EPCOS EPC B57551G1103 Datasheet

NTC thermistors for
temperature measurement

Glass-encapsulated sensors
with insulation

Series/Type: B57551G, B57551G1

Date: 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 B57551G, B57551G1

Glass-encapsulated sensors with insulation G551/G1551

Applications

Dimensional drawing

Temperature measurement

Features

Glass-encapsulated NTC thermistor,
heat-resistant and highly stable
Coating of glass body and leads for electrical
insulation
For temperature measurement up to
260 °C
Short response time
Small dimensions
Leads: dumet wires (copper-clad FeNi)

Options

Leads: nickel-plated dumet wires

Dimensions in mm

Alternative dimensions available on request

Delivery mode

Bulk

General technical data

Climatic category (IEC 60068-1) 55/260/56
Max. power (at 25 °C) P

32 mW

25

Resistance tolerance ∆RR/RR±1, ±2, ±3 %
Rated temperature T
Dissipation factor (in air) δ
Thermal cooling time constant (in air) τ
Heat capacity C
Insulation resistance
Test voltage

1) Medium: NaCl-solution; Temperature: Room temperature

1)

1)

(V = 100 V DC) R
(t = 1 s) V

th

c

25 °C

R

approx. 0.8 mW/K
approx. 9 s
approx. 7.2 mJ/K

th

≥ 100 MΩ

ins

500 V DC

test

Important notes at the end of this document.

Page 2 of 15Please read Cautions and warnings and

Temperature measurement B57551G, B57551G1

Glass-encapsulated sensors with insulation G551/G1551

Electrical specification and ordering codes

R

25

Ω

No. of R/T
characteristic

B

25/85

K

B

0/100

K

B
K

25/100

Ordering code

2 k 8401 3420 3390 ±1% 3436 B57551G0202+000

2 k 8401 3420 3390 ±1% 3436 B57551G0202+002
10 k 8307 3478 3450 3492 ±1% B57551G1103+000
10 k 8307 3478 3450 3492 ±1% B57551G1103+002
10 k 7003 3612 3586 3625 ±1% B57551G1103+005
10 k 7003 3612 3586 3625 ±1% B57551G1103+007
30 k 7002 3973 3944 3988 ±1% B57551G1303+005
30 k 7002 3973 3944 3988 ±1% B57551G1303+007

100 k 8304 4072 4036 4092 ±1% B57551G1104+000
100 k 8304 4072 4036 4092 ±1% B57551G1104+002

+ = Resistance tolerance

F = ±1%
G = ±2%
H = ±3%

The last three digits of the ordering code denote:
000 and 005 = dumet wires
002 and 007 = nickel-plated wires

Reliability data

Test Standard Test conditions ∆R25/R

Remarks

25

(typical)

Storage in
dry heat

IEC
60068-2-2

Storage at upper
category temperature

< 3% No visible

damage

T: 260 °C
t: 1000 h

Storage in damp
heat, steady state

IEC
60068-2-67

Temperature of air: 85 °C
Relative humidity of air: 85%

< 2% No visible

damage

Duration: 56 days

Rapid temperature
cycling

IEC
60068-2-14

Lower test temperature: 55 °C
Upper test temperature: 200 °C

< 2% No visible

damage

Number of cycles: 1000

Important notes at the end of this document.

Page 3 of 15Please read Cautions and warnings and

Temperature measurement B57551G, B57551G1

Glass-encapsulated sensors with insulation G551/G1551

R/T characteristics

R/T No.
T (°C) B

7002 7003 8304

= 3988 K B

25/100

RT/R

25

α (%/K) RT/R

= 3625 K B

25/100

25

25/100

α (%/K) RT/R

= 4092 K

25

55.0 96.33 7.4 63.225 6.7 100.11 7.4
50.0 66.866 7.2 45.46 6.5 69.56 7.2
45.0 47.037 6.9 33.07 6.3 48.945 6.9
40.0 33.508 6.7 24.324 6.0 34.853 6.7
35.0 24.156 6.4 18.081 5.8 25.102 6.5

30.0 17.613 6.2 13.575 5.6 18.275 6.2
25.0 12.98 6.0 10.29 5.4 13.443 6.0
20.0 9.6643 5.8 7.8716 5.3 9.9853 5.9
15.0 7.2656 5.6 6.0739 5.1 7.4867 5.7
10.0 5.5129 5.4 4.7258 4.9 5.6636 5.5

