EPCOS EPC B57871S0103 Datasheet
NTC thermistors for
temperature measurement
Leaded NTCs,
lead spacing 2.5 mm
Series/Type: B57871
Date: March 2006
© EPCOS AG 2006. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained thereinwithout EPCOS' prior express consent is prohibited.
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
Applications
Dimensional drawing
Temperature measurement
Features
High measuring accurancy
Cost-effective
Rugged design, epoxy resin encapsulation
Tinned copper leads
Lead spacing 2.5 mm
Options
Flexible coating of head and wires available on
request
Delivery mode
Bulk (standard),
cardboard tape, reeled or in Ammo pack
Dimensions in mm
Approx. weight 120 mg
General technical data
Climatic category (IEC 60068-1) 55/155/56
Max. power (at 25 °C) P
60 mW
25
Resistance tolerance ∆RR/RR±1, ±3, ±5 %
Rated temperature T
Dissipation factor (in air) δ
Thermal cooling time constant (in air) τ
Heat capacity C
th
c
25 °C
R
approx. 3.8 mW/K
approx. 7.5 s
approx. 28.5 mJ/K
th
Electrical specification and ordering codes
R
25
Ω
No. of R/T
characteristic
B
K
25/100
Ordering code
2.1 k 1008 3560 ±1% B57871S0212+000
10 k
10 k
12 k
30 k
+ = Resistance tolerance
F = ±1%
H = ±3%
J = ±5%
Cautions and warnings at the end of this document.
8016 3988 ±1% B57871S0103+001
2908 3460 ±1% B57871S0103+002
2901 3760 ±1% B57871S0123+000
8018 3964 ±1% B57871S0303+000
Page 2 of 25Please read Important notes and
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
Reliability data
Test Standard Test conditions ∆R25/R
(typical)
Storage in
dry heat
IEC
60068-2-2
Storage at upper
category temperature
< 2% No visible
T: 155 °C
t: 1000 h
Storage in damp
heat, steady state
IEC
60068-2-78
Temperature of air: 40 °C
Relative humidity of air: 93%
< 1% No visible
Duration: 56 days
Rapid temperature
cycling
IEC
60068-2-14
Lower test temperature: 55 °C
Upper test temperature: 155 °C
< 2% No visible
Number of cycles: 100
Endurance P
: 60 mW
max
< 3% No visible
t: 1000 h
Long-term stability
(empirical value)
Temperature: 70 °C
t: 10000 h
< 3% No visible
Remarks
25
damage
damage
damage
damage
damage
Cautions and warnings at the end of this document.
Page 3 of 25Please read Important notes and
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
R/T characteristics
B57871S0212F000
R/T No. 1008
T (°C) B
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
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 1%
25/100
R
[Ω] R
nom
111520 105460
82567 78386
61583 58680
46263 44237
34999 33579
26661 25661
20423 19717
15786 15285
12254 11899
9594 9341
7570 7390
6020 5891
4811 4719
3872 3807
3133 3087
2552 2520
2100 2079
1742 1721
1441 1421
1199 1180
1008
[Ω] R
min
990.2
