2381 640 5....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
FEATURES
•
Accurate over a wide temperature range (tolerance on
B-value between 2.5% and 0.5%)
•
Good stability over a long life
•
Excellent price/performance ratio
•
Flexible leads
•
Low heat conductivity through 0.4 mm diameter Ni-leads
•
Old part number was 2322 640 5....
•
Component in accordance to RoHS 2002/95/EC and
WEEE 2002/96/EC
QUICK REFERENCE DATA
PARAMETER
Resistance value at 25
°C
Tolerance on R
25
-value
Tolerance on B
25/85
-value
Maximum dissipation
Dissipation factor
δ
Response time; note 1
Thermal time constant
τ
Operating temperature range at:
zero dissipation (continuously)
zero dissipation (for short
maximum dissipation (100 mW)
Climatic category
Mass
Notes
1. Response time in silicone oil MS200/50. This is the time needed
for the sensor to reach 63.2% of the total temperature difference
when subjected to a temperature change from 25
°C
in air to
85
°C
in oil.
2. Valid for all types with the exception of 2381 640 5.474.
VALUE
2 to 470 kΩ
±5%; ±3%; ±2%; ±1%
±2.5
to 0.5%
100 mW
2.2 mW/K
≈1.7
s
13 s
−40
to +125
°C
≤150 °C
0 to +55
°C
40/125/56
≈0.11
g
APPLICATIONS
•
Temperature sensing and control.
These thermistors have a negative temperature coefficient.
The device consists of a chip with two tinned nickel leads and
is colour coded.
PACKAGING
The thermistors are packed in cardboard boxes; the smallest
packing quantity is 500 units.
MARKING
The thermistors are marked with coloured bands; see
Dimentions and “Electrical data and ordering information”
MOUNTING
By soldering in any position.
ELECTRICAL DATA AND ORDERING INFORMATION
R
25
(kΩ)
2
2.7
4.7
5
10
12
22
47
68
100
470
Notes
1. Extended range available on request.
2. Thermistors have a 12-digit catalog number starting with 2322 640 5; the next digit indicates the tolerance and the last 3 digits indicate the
resistance value.
www.vishay.com
64
For technical questions contact: nlr.europe@vishay.com
Document Number: 29048
Revision: 07-Apr-05
B
25/85
-VALUE
3528 K
±0.5%
3977 K
±0.75%
3977 K
±0.75%
3977 K
±0.75%
3977 K
±0.75%
3740 K
±2%
3740 K
±2%
4090 K
±1.5%
4190 K
±1.5%
4190 K
±1.5%
4570 K
±1.5%
CATALOG NUMBER 2381 640 5....
R
25
±5%
3202
3272
3472
3502
3103
3123
3223
3473
3683
3104
3474
R
25
±3%
6202
6272
6472
6502
6103
6123
6223
6473
6683
6104
6474
R
25
±2%
4202
4272
4472
4502
4103
4123
4223
4473
4683
4104
4474
R
25
±1%
5202
5272
5472
5502
5103
−
−
−
−
5104
−
CODING
(see dimensions)
I
orange
red
green
black
blue
yellow
white
black
grey
brown
violet
II
orange
red
green
white
blue
yellow
white
black
grey
brown
violet
2381 640 5....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
DIMENSIONS
in millimeters
3.4 max.
3
max.
6.0 max
DERATING AND LONG TERM STABILITY
P
(%)
100
I
II
I
II
2
±
1.0
2.54
40
±1.5
0
40
0
55
85
Tamb (
o
C)
125
±
0.04
Power derating curve.
LONG TERM STABILITY OF R
25
AS A
FUNCTION OF TEST DURATION AT
MAXIMUM TEMPERATURE (150
°C).
0.4
∆R
25
R25
(%)
0.2
2
1
Curves valid for 2.2 to 10 kΩ.
Curve 1: maximum deviation.
Curve 2: average deviation.
Curve 3: minimum deviation.
LONG TERM STABILITY OF T AS A
FUNCTION OF TEST DURATION AT
MAXIMUM TEMPERATURE (150
°C).
0.05
∆T
(K)
0
2
Curves valid for 2.2 to 10 kΩ.
Curve 1: minimum deviation.
Curve 2: average deviation.
Curve 3: maximum deviation.
