1995 Feb 03 2
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
FEATURES
•Accurate over a wide temperature
range
•High stability (tolerance on B-value
between ±2.5% and ±0.75%) over
a long life
•Excellent price/performance ratio
•For mechanical fixing in a housing
or soldering directly to
‘non-standard’ leads.
APPLICATION
•Temperature sensing and control.
DESCRIPTION
These thermistors have a negative
temperature coefficient. The device
consists of a metallized square chip.
QUICK REFERENCE DATA
PARAMETER VALUE UNIT
Resistance value at 25 °C (R25) 2.2 to 470 kΩ
Tolerance on R25-value ±1; ±2; ±3; ±5%
B
25/85-value 3740 to 4570 K
Tolerance on B25/85-value ±2.5 to ±0.75 %
Maximum dissipation 500 mW
Response time <1.2 s
Climatic category 40/125/56
Mass see Table 1
PACKAGING
The naked chips are placed in sealed
polythene bags and packed in
cardboard boxes. The smallest
packing quantity is 5000 units.
MECHANICAL DATA
Marking
None.
Mounting
By reflow or wave soldering in any
position or mechanical fixing.
The use of ultrasonic soldering is not
recommended.
Outline
Fig.1 Component outline.
For dimensions see Table 1.
handbook, halfpage
MLC901
D
DTmax
1995 Feb 03 3
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, measurements are in accordance with
“IEC publication 539”
, see also Table 1.
PARAMETER VALUE UNIT
Resistance value at 25 °C (R25) 2.2 to 470 kΩ
Standard selection tolerances ±1; ±2; ±3; ±5%
Climatic category 40/125/56
Maximum dissipation 500 mW
Operating temperature range:
at zero dissipation (continuously) −40 to +125 °C
for short periods ≤150 °C
at maximum dissipation 0 to +55 °C
Derating
Fig.2 Power derating curve.
MLC342
05540 85 125
T ( C)
o
100
0
P
(%)
amb
1995 Feb 03 4
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 1 R25-values, TC, mass, dimensions and catalogue numbers
Note
1. Replace dot in last 5 digits of catalogue number by a number according to the following list and depending on
tolerance on required R25-value:
a) 5 for a tolerance of ±1%
b) 4 for a tolerance of ±2%
c) 6 for a tolerance of ±3%
d) 3 for a tolerance of ±5%.
R25
(Ω)TC
(%/K) MASS
(g) D
(mm) Tmax.
(mm)
B25/85 CATALOGUE
NUMBER 2322 640(1)
KTOL.
(%)
2200 4.37 0.016 2.3 ±0.4 1.3 3977 ±0.75 0.222
2700 4.37 0.014 2.3 ±0.4 3977 ±0.75 0.272
3300 4.37 0.011 2.0 ±0.4 3977 ±0.75 0.332
4700 4.37 0.008 2.0 ±0.4 3977 ±0.75 0.472
5000 4.37 0.008 2.0 ±0.4 3977 ±0.75 0.502
6000 4.37 0.008 2.0 ±0.4 3977 ±0.75 0.602
6800 4.37 0.011 2.0 ±0.4 3977 ±0.75 0.682
8000 4.37 0.011 2.0 ±0.4 3977 ±0.75 0.802
10000 4.37 0.016 2.0 ±0.4 3977 ±0.75 0.103
12000 4.10 0.014 2.0 ±0.4 3740 ±2.0 0.123
15000 4.10 0.011 2.0 ±0.4 3740 ±2.0 0.153
22000 4.10 0.008 2.0 ±0.4 3740 ±2.0 0.223
33000 4.46 0.011 2.0 ±0.4 4090 ±1.5 0.333
47000 4.46 0.016 2.0 ±0.4 4090 ±1.5 0.473