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
117570
86747
64486
48289
36420
27661
21128
16287
12609
9847
7751
6149
4902
3937
3179
2584
2121
1764
1462
1219
1026
5.4 0.9 6.1
5.1 0.8 6.0
4.7 0.8 5.8
4.4 0.8 5.7
4.1 0.7 5.5
3.8 0.7 5.4
3.5 0.7 5.2
3.2 0.6 5.1
2.9 0.6 4.9
2.6 0.5 4.8
2.4 0.5 4.7
2.1 0.5 4.5
1.9 0.4 4.4
1.7 0.4 4.3
1.5 0.4 4.1
1.3 0.3 4.0
1.0 0.3 3.9
1.2 0.3 3.8
1.4 0.4 3.7
1.6 0.5 3.6
1.8 0.5 3.5
50.0 851.4 834.6 868.2 2.0 0.6 3.4
55.0 717.6 702.2 732.9 2.1 0.6 3.3
60.0 608.0 594.0 622.0 2.3 0.7 3.2
65.0 519.0 506.2 531.8 2.5 0.8 3.1
70.0 444.8 433.2 456.5 2.6 0.9 3.1
75.0 382.1 371.5 392.6 2.8 0.9 3.0
80.0 329.3 319.7 338.9 2.9 1.0 2.9
85.0 285.4 276.7 294.1 3.1 1.1 2.8
90.0 248.3 240.4 256.2 3.2 1.2 2.8
95.0 217.1 209.9 224.3 3.3 1.2 2.7
100.0 190.6 184.0 197.1 3.4 1.3 2.6
105.0 167.2 161.3 173.2 3.6 1.4 2.6
110.0 147.2 141.8 152.7 3.7 1.5 2.5
115.0 130.0 125.0 134.9 3.8 1.6 2.4
120.0 115.0 110.5 119.6 3.9 1.6 2.4
125.0 102.3 98.14 106.4 4.0 1.7 2.3
130.0 91.17 87.38 94.96 4.2 1.8 2.3
135.0 81.32 77.85 84.79 4.3 1.9 2.2
Cautions and warnings at the end of this document.
Page 4 of 25Please read Important notes and
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
B57871S0212F000
R/T No. 1008
T (°C) B
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 1%
25/100
R
[Ω] R
nom
[Ω] R
min
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
140.0 72.69 69.51 75.87 4.4 2.0 2.2
145.0 65.20 62.28 68.12 4.5 2.1 2.1
150.0 58.61 55.93 61.29 4.6 2.2 2.1
155.0 52.91 50.43 55.38 4.7 2.3 2.0
B57871S0212H000
R/T No. 1008
T (°C) B
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
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 3%
25/100
R
[Ω] R
nom
111520 103230
82567 76735
61583 57449
46263 43312
34999 32879
26661 25128
20423 19308
15786 14969
12254 11654
9594 9149
7570 7238
6020 5770
4811 4622
3872 3729
3133 3025
2552 2469
2100 2037
1742 1686
1441 1392
1199 1156
1008
[Ω] R
min
970.0
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
119800
88399
65717
49214
37120
28194
21537
16602
12854
10039
7903
6269
4999
4014
3242
2635
2163
1799
1491
1243
1047
7.4 1.2 6.1
7.1 1.2 6.0
6.7 1.2 5.8
6.4 1.1 5.7
6.1 1.1 5.5
5.8 1.1 5.4
5.5 1.0 5.2
5.2 1.0 5.1
4.9 1.0 4.9
4.6 1.0 4.8
4.4 0.9 4.7
4.1 0.9 4.5
3.9 0.9 4.4
3.7 0.9 4.3
3.5 0.8 4.1
3.3 0.8 4.0
3.0 0.8 3.9
3.2 0.9 3.8
3.4 0.9 3.7
3.6 1.0 3.6
3.8 1.1 3.5
50.0 851.4 817.6 885.3 4.0 1.2 3.4
55.0 717.6 687.9 747.3 4.1 1.2 3.3
60.0 608.0 581.8 634.2 4.3 1.3 3.2
65.0 519.0 495.8 542.2 4.5 1.4 3.1
70.0 444.8 424.3 465.4 4.6 1.5 3.1
75.0 382.1 363.9 400.3 4.8 1.6 3.0
80.0 329.3 313.1 345.5 4.9 1.7 2.9
85.0 285.4 271.0 299.8 5.1 1.8 2.8
90.0 248.3 235.4 261.1 5.2 1.9 2.8
Cautions and warnings at the end of this document.