1
0
3
0.05
3
0.2
10
2
10
3
test duration (h)
10
4
0.1
2
10
10
3
test duration (h)
10
4
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R
25
AT 2 KΩ
T
oper
(°C)
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
20
25
30
35
40
45
R
T
/R
25
23.3402
17.3347
13.0166
9.8764
7.5682
5.8541
4.5688
3.5961
2.8533
2.2815
1.8376
1.4904
1.2169
1.0000
0.8266
0.6873
0.5746
0.4827
∆R
DUE TO
B-TOLERANCE
(%)
1.65
1.49
1.34
1.19
1.05
0.92
0.79
0.66
0.54
0.43
0.31
0.21
0.10
0.00
0.10
0.19
0.28
0.37
TC
(%/K)
−6.06
−5.84
−5.62
−5.42
−5.23
−5.05
−4.87
−4.71
−4.55
−4.40
−4.26
−4.12
−3.99
−3.87
−3.75
−3.63
−3.53
−3.42
R
25
2381 640 .....;
see note 1
5.202
46684
34672
26035
19754
15138
11709
9138
7193
5707
4563
3675
2981
2434
2000
1653
1375
1149
965.0
Document Number: 29048
Revision: 07-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
65
2381 640 5....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
T
oper
(°C)
115
120
125
130
135
140
145
150
R
T
/R
25
0.04426
0.03866
0.03387
0.02977
0.02624
0.02319
0.02055
0.01826
∆R
DUE TO
B-TOLERANCE
(%)
2.37
2.47
2.57
2.67
2.77
2.86
2.96
3.05
TC
(%/K)
2.73
2.67
2.61
2.55
2.49
2.43
2.38
2.33
5.272
0.1195
0.1044
0.0915
0.0804
0.0709
0.0626
0.0555
0.0493
R
25
2381 640 .....;
see note 1
5.472
5.502
0.2080
0.2213
0.1817
0.1933
0.1592
0.1694
0.1399
0.1488
0.1233
0.1312
0.1090
0.1160
0.0966
0.1028
0.0858
0.0913
5.103
0.4426
0.3866
0.3387
0.2977
0.2624
0.2319
0.2055
0.1826
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R
25
AT 12 KΩ AND 22 KΩ
T
amb
(°C)
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
R
T
/R
25
25.78
19.13
14.32
10.82
8.245
6.335
4.907
3.830
3.011
2.384
1.900
1.525
1.231
1.000
0.8170
0.6712
0.5543
0.4602
0.3839
0.3219
0.2710
0.2293
0.1947
0.1661
0.1422
0.1223
0.1055
0.09135
0.07937
0.06919
0.06050
0.05307
0.04670
0.04121
∆R
DUE TO
B-TOLERANCE
(%)
6.81
6.16
5.53
4.93
4.35
3.80
3.26
2.74
2.24
1.76
1.30
0.85
0.42
0.00
0.41
0.80
1.19
1.57
1.94
2.30
2.65
2.99
3.33
3.66
3.98
4.29
4.60
4.90
5.19
5.48
5.76
6.04
6.31
6.57
TC
(%/K)
6.09
5.89
5.70
5.52
5.35
5.19
5.03
4.88
4.73
4.60
4.46
4.34
4.21
4.10
3.98
3.88
3.77
3.67
3.57
3.48
3.39
3.30
3.22
3.14
3.06
2.99
2.92
2.85
2.78
2.71
2.65
2.59
2.53
2.47
R
25
2381 640 .....;
see note 1
5.123
309.4
229.5
171.8
129.8
98.93
76.02
58.88
45.95
36.13
28.60
22.80
18.30
14.77
12.00
9.804
8.054
6.652
5.522
4.607
3.862
3.252
2.751
2.337
1.993
1.707
1.467
1.266
1.096
0.9524
0.8302
0.7260
0.6369
0.5604
0.4945
5.223
567.2
420.8
315.0
238.0
181.4
139.4
107.9
84.25
66.24
52.45
41.81
33.55
27.09
22.00
17.97
14.77
12.20
10.12
8.447
7.081
5.963
5.044
4.284
3.654
3.129
2.690
2.321
2.010
1.746
1.522
1.331
1.168
1.027
0.9065
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R
25
AT 47 KΩ
T
amb
(°C)
−40
−35
−30
−25
R
T
/R
25
33.81
24.50
17.93
13.25
∆R
DUE TO
B-TOLERANCE
(%)
5.55
5.02
4.52
4.03
TC
(%/K)
6.55
6.34
6.15
5.96
R
25
2381 640 .....;
see note 1
5.473
1589
1151
842.8
622.6
www.vishay.com
67
Document Number: 29048
Revision: 07-Apr-05
For technical questions contact: nlr.europe@vishay.com
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