5.0 4.22 5.3 3.7062 4.8 4.3212 5.3

0.0 3.2575 5.1 2.9287 4.6 3.324 5.2

5.0 2.5348 4.9 2.3311 4.5 2.5769 5.0

10.0 1.9876 4.8 1.8684 4.4 2.0127 4.9

15.0 1.5699 4.6 1.5075 4.2 1.5834 4.7

20.0 1.2488 4.5 1.224 4.1 1.2542 4.6

25.0 1.0000 4.4 1.0000 4.0 1.0000 4.5

30.0 0.80594 4.3 0.82176 3.9 0.80239 4.3

35.0 0.65355 4.1 0.67909 3.8 0.64776 4.2

40.0 0.53312 4.0 0.56422 3.7 0.52598 4.1

45.0 0.43735 3.9 0.47122 3.6 0.4295 4.0

50.0 0.36074 3.8 0.3955 3.5 0.35262 3.9

55.0 0.29911 3.7 0.33355 3.4 0.291 3.8

60.0 0.24925 3.6 0.2826 3.3 0.24136 3.7

65.0 0.20872 3.5 0.24049 3.2 0.20114 3.6

70.0 0.17558 3.4 0.20553 3.1 0.16841 3.5

75.0 0.14837 3.3 0.17637 3.0 0.14164 3.4

80.0 0.12592 3.2 0.15195 2.9 0.11963 3.3

85.0 0.10731 3.2 0.13141 2.9 0.10147 3.3

90.0 0.091816 3.1 0.11406 2.8 0.086407 3.2

95.0 0.078862 3.0 0.099352 2.7 0.073867 3.1

100.0 0.067988 2.9 0.086837 2.7 0.063383 3.0

105.0 0.058824 2.9 0.076149 2.6 0.054584 3.0

110.0 0.051071 2.8 0.066989 2.5 0.04717 2.9

115.0 0.044489 2.7 0.059112 2.5 0.040901 2.8

120.0 0.03888 2.7 0.052316 2.4 0.035581 2.8

125.0 0.034084 2.6 0.046433 2.4 0.03105 2.7

130.0 0.02997 2.5 0.041327 2.3 0.027179 2.6

135.0 0.02643 2.5 0.03688 2.3 0.023861 2.6

140.0 0.023373 2.4 0.032998 2.2 0.021008 2.5

145.0 0.020727 2.4 0.029598 2.2 0.018548 2.5

150.0 0.018429 2.3 0.026612 2.1 0.016419 2.4

155.0 0.016427 2.3 0.023984 2.1 0.014573 2.4

α (%/K)

Important notes at the end of this document.

Page 4 of 15Please read Cautions and warnings and

Temperature measurement B57551G, B57551G1

Glass-encapsulated sensors with insulation G551/G1551

R/T No.
T (°C) B

7002 7003 8304

= 3988 K B

25/100

RT/R

25

α (%/K) RT/R

= 3625 K B

25/100

25

25/100

α (%/K) RT/R

= 4092 K

25

160.0 0.014679 2.2 0.021665 2.0 0.012967 2.3

165.0 0.013149 2.2 0.019613 2.0 0.011566 2.3

170.0 0.011806 2.1 0.017793 1.9 0.010341 2.2

175.0 0.010623 2.1 0.016176 1.9 0.0092664 2.2

180.0 0.0095804 2.0 0.014735 1.8 0.0083224 2.1

185.0 0.0086582 2.0 0.013448 1.8 0.0074907 2.1

190.0 0.0078408 2.0 0.012297 1.8 0.0067564 2.0

195.0 0.0071148 1.9 0.011265 1.7 0.0061064 2.0

200.0 0.0064685 1.9 0.010338 1.7 0.0055299 2.0

205.0 0.005892 1.8 0.009504 1.7 0.0050175 1.9

210.0 0.0053767 1.8 0.0087516 1.6 0.0045611 1.9

215.0 0.0049152 1.8 0.0080718 1.6 0.0041537 1.9

220.0 0.0045011 1.7 0.0074567 1.6 0.0037895 1.8

225.0 0.0041287 1.7 0.0068989 1.5 0.0034631 1.8

230.0 0.0037934 1.7 0.0063925 1.5 0.0031701 1.8

235.0 0.0034908 1.6 0.0059318 1.5 0.0029067 1.7

240.0 0.0032173 1.6 0.005512 1.5 0.0026693 1.7

245.0 0.0029697 1.6 0.005129 1.4 0.0024551 1.7

250.0 0.0027451 1.6 0.004779 1.4 0.0022615 1.6

255.0 0.0025412 1.5 0.0044586 1.4 0.0020862 1.6

260.0 0.0023556 1.5 0.004165 1.4 0.0019273 1.6

265.0 0.0021865 1.5 0.0038955 1.3 0.0017829 1.5

270.0 0.0020323 1.5 0.0036478 1.3 0.0016516 1.5

275.0 0.0018913 1.4 0.0034199 1.3 0.0015319 1.5

280.0 0.0017623 1.4 0.0032098 1.3 0.0014228 1.5

285.0 0.0016441 1.4 0.003016 1.2 0.0013231 1.4

290.0 0.0015357 1.4 0.002837 1.2 0.0012319 1.4

295.0 0.001436 1.3 0.0026714 1.2 0.0011483 1.4

300.0 0.0013444 1.3 0.002518 1.2 0.0010716 1.4

α (%/K)

Important notes at the end of this document.

Page 5 of 15Please read Cautions and warnings and