68000 4.57 0.012 2.0 ±0.4 4190 ±1.5 0.683
100000 4.57 0.008 2.0 ±0.4 4190 ±1.5 0.104
150000 4.75 0.011 2.0 ±0.4 4370 ±2.5 0.154
220000 4.75 0.008 2.0 ±0.4 4370 ±2.5 0.224
330000 4.95 0.014 2.0 ±0.4 4570 ±1.5 0.334
470000 4.95 0.014 2.0 ±0.4 4570 ±1.5 0.474
1995 Feb 03 5
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 2 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.222 0.272 0.332 0.472
−40 33.21 2.66 6.57 73.06 89.67 109.6 156.1
−35 23.99 2.41 6.36 52.78 64.77 79.17 112.8
−30 17.52 2.17 6.15 38.55 47.31 57.82 82.35
−25 12.93 1.94 5.95 28.44 34.91 42.67 60.77
−20 9.636 1.71 5.76 21.20 26.02 31.80 45.30
−15 7.250 1.50 5.58 15.95 19.58 23.93 34.08
−10 5.505 1.29 5.40 12.11 14.86 18.16 25.87
−5 4.216 1.08 5.24 9.275 11.38 13.91 19.81
0 3.255 0.89 5.08 7.162 8.790 10.74 15.30
5 2.534 0.70 4.92 5.575 6.842 8.362 11.91
10 1.987 0.52 4.78 4.372 5.366 6.558 9.340
15 1.570 0.34 4.64 3.454 4.239 5.181 7.378
20 1.249 0.17 4.50 2.747 3.372 4.121 5.869
25 1.000 0.00 4.37 2.200 2.700 3.300 4.700
30 0.8059 0.16 4.25 1.773 2.176 2.660 3.788
35 0.6535 0.32 4.13 1.438 1.764 2.156 3.072
40 0.5330 0.47 4.02 1.173 1.439 1.759 2.505
45 0.4372 0.62 3.91 0.9618 1.180 1.443 2.055
50 0.3605 0.77 3.80 0.7932 0.973 1.190 1.694
55 0.2989 0.91 3.70 0.6575 0.807 0.9863 1.405
60 0.2490 1.05 3.60 0.5478 0.672 0.8217 1.170
65 0.2084 1.18 3.51 0.4586 0.562 0.6879 0.9797
70 0.1753 1.31 3.42 0.3857 0.473 0.5785 0.8239
75 0.1481 1.44 3.33 0.3258 0.399 0.4887 0.6960
80 0.1256 1.57 3.25 0.2764 0.339 0.4146 0.5905
85 0.1070 1.69 3.16 0.2355 0.289 0.3532 0.5031
90 0.09154 1.81 3.09 0.2014 0.247 0.3021 0.4303
95 0.07860 1.93 3.01 0.1729 0.212 0.2594 0.3694
100 0.06773 2.04 2.94 0.1490 0.182 0.2235 0.3183
105 0.05858 2.15 2.87 0.1289 0.158 0.1933 0.2753
110 0.05083 2.26 2.80 0.1118 0.137 0.1677 0.2389
115 0.04426 2.37 2.73 0.0974 0.1195 0.1461 0.2080
120 0.03866 2.47 2.67 0.0851 0.1044 0.1276 0.1817
125 0.03387 2.57 2.61 0.0745 0.0915 0.1118 0.1592
130 0.02977 2.67 2.55 0.0655 0.0804 0.0982 0.1399
135 0.02624 2.77 2.49 0.0577 0.0709 0.0866 0.1233
140 0.02319 2.86 2.43 0.0510 0.0626 0.0765 0.1090
145 0.02055 2.96 2.38 0.0452 0.0555 0.0678 0.0966
150 0.01826 3.05 2.33 0.0402 0.0493 0.0603 0.0858
1995 Feb 03 6
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 3 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.502 0.602 0.682 0.802 0.103
−40 33.21 2.66 6.57 166.1 199.3 225.8 265.7 332.1
−35 23.99 2.41 6.36 120.0 143.9 163.1 191.9 240.0
−30 17.52 2.17 6.15 87.60 105.1 119.1 140.2 175.2
−25 12.93 1.94 5.95 64.65 77.57 87.92 103.4 129.3
−20 9.636 1.71 5.76 48.18 57.82 65.53 77.09 96.36
−15 7.250 1.50 5.58 36.25 43.50 49.30 58.00 72.50
−10 5.505 1.29 5.40 27.52 33.03 37.43 44.04 55.05
−5 4.216 1.08 5.24 21.08 25.30 28.67 33.73 42.16
