EPCOS EPC B57540G1103 Datasheet

NTC thermistors for
temperature measurement

Glass-encapsulated sensors,
standard type

Series/Type: B57540G, B57540G1

Date: February 2009

The following products presented in this data sheet are being withdrawn.

Ordering Code Substitute Product Date of

B57540G0145* B57540G1104* 2012-03-23 2012-06-28 2012-09-28
B57540G0234* B57540G1104* 2012-03-23 2012-06-28 2012-09-28

For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.

© EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.

Withdrawal

Deadline Last
Orders

Last Shipments

Temperature measurement B57540G, B57540G1

Glass-encapsulated sensors G540/G1540

Applications

Dimensional drawing

Temperature measurement

Features

Glass-encapsulated, heat-resistive and
highly stable
For temperature measurement up to 250 °C
Very short response time
Small dimensions
Leads: dumet wires (copper-clad FeNi)

Options

Leads: nickel-plated dumet wires
Alternative dimensions available on request

Delivery mode

Dimensions in mm

Bulk

General technical data

Climatic category (IEC 60068-1) 55/250/56
Max. power (at 25 °C) P

18 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

th

c

25 °C

R

approx. 0.4 mW/K
approx. 3 s
approx. 1.3 mJ/K

th

Important notes at the end of this document.

Page 2 of 18Please read Cautions and warnings and

Temperature measurement B57540G, B57540G1

Glass-encapsulated sensors G540/G1540

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

5 k 8402 3480 3450 ±1% 3497 B57540G0502+000

5 k 8402 3480 3450 ±1% 3497 B57540G0502+002
10 k 7003 3612 3586 3625 ±1% B57540G1103+005
10 k 7003 3612 3586 3625 ±1% B57540G1103+007
10 k 8307 3478 3450 3492 ±1% B57540G1103+000
10 k 8307 3478 3450 3492 ±1% B57540G1103+002
20 k 8415 3992 3970 ±1% 4006 B57540G0203+000
20 k 8415 3992 3970 ±1% 4006 B57540G0203+002
30 k 7002 3973 3944 3988 ±1% B57540G1303+005
30 k 7002 3973 3944 3988 ±1% B57540G1303+007
50 k 8403 3992 3970 ±1% 4006 B57540G0503+000
50 k 8403 3992 3970 ±1% 4006 B57540G0503+002

100 k 8304 4072 4036 4092 ±1% B57540G1104+000
100 k 8304 4072 4036 4092 ±1% B57540G1104+002
230 k 8405 4240 4537 ±2%1)4264 B57540G0234+000

230 k 8405 4240 4537 ±2%1)4264 B57540G0234+002
1400 k 8406 4557 5133 ±2%2)4581 B57540G0145+000
1400 k 8406 4557 5133 ±2%2)4581 B57540G0145+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

1) B

100/200

2) B

200/300

Important notes at the end of this document.

Page 3 of 18Please read Cautions and warnings and

Temperature measurement B57540G, B57540G1

Glass-encapsulated sensors G540/G1540

Reliability data

Test Standard Test conditions ∆R25/R

(typical)

Storage in
dry heat

IEC
60068-2-2

Storage at upper
category temperature

< 3% No visible

T: 250 °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

Duration: 56 days

Rapid temperature
cycling

IEC
60068-2-14

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

< 2% No visible

Number of cycles: 1000

Remarks

25

damage

damage

damage

Important notes at the end of this document.

Page 4 of 18Please read Cautions and warnings and

Temperature measurement B57540G, B57540G1

Glass-encapsulated sensors G540/G1540

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 5 of 18Please read Cautions and warnings and

Temperature measurement B57540G, B57540G1

Glass-encapsulated sensors G540/G1540

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 6 of 18Please read Cautions and warnings and