2381640632723272 [VISHAY]
RESISTOR, TEMPERATURE DEPENDENT, NTC, 2700 ohm, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT;
| 型号： | 2381640632723272 |
| 厂家： | 
VISHAY |
| 描述： | RESISTOR, TEMPERATURE DEPENDENT, NTC, 2700 ohm, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT 温度传感 电阻器 |
| 文件： | 总20页 (文件大小：564K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
FEATURES
• Accuracy over a wide temperature range
• High stability over a long life
• Excellent price/performance ratio
• Old part number was 2322 640 3/4/6....
• Component in accordance to RoHS 2002/95/EC and
WEEE 2002/96/EC
APPLICATIONS
• Temperature sensing and control
QUICK REFERENCE DATA
PARAMETER
These thermistors have a negative temperature coefficient.
The device consists of a chip with two tinned solid
copper-plated leads. It is grey lacquered and colour coded,
but not insulated.
VALUE
Resistance value at 25 °C
Tolerance on R25-value
Tolerance on B25/85-value
Maximum dissipation
3.3 Ω to 470 kΩ
±2%; ±3%; ±5%; ±10%
±0.5% to ±3%
500 mW
PACKAGING
The thermistors are packed in bulk or tape on reel;
see code numbers and relevant packaging quantities.
Dissipation factor δ
(for information only)
7 mW/K
8.5 mW/K
(for 640..338 to 689)
Response time
1.2 s
15 s
Thermal time constant τ (for
information only)
Operating temperature range:
at zero dissipation; continuously
at zero dissipation;
−40 to +125 °C
≤150 °C
for short periods
at maximum dissipation (500 mW)
Climatic category
0 to 55 °C
40/125/56
Mass
≈0.3 g
ELECTRICAL DATA AND ORDERING INFORMATION
COLOR CODE
(see dimensions
drawing and note 1)
CATALOG NUMBER 2381 640 6....
R25
(Ω)
B25/85-VALUE
R25 ±2%
R25 ±3%
R25 ±5%
R25 ±10%
I
II
III
3.3
4.7
6.8
10
15
22
33
47
68
100
150
220
330
470
680
1000
1500
2880 K ±3%
2880 K ±3%
2880 K ±3%
2990 K ±3%
3041 K ±3%
3136 K ±3%
3390 K ±3%
3390 K ±3%
3390 K ±3%
3560 K ±0.75%
3560 K ±0.75%
3560 K ±0.75%
3560 K ±0.75%
3560 K ±0.5%
3560 K ±0.5%
3528 K ±0.5%
3528 K ±0.5%
4338
4478
4688
4109
4159
4229
4339
4479
4689
4101
4151
4221
4331
4471
4681
4102
4152
6338
6478
6688
6109
6159
6229
6339
6479
6689
6101
6151
6221
6331
6471
6681
6102
6152
3338
3478
3688
3109
3159
3229
3339
3479
3689
3101
3151
3221
3331
3471
3681
3102
3152
2338
2478
2688
2109
2159
2229
2339
2479
2689
2101
2151
2221
2331
2471
2681
2102
2152
orange
yellow
blue
brown
brown
red
orange
yellow
blue
brown
brown
red
orange
yellow
blue
brown
brown
orange
violet
grey
black
green
red
orange
violet
grey
black
green
red
orange
violet
grey
black
green
gold
gold
gold
black
black
black
black
black
black
brown
brown
brown
brown
brown
brown
red
red
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For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
COLOR CODE
(see dimensions
drawing and note 1)
CATALOG NUMBER 2381 640 6....
R25
(Ω)
B25/85-VALUE
R25 ±2%
R25 ±3%
R25 ±5%
R25 ±10%
I
II
III
2000
2200
2700
3300
4700
6800
10000
12000
15000
22000
33000
47000
68000
100000
150000
220000
330000
470000
3528 K ±0.5%
3977 K ±0.75%
3977 K ±0.75%
3977 K ±0.75%
3977 K ±0.75%
3977 K ±0.75%
3977 K ±0.75%
3740 K ±2%
4202
4222
4272
4332
4472
4682
4103
4123
4153
4223
4333
4473
4683
4104
4154
4224
4334
4474
6202
6222
6272
6332
6472
6682
6103
6123
6153
6223
6333
6473
6683
6104
6154
6224
6334
6474
3202
3222
3272
3332
3472
3682
3103
3123
3153
3223
3333
3473
3683
3104
3154
3224
3334
3474
2202
2222
2272
2332
2472
2682
2103
2123
2153
2223
2333
2473
2683
2104
2154
2224
2334
2474
red
red
red
orange
yellow
blue
brown
brown
brown
red
orange
yellow
blue
brown
brown
red
black
red
violet
orange
violet
grey
black
red
green
red
orange
violet
grey
black
green
red
red
red
red
red
red
red
orange
orange
orange
orange
orange
orange
orange
yellow
yellow
yellow
yellow
yellow
3740 K ±2%
3740 K ±2%
4090 K ±1.5%
4090 K ±1.5%
4190 K ±1.5%
4190 K ±1.5%
4370 K ±2.5%
4370 K ±2.5%
4570 K ±1.5%
4570 K ±1.5%
orange
yellow
orange
violet
Notes
DERATING AND TEMPERATURE TOLERANCES
1. Dependent upon R25-tolerance, the band IV is coloured as follows:
a) for R25 ±2%, band IV is coloured red
Power derating curve.