0 3.255 0.89 5.08 16.28 19.53 22.14 26.04 32.56
5 2.534 0.70 4.92 12.67 15.20 17.23 20.27 25.34
10 1.987 0.52 4.78 9.936 11.92 13.51 15.90 19.87
15 1.570 0.34 4.64 7.849 9.419 10.67 12.56 15.70
20 1.249 0.17 4.50 6.244 7.493 8.492 9.990 12.49
25 1.000 0.00 4.37 5.000 6.000 6.800 8.000 10.00
30 0.8059 0.16 4.25 4.030 4.836 5.480 6.447 8.059
35 0.6535 0.32 4.13 3.267 3.921 4.444 5.228 6.535
40 0.5330 0.47 4.02 2.665 3.198 3.624 4.264 5.330
45 0.4372 0.62 3.91 2.186 2.623 2.972 3.497 4.372
50 0.3605 0.77 3.80 1.803 2.163 2.451 2.884 3.606
55 0.2989 0.91 3.70 1.494 1.793 2.032 2.391 2.989
60 0.2490 1.05 3.60 1.245 1.494 1.693 1.992 2.490
65 0.2084 1.18 3.51 1.042 1.251 1.417 1.668 2.084
70 0.1753 1.31 3.42 0.8765 1.052 1.192 1.402 1.753
75 0.1481 1.44 3.33 0.7405 0.8886 1.007 1.185 1.481
80 0.1256 1.57 3.25 0.6282 0.7538 0.8544 1.005 1.256
85 0.1070 1.69 3.16 0.5352 0.6422 0.7278 0.8563 1.070
90 0.09154 1.81 3.09 0.4577 0.5493 0.6225 0.7324 0.9154
95 0.07860 1.93 3.01 0.3930 0.4716 0.5345 0.6288 0.7860
100 0.06773 2.04 2.94 0.3387 0.4064 0.4607 0.5419 0.6773
105 0.05858 2.15 2.87 0.2929 0.3515 0.3983 0.4686 0.5858
110 0.05083 2.26 2.80 0.2542 0.3050 0.3457 0.4067 0.5083
115 0.04426 2.37 2.73 0.2213 0.2656 0.3010 0.3541 0.4426
120 0.03866 2.47 2.67 0.1933 0.2320 0.2629 0.3093 0.3866
125 0.03387 2.57 2.61 0.1694 0.2032 0.2303 0.2710 0.3387
130 0.02977 2.67 2.55 0.1488 0.1786 0.2024 0.2382 0.2977
135 0.02624 2.77 2.49 0.1312 0.1574 0.1784 0.2099 0.2624
140 0.02319 2.86 2.43 0.1160 0.1391 0.1577 0.1855 0.2319
145 0.02055 2.96 2.38 0.1028 0.1233 0.1398 0.1644 0.2055
150 0.01826 3.05 2.33 0.0913 0.1096 0.1242 0.1461 0.1826
1995 Feb 03 7
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 4 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.123 0.153 0.223
−40 25.78 6.81 6.09 309.4 386.8 567.2
−35 19.13 6.16 5.89 229.5 286.9 420.8
−30 14.32 5.53 5.70 171.8 214.8 315.0
−25 10.82 4.93 5.52 129.8 162.3 238.0
−20 8.245 4.35 5.35 98.93 123.7 181.4
−15 6.335 3.80 5.19 76.02 95.03 139.4
−10 4.907 3.26 5.03 58.88 73.60 107.9
−5 3.830 2.74 4.88 45.95 57.44 84.25
0 3.011 2.24 4.73 36.13 45.16 66.24
5 2.384 1.76 4.60 28.60 35.76 52.45
10 1.900 1.30 4.46 22.80 28.50 41.81
15 1.525 0.85 4.34 18.30 22.87 33.55
20 1.231 0.42 4.21 14.77 18.47 27.09
25 1.000 0.00 4.10 12.00 15.00 22.00
30 0.8170 0.41 3.98 9.804 12.26 17.97
35 0.6712 0.80 3.88 8.054 10.07 14.77
40 0.5543 1.19 3.77 6.652 8.315 12.20
45 0.4602 1.57 3.67 5.522 6.903 10.12
50 0.3839 1.94 3.57 4.607 5.759 8.447
55 0.3219 2.30 3.48 3.862 4.828 7.081
60 0.2710 2.65 3.39 3.252 4.067 5.963
65 0.2293 2.99 3.30 2.751 3.439 5.044
70 0.1947 3.33 3.22 2.337 2.921 4.284
75 0.1661 3.66 3.14 1.993 2.492 3.654
80 0.1422 3.98 3.06 1.707 2.134 3.129
85 0.1223 4.29 2.99 1.467 1.834 2.690
