NTC thermistors for
temperature measurement
Glass-encapsulated sensors,
standard type
Series/Type:
Date:
B57550
March 2006
© EPCOS AG 2006. 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
B57550
G550
Applications
Automotive electronics
Industrial electronics
Home appliances
Features
Glass-encapsulated, heat-resistive and
highly stable
For temperature measurement up to 300
°C
Fast response
Small dimensions
Leads: dumet wires (copper-clad FeNi)
Options
Leads: nickel-plated dumet wires.
Alternative dimensions available on request.
Delivery mode
Bulk
General technical data
Climatic category
Max. power
Resistance tolerance
Rated temperature
Dissipation factor
Thermal cooling time constant
Heat capacity
(IEC 60068-1)
(at 25
°C)
Dimensional drawing
Dimensions in mm
(in air)
(in air)
P
25
∆R
R
/R
R
T
R
δ
th
τ
c
C
th
55/300/56
32
±1, ±2, ±3, ±5
25
approx. 0.75
approx. 7
approx. 5
mW
%
°C
mW/K
s
mJ/K
Please read
Important notes
and
Cautions and warnings
at the end of this document.
Page 2 of 76
Temperature measurement
Glass-encapsulated sensors
B57550
G550
Electrical specification and ordering codes
R
25
Ω
2k
5k
10 k
20 k
30 k
50 k
100 k
230 k
1400 k
No. of R/T
characteristic
8401
8402
8407
8415
8415
8403
8404
8405
8406
B
25/85
K
3420
3480
3480
3992
3992
3992
4066
4240
4557
B
0/100
K
3390
±1%
3450
±1%
3450
±1%
3970
±1%
3970
±1%
3970
±1%
4036
±1%
4537
±1
1)
%
5133
±2
2)
%
*=
B
25/100
K
3436
3497
3497
4006
4006
4006
4085
4264
4581
Ordering code
B57550G0202+00*
B57550G0502+00*
B57550G0103+00*
B57550G0203+00*
B57550G0303+00*
B57550G0503+00*
B57550G0104+00*
B57550G0234+00*
B57550G0145+00*
+ = Resistance tolerance
F =
±1%
G =
±2%
H =
±3%
J =
±5%
Leads
0 = dumet wires
2 = nickel-plated wires
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 at upper
category temperature
T: 300
°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
< 2%
No visible
damage
No visible
damage
< 2%
1) B
100/200
2) B
200/300
Please read
Important notes
and
Cautions and warnings
at the end of this document.
Page 3 of 76
Temperature measurement
Glass-encapsulated sensors
B57550
G550
R/T characteristics
B57550G0202F000
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
8401
B
0/100
= 3390 K, R
25
= 2000
Ω,
T
R
= 25
°C, ∆R
R
/R
R
=
±
1%
R
nom
[Ω]
R
min
[Ω]
R
max
[Ω]
∆R
R
/R
R
[±%]
∆T[±°C]
96473
70975
52779
39650
30075
23023
17779
13844
10865
8592
6844
5489
4432
3600
2943
2419
2000
1662
1389
1166
983.2
833.0
708.9
605.8
519.9
447.8
387.3
336.1
292.7
255.8
224.3
197.3
174.0
154.0
136.7
121.6
108.5
97.11
87.10
91360
67473
50359
37963
28891
22187
17185
13420
10561
8374
6687
5376
4350
3542
2902
2390
1980
1642
1369
1148
966.2
817.3
694.4
592.4
507.6
436.6
376.9
326.7
284.1
247.9
217.1
190.7
168.0
148.5
131.6
117.0
104.3
93.19
83.49
101590
74477
55200
41336
31258
23859
18373
14267
11169
8810
7001
5602
4513
3658
2984
2448
2020
1682
1408
1184
1000
848.8
723.5
619.3
532.2
459.1
397.6
345.5
301.3
263.7
231.5
203.8
180.1
159.5
141.7
126.3
112.8
101.0
90.71
5.3
4.9
4.6
4.3
3.9
3.6
3.3
3.1
2.8
2.5
2.3
2.1
1.8
1.6
1.4
1.2
1.0
1.2
1.4
1.6
1.7
1.9
2.1
2.2
2.4
2.5
2.7
2.8
2.9
3.1
3.2
3.3
3.5
3.6
3.7
3.8
3.9
4.0
4.1
0.8
0.8
0.8
0.8
0.7
0.7
0.7
0.6
0.6
0.5
0.5
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.5
0.6
0.6
0.7
0.8
0.9
0.9
1.0
1.1
1.2
1.2
1.3
1.4
1.5
1.6
1.7
1.7
1.8
1.9
α
(%/K)
6.2
6.0
5.8
5.6
5.4
5.3
5.1
4.9
4.8
4.6
4.5
4.3
4.2
4.1
4.0
3.9
3.8
3.6
3.5
3.5
3.4
3.3
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
2.2
2.2
Please read
Important notes
and
Cautions and warnings
at the end of this document.