Page 5 of 25Please read Important notes and
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
B57871S0212H000
R/T No. 1008
T (°C) B
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 3%
25/100
R
[Ω] R
nom
[Ω] R
min
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
95.0 217.1 205.6 228.7 5.3 2.0 2.7
100.0 190.6 180.2 200.9 5.4 2.1 2.6
105.0 167.2 157.9 176.6 5.6 2.2 2.6
110.0 147.2 138.8 155.6 5.7 2.3 2.5
115.0 130.0 122.4 137.5 5.8 2.4 2.4
120.0 115.0 108.2 121.9 5.9 2.5 2.4
125.0 102.3 96.10 108.5 6.0 2.6 2.3
130.0 91.17 85.56 96.79 6.2 2.7 2.3
135.0 81.32 76.22 86.41 6.3 2.8 2.2
140.0 72.69 68.06 77.33 6.4 2.9 2.2
145.0 65.20 60.98 69.42 6.5 3.0 2.1
150.0 58.61 54.76 62.47 6.6 3.2 2.1
155.0 52.91 49.37 56.44 6.7 3.3 2.0
B57871S0212J000
R/T No. 1008
T (°C) B
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
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 5%
25/100
R
[Ω] R
nom
111520 101000
82567 75084
61583 56217
46263 42387
34999 32179
26661 24595
20423 18900
15786 14654
12254 11408
9594 8957
7570 7087
6020 5650
4811 4526
3872 3652
3133 2962
2552 2418
2100 1995
1742 1651
1441 1363
1199 1132
1008
[Ω] R
min
949.8
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
122030
90050
66949
50139
37820
28728
21945
16918
13100
10231
8054
6389
5095
4092
3304
2687
2205
1834
1520
1267
1067
9.4 1.5 6.1
9.1 1.5 6.0
8.7 1.5 5.8
8.4 1.5 5.7
8.1 1.5 5.5
7.8 1.4 5.4
7.5 1.4 5.2
7.2 1.4 5.1
6.9 1.4 4.9
6.6 1.4 4.8
6.4 1.4 4.7
6.1 1.4 4.5
5.9 1.3 4.4
5.7 1.3 4.3
5.5 1.3 4.1
5.3 1.3 4.0
5.0 1.3 3.9
5.2 1.4 3.8
5.4 1.5 3.7
5.6 1.6 3.6
5.8 1.7 3.5
Cautions and warnings at the end of this document.
Page 6 of 25Please read Important notes and
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
B57871S0212J000
R/T No. 1008
T (°C) B
= 3560 K, R25= 2100 Ω, TR= 25 °C, ∆RR/RR= ± 5%
25/100
R
[Ω] R
nom
[Ω] R
min
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
50.0 851.4 800.6 902.3 6.0 1.8 3.4
55.0 717.6 673.5 761.6 6.1 1.9 3.3
60.0 608.0 569.7 646.3 6.3 2.0 3.2
65.0 519.0 485.5 552.5 6.5 2.1 3.1
70.0 444.8 415.4 474.3 6.6 2.2 3.1
75.0 382.1 356.2 407.9 6.8 2.3 3.0
80.0 329.3 306.5 352.0 6.9 2.4 2.9
85.0 285.4 265.3 305.5 7.1 2.5 2.8
90.0 248.3 230.4 266.1 7.2 2.6 2.8
95.0 217.1 201.2 233.0 7.3 2.7 2.7
100.0 190.6 176.4 204.8 7.4 2.8 2.6
105.0 167.2 154.6 179.9 7.6 3.0 2.6
110.0 147.2 135.9 158.5 7.7 3.1 2.5
115.0 130.0 119.8 140.1 7.8 3.2 2.4
120.0 115.0 105.9 124.2 7.9 3.3 2.4
125.0 102.3 94.05 110.5 8.0 3.4 2.3
130.0 91.17 83.73 98.61 8.2 3.6 2.3
135.0 81.32 74.59 88.04 8.3 3.7 2.2
140.0 72.69 66.61 78.78 8.4 3.8 2.2
145.0 65.20 59.67 70.73 8.5 4.0 2.1
150.0 58.61 53.58 63.64 8.6 4.1 2.1
155.0 52.91 48.32 57.50 8.7 4.3 2.0
B57871S0103F001
R/T No. 8016
T (°C) B
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
Cautions and warnings at the end of this document.
