
0.48525
0.41
0.34798
0.29663
0.25392
0.21824
0.1883
0.16307
0.14174
0.12362
0.10818
0.094973
0.08364
0.073881
0.06545
0.058144
0.051794
0.046259
0.04142
0.037179
0.033451
0.030166
0.027264
6.4
6.2
6.0
5.8
5.6
5.4
5.2
5.0
4.9
4.7
4.6
4.4
4.3
4.2
4.1
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.2
3.1
3.0
2.9
2.8
2.8
2.7
2.6
2.6
2.5
2.5
2.4
2.3
2.3
2.2
2.2
2.1
2.1
2.0
2.0
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 14
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