90 0.1055 4.60 2.92 1.266 1.583 2.321
95 0.09135 4.90 2.85 1.096 1.370 2.010
100 0.07937 5.19 2.78 0.9524 1.190 1.746
105 0.06919 5.48 2.71 0.8302 1.038 1.522
110 0.06050 5.76 2.65 0.7260 0.9075 1.331
115 0.05307 6.04 2.59 0.6369 0.7961 1.168
120 0.04670 6.31 2.53 0.5604 0.7005 1.027
125 0.04121 6.57 2.47 0.4945 0.6181 0.9065
1995 Feb 03 8
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 5 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.333 0.473
−40 33.81 5.55 6.55 1116 1589
−35 24.50 5.02 6.34 808.6 1151
−30 17.93 4.52 6.15 591.7 842.8
−25 13.25 4.03 5.96 437.1 622.6
−20 9.875 3.56 5.78 325.9 464.1
−15 7.425 3.10 5.61 245.0 349.0
−10 5.630 2.67 5.45 185.8 264.6
−5 4.304 2.24 5.29 142.0 202.3
0 3.315 1.84 5.14 109.4 155.8
5 2.573 1.44 4.99 84.91 120.9
10 2.011 1.07 4.85 66.37 94.53
15 1.583 0.70 4.72 52.24 74.40
20 1.254 0.34 4.59 41.39 58.95
25 1.000 0.00 4.46 33.00 47.00
30 0.8024 0.33 4.34 26.47 37.71
35 0.6474 0.66 4.23 21.37 30.43
40 0.5255 0.98 4.12 17.34 24.70
45 0.4288 1.28 4.01 14.15 20.15
50 0.3518 1.59 3.91 11.61 16.53
55 0.2901 1.88 3.81 9.572 13.63
60 0.2403 2.17 3.71 7.931 11.30
65 0.2001 2.45 3.62 6.603 9.404
70 0.1674 2.72 3.53 5.522 7.865
75 0.1406 2.99 3.44 4.639 6.607
80 0.1186 3.25 3.36 3.913 5.573
85 0.1004 3.51 3.28 3.315 4.721
90 0.08542 3.76 3.20 2.819 4.015
95 0.07292 4.00 3.13 2.406 3.427
100 0.06248 4.24 3.06 2.062 2.936
105 0.05372 4.47 2.98 1.773 2.525
110 0.04635 4.70 2.92 1.530 2.179
115 0.04013 4.93 2.85 1.342 1.886
120 0.03485 5.15 2.79 1.150 1.638
125 0.03037 5.36 2.73 1.002 1.427
130 0.02654 5.57 2.67 0.8757 1.247
135 0.02326 5.78 2.61 0.7675 1.093
140 0.02044 5.98 2.55 0.6746 0.9608
145 0.01802 6.18 2.50 0.5945 0.8468
150 0.01592 6.37 2.44 0.5254 0.7483
1995 Feb 03 9
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 6 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.683 0.104
−40 36.66 5.69 6.70 2493 3666
−35 26.38 5.15 6.49 1794 2638
−30 19.17 4.63 6.29 1303 1917
−25 14.06 4.13 6.10 956.2 1406
−20 10.41 3.65 5.92 708.0 1041
−15 7.779 3.18 5.74 528.9 777.9
−10 5.861 2.73 5.57 398.5 586.1
−5 4.453 2.30 5.41 302.8 445.3
0 3.409 1.88 5.26 231.8 340.9
5 2.631 1.48 5.11 178.9 263.1
10 2.044 1.09 4.97 139.0 204.4
15 1.600 0.72 4.83 108.8 160.0
20 1.261 0.35 4.70 85.74 126.1
25 1.000 0.00 4.57 68.00 100.0
30 0.7981 0.34 4.45 54.27 79.81
35 0.6408 0.67 4.35 43.57 64.08
40 0.5175 1.00 4.22 35.19 51.74
45 0.4202 1.32 4.11 28.57 42.02
50 0.3431 1.63 4.00 23.33 34.31
55 0.2816 1.93 3.90 19.15 28.16
60 0.2322 2.22 3.80 15.79 23.22
65 0.1925 2.51 3.71 13.09 19.25
70 0.1602 2.79 3.62 10.90 16.03
75 0.1340 3.06 3.53 9.114 13.40
80 0.1126 3.33 3.45 7.655 11.26
85 0.09496 3.59 3.36 6.457 9.496
90 0.08042 3.85 3.28 5.469 8.042
95 0.06837 4.10 3.21 4.649 6.837
100 0.05835 4.35 3.13 3.968 5.835