Page 4 of 76
Temperature measurement
Glass-encapsulated sensors
B57550
G550
B57550G0202F000
R/T No.
T (°C)
140.0
145.0
150.0
155.0
160.0
165.0
170.0
175.0
180.0
185.0
190.0
195.0
200.0
205.0
210.0
215.0
220.0
225.0
230.0
235.0
240.0
245.0
250.0
255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
295.0
300.0
8401
B
0/100
= 3390 K, R
25
= 2000
Ω,
T
R
= 25
°C, ∆R
R
/R
R
=
±
1%
R
nom
[Ω]
R
min
[Ω]
R
max
[Ω]
∆R
R
/R
R
[±%]
∆T[±°C]
78.32
74.99
81.64
4.2
2.0
70.59
63.77
57.74
52.39
47.64
43.41
39.64
36.26
33.24
30.52
28.08
25.87
23.88
22.08
20.45
18.97
17.62
16.40
15.28
14.25
13.32
12.46
11.67
10.95
10.29
9.672
9.106
8.584
8.101
7.653
7.238
6.853
67.52
60.93
55.11
49.96
45.39
41.32
37.69
34.45
31.55
28.94
26.60
24.49
22.59
20.87
19.31
17.90
16.61
15.45
14.38
13.41
12.52
11.71
10.96
10.27
9.642
9.061
8.526
8.032
7.575
7.152
6.760
6.397
73.66
66.61
60.37
54.83
49.90
45.51
41.59
38.08
34.93
32.10
29.55
27.25
25.18
23.30
21.59
20.04
18.63
17.34
16.17
15.10
14.12
13.22
12.39
11.63
10.93
10.28
9.687
9.136
8.627
8.155
7.717
7.310
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.3
5.4
5.5
5.6
5.6
5.7
5.8
5.9
5.9
6.0
6.1
6.1
6.2
6.3
6.3
6.4
6.4
6.5
6.6
6.6
6.7
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
3.0
3.1
3.2
3.3
3.4
3.5
3.7
3.8
3.9
4.1
4.2
4.3
4.5
4.6
4.7
4.9
5.0
5.2
5.3
5.5
5.7
5.8
6.0
6.2
α
(%/K)
2.1
2.1
2.0
2.0
1.9
1.9
1.8
1.8
1.8
1.7
1.7
1.7
1.6
1.6
1.6
1.5
1.5
1.5
1.4
1.4
1.4
1.3
1.3
1.3
1.3
1.2
1.2
1.2
1.2
1.1
1.1
1.1
1.1
B57550G0202G000
R/T No.
T (°C)
55.0
8401
B
0/100
= 3390 K, R
25
= 2000
Ω,
T
R
= 25
°C, ∆R
R
/R
R
=
±
2%
R
nom
[Ω]
R
min
[Ω]
R
max
[Ω]
∆R
R
/R
R
[±%]
∆T[±°C]
96473
90354
102590
6.3
1.0
α
(%/K)
6.2
Please read
Important notes
and
Cautions and warnings
at the end of this document.
Page 5 of 76
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