= 3988 K, R25= 10000 Ω, TR= 25 °C, ∆RR/RR= ± 1%
25/100
R
[Ω] R
nom
[Ω] R
min
963050 905700
670100 632940
471690 447380
336500 320420
242590 231870
177000 169790
130370 125490
97070 93743
72929 70652
55330 53765
42315 41237
32650 31907
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
1020400
707260
496000
352580
253310
184210
135250
100400
75206
56895
43393
33393
Page 7 of 25Please read Important notes and
6.0 0.8 7.4
5.5 0.8 7.1
5.2 0.7 6.9
4.8 0.7 6.7
4.4 0.7 6.4
4.1 0.7 6.2
3.7 0.6 6.0
3.4 0.6 5.8
3.1 0.6 5.6
2.8 0.5 5.4
2.5 0.5 5.3
2.3 0.4 5.1
Temperature measurement B57871
Leaded NTCs, lead spacing 2.5 mm S871
B57871S0103F001
R/T No. 8016
T (°C) B
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
= 3988 K, R25= 10000 Ω, TR= 25 °C, ∆RR/RR= ± 1%
25/100
R
[Ω] R
nom
25388 24877
19900 19550
15708 15470
12490 12330
10000 9900
8057 7955
6531 6434
5327 5237
4369 4286
3603 3528
2986 2918
2488 2427
2083 2028
1752 1703
1481 1437
1258 1219
1072 1037
[Ω] R
min
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
25898
20250
15946
12650
10100
8159
6628
5417
4451
3678
3054
2549
2138
1801
1525
1297
1108
2.0 0.4 5.0
1.8 0.4 4.8
1.5 0.3 4.7
1.3 0.3 4.5
1.0 0.2 4.4
1.3 0.3 4.3
1.5 0.4 4.1
1.7 0.4 4.0
1.9 0.5 3.9
2.1 0.5 3.8
2.3 0.6 3.7
2.5 0.7 3.6
2.6 0.8 3.5
2.8 0.8 3.4
3.0 0.9 3.3
3.1 1.0 3.2
3.3 1.0 3.2
90.0 917.7 886.1 949.3 3.4 1.1 3.1
95.0 788.5 760.2 816.9 3.6 1.2 3.0
100.0 680.0 654.6 705.4 3.7 1.3 2.9
105.0 588.6 565.8 611.4 3.9 1.4 2.9
110.0 511.2 490.7 531.7 4.0 1.4 2.8
115.0 445.4 426.9 463.9 4.2 1.5 2.7
120.0 389.3 372.6 406.0 4.3 1.6 2.7
125.0 341.7 326.6 356.8 4.4 1.7 2.6
130.0 300.9 287.3 314.5 4.5 1.8 2.5
135.0 265.4 253.1 277.8 4.7 1.9 2.5
140.0 234.8 223.6 246.0 4.8 2.0 2.4
145.0 208.3 198.1 218.5 4.9 2.1 2.4
150.0 185.3 176.0 194.6 5.0 2.2 2.3
155.0 165.3 156.9 173.8 5.1 2.3 2.3
B57871S0103H001
R/T No. 8016
T (°C) B
55.0
50.0
45.0
Cautions and warnings at the end of this document.
= 3988 K, R25= 10000 Ω, TR= 25 °C, ∆RR/RR= ± 3%
25/100
R
[Ω] R
nom
[Ω] R
min
963050 886440
670100 619540
471690 437940
[Ω] ∆RR/RR[±%] ∆T[±°C] α (%/K)
max
1039700
720660
505430
Page 8 of 25Please read Important notes and
8.0 1.1 7.4
7.5 1.1 7.1
7.2 1.0 6.9
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