Datasheet
R/T characteristics
R/T No.
4003 4012 4901
T (°C) B
25/100
= 4450 K B
25/100
= 4355 K B
25/100
= 3950 K
R
T
/R
25
α (%/K) R
T
/R
25
α (%/K) R
T
/R
25
α (%/K)
55.0 103.81 6.8 115.76 7.5 87.89 7.1
50.0 73.707 6.7 80.102 7.2 61.759 6.9
45.0 52.723 6.6 56.067 7.0 43.934 6.7
40.0 37.988 6.5 39.677 6.8 31.618 6.5
35.0 27.565 6.4 28.374 6.6 23.006 6.3
30.0 20.142 6.2 20.496 6.4 16.915 6.1
25.0 14.801 6.1 14.949 6.2 12.555 5.9
20.0 10.976 5.9 11.004 6.0 9.4143 5.7
15.0 8.1744 5.8 8.1721 5.9 7.1172 5.5
10.0 6.1407 5.7 6.1208 5.7 5.4308 5.4
5.0 4.6331 5.5 4.6219 5.5 4.1505 5.2
0.0 3.5243 5.4 3.5176 5.4 3.2014 5.0
5.0 2.6995 5.3 2.6973 5.2 2.5011 4.9
10.0 2.0831 5.1 2.0834 5.1 1.9691 4.7
15.0 1.6189 5.0 1.6205 5.0 1.5618 4.6
20.0 1.2666 4.9 1.2689 4.8 1.2474 4.5
25.0 1.0000 4.7 1.0000 4.7 1.0000 4.3
30.0 0.78351 4.6 0.79302 4.6 0.808 4.2
35.0 0.62372 4.5 0.63266 4.5 0.6569 4.1
40.0 0.49937 4.4 0.50765 4.3 0.5372 4.0
45.0 0.40218 4.3 0.40961 4.2 0.44235 3.9
50.0 0.32557 4.2 0.33229 4.1 0.3661 3.8
55.0 0.26402 4.1 0.27096 4.0 0.30393 3.7
60.0 0.21527 4.0 0.22206 3.9 0.25359 3.6
65.0 0.17693 3.9 0.18287 3.8 0.21283 3.5
70.0 0.14616 3.8 0.1513 3.7 0.17942 3.4
75.0 0.12097 3.7 0.12574 3.7 0.15183 3.3
80.0 0.10053 3.7 0.10496 3.6 0.12901 3.2
85.0 0.083761 3.6 0.087977 3.5 0.11002 3.1
90.0 0.070039 3.5 0.074045 3.4 0.094179 3.1
95.0 0.058937 3.4 0.062565 3.3 0.080896 3.0
100.0 0.049777 3.4 0.053067 3.3 0.069722 2.9
105.0 0.042146 3.3 0.045177 3.2 0.060397 2.9
110.0 0.035803 3.2 0.038597 3.1 0.052493 2.8
115.0 0.030504 3.2 0.03309 3.0 0.045733 2.7
120.0 0.026067 3.1 0.028464 3.0 0.039963 2.7
125.0 0.022332 3.0 0.024564 2.9 0.035059 2.6
130.0 0.019186 3.0
0.030844 2.6
135.0 0.016515 2.9
0.027192 2.5
140.0 0.014253 2.9
0.024034 2.4
145.0 0.012367 2.8
0.021285 2.4
150.0 0.010758 2.8
0.018895 2.4
155.0 0.0093933 2.7
0.016813 2.3
Temperature measurement and compensation B57891M
Leaded NTC thermistors, lead spacing 2.5 mm M891
Page 8 of 28Please read Cautions and warnings and
Important notes at the end of this document.