105 0.04998 4.59 3.06 3.399 4.998
110 0.04296 4.82 2.99 2.921 4.296
115 0.03705 5.05 2.92 2.519 3.705
120 0.03206 5.28 2.86 2.180 3.206
125 0.02783 5.50 2.80 1.892 2.783
1995 Feb 03 10
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 7 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.154 0.224
−40 41.02 10.10 6.89 6153 9024
−35 29.29 9.12 6.68 4394 6444
−30 21.12 8.18 6.48 3168 4646
−25 15.37 7.28 6.29 2305 3381
−20 11.28 6.42 6.11 1693 2483
−15 8.358 5.59 5.93 1254 1839
−10 6.242 4.80 5.76 936.4 1373
−5 4.700 4.03 5.60 705.0 1034
0 3.567 3.30 5.44 535.0 784.7
5 2.727 2.59 5.29 409.1 600.0
10 2.101 1.90 5.15 315.1 462.1
15 1.629 1.25 5.01 244.4 358.4
20 1.272 0.61 4.88 190.8 279.9
25 1.000 0.00 4.75 150.0 220.0
30 0.7910 0.59 4.62 118.6 174.0
35 0.6295 1.18 4.51 94.42 138.5
40 0.5039 1.74 4.39 75.58 110.9
45 0.4056 2.30 4.28 60.85 89.24
50 0.3283 2.84 4.17 49.25 72.24
55 0.2672 3.37 4.07 40.08 58.78
60 0.2185 3.89 3.97 32.78 48.08
65 0.1796 4.40 3.87 26.94 39.51
70 0.1483 4.90 3.78 22.25 32.63
75 0.1231 5.39 3.69 18.46 27.07
80 0.1025 5.86 3.60 15.38 22.56
85 0.08582 6.33 3.52 12.87 18.88
90 0.07213 6.79 3.44 10.82 15.87
95 0.06086 7.24 3.36 9.129 13.39
100 0.05155 7.68 3.28 7.732 11.34
105 0.04383 8.11 3.21 6.574 9.642
110 0.03740 8.53 3.14 5.610 8.228
115 0.03203 8.94 3.07 4.804 7.046
120 0.02752 9.35 3.00 4.128 6.054
125 0.02372 9.75 2.94 3.559 5.219
1995 Feb 03 11
Philips Components Product specification
NTC thermistors, naked chips 2322 640 0....
Table 8 Resistance values at intermediate temperatures
Tamb
(°C) RT/R25
∆R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
R25
(kΩ)
2322 640 .....; see Table 1, note 1
0.334 0.474
−40 48.62 6.22 7.13 16044 22850
−35 34.19 5.63 6.91 11282 16068
−30 24.28 5.06 6.71 8013 11413
−25 17.42 4.51 6.52 5747 8185
−20 12.61 3.98 6.33 4161 5926
−15 9.211 3.47 6.15 3040 4329
−10 6.788 2.98 5.98 2240 3190
−5 5.045 2.51 5.82 1665 2371
0 3.781 2.06 5.66 1248 1776
5 2.855 1.62 5.50 942.3 1342
10 2.173 1.19 5.36 717.1 1021
15 1.666 0.78 5.22 549.8 783.0
20 1.286 0.38 5.08 424.5 604.6
25 1.000 0.00 4.95 330.0 470.0
30 0.7825 0.37 4.82 258.2 367.8
35 0.6163 0.74 4.70 203.4 289.6
40 0.4883 1.09 4.59 161.1 229.5
45 0.3892 1.44 4.47 128.4 182.9
50 0.3120 1.77 4.36 103.0 146.7
55 0.2515 2.10 4.26 83.00 118.2
60 0.2038 2.43 4.15 67.26 95.80
65 0.1660 2.74 4.06 54.79 78.03
70 0.1359 3.05 3.96 44.86 63.88
75 0.1118 3.35 3.87 36.90 52.55
80 0.09240 3.64 3.78 30.49 43.43
85 0.07670 3.93 3.69 25.31 36.05
90 0.06395 4.21 3.61 21.10 30.06
95 0.05354 4.48 3.53 17.67 25.16
100 0.04501 4.75 3.45 14.85 21.15
105 0.03798 5.01 3.37 12.53 17.85
110 0.03218 5.27 3.30 10.70 15.12
115 0.02736 5.52 3.23 9.029 12.86
120 0.02335 5.77 3.16 7.704 10.97
125 0.01999 6.01 3.09 6.597 9.396