P
(%)
b) for R25 ±3%, band IV is coloured orange
c) for R25 ±5%, band IV is coloured gold
100
d) for R25 ±10%, band IV is coloured silver.
0
40
0
55
85
125
o
T
( C)
amb
DIMENSIONS in millimeters
PHYSICAL DIMENSIONS FOR RELEVANT TYPE
CODE
NUMBER
2381 640
.....
H1
B
T
Bmax
d
H2
L
P
Tmax
Λ Ι
Ι Ι Ι
Ι Ι
max
MIN. MAX.
H
2
Ι
6.338 to
6.221
5.0
3.3
0.6
±0.06
1.0
4.0
6.0
6.0
24
±1.5
2.54 4.0
2.54 3.0
H
1
6.331 to
6.474
0.6
−
2.0
±1.0
24
±1.5
±0.5 ±0.06
L
MARKING
The thermistors are marked with coloured bands; see
dimensions drawing and “Electrical data and ordering
information”.
d
P
MOUNTING
2381 640 6.338 to 6.474.
By soldering in any position.
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
71
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
5
3.0
1
Curves valid for 12 to 22 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
∆T
(K)
1
Curves valid for 2.2 to 10 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
∆T
(K)
2.5
2.0
1.5
4
3
2
1
0
2
3
2
Curve 4: ∆R25/R25 = 1%
(for 2381 640 5.... series only).
3
4
1.0
0.5
0
40
0
40
80
120
160
40
0
40
80
120
160
o
o
T ( C)
T ( C)
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
4.0
4.0
∆T
(K)
1
∆T
(K)
Curves valid for 68 to 100 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
1
Curves valid for 33 to 47 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
3.5
3.0
2.5
3.5
3.0
2.5
2
3
4
2
3
4
Curve 4: ∆R25/R25 = 1%
(for 2381 640 5.... series only).
Curve 4: ∆R25/R25 = 1%
(for 2381 640 5.... series only).
2.0
1.5
1.0
2.0
1.5
1.0
0.5
0
0.5
0
40
0
40
80
120
T ( C)
160
o
40
0
40
80
120
T ( C)
160
o
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
TEMPERATURE DEVIATION AS A FUNCTION
OF THE AMBIENT TEMPERATURE.
6
4.0
∆T
(K)
Curves valid for 150 to 220 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
Curves valid for 330 to 470 kΩ.
Curve 1: ∆R25/R25 = 5%.
Curve 2: ∆R25/R25 = 3%.
Curve 3: ∆R25/R25 = 2%.
∆T
(K)
1
3.5
3.0
2.5
1
5
4
3
2
3
2
3
2.0
1.5
1.0
2
1
0
0.5
0
40
0
40
80
120
160
40
0
40
80
120
160
o
o
T ( C)
T ( C)
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Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
RT VALUE AND TOLERANCE
DETERMINATION OF THE
RESISTANCE/TEMPERATURE DEVIATION
FROM NOMINAL VALUE
These thermistors have a narrow tolerance on the B-value,
the result of which provides a very small tolerance on the
nominal resistance value over a wide temperature range. For
this reason the usual graphs of R = f(T) are replaced by
Resistance Values at Intermediate Temperatures Tables,
together with a formula to calculate the characteristics with a
high precision.
The total resistance deviation is obtained by combining the
‘R25-tolerance’ and the ‘resistance deviation due to
B-tolerance’.
When:
X = R25-tolerance
FORMULAE TO DETERMINE NOMINAL
RESISTANCE VALUES
Y = resistance deviation due to B-tolerance
Z = complete resistance deviation,
The resistance values at intermediate temperatures, or the
operating temperature values, can be calculated using the
following interpolation laws
X
100
Y
100
⎛
⎞
⎠
⎛
⎞
⎠
then: Z = 1 +
× 1 +
– 1 × 100% or Z ≈ X + Y.
---------
---------
⎝
⎝
When:
(extended “Steinhart and Hart”):
2 + D ⁄ T3)
TC = temperature coefficient
R (T) = Rref × e(A + B ⁄ T + C ⁄ T
(1)
∆T = temperature deviation,
–1
3 R
---------
2----R-----
R
⎛
⎝
⎞
⎠
T (R) =
where:
A
1 + B1 ln--------- + C1ln
+ D1ln
(2)
Z
then: ∆T =
-------
Rref
Rref
Rref
TC
The temperature tolerances are plotted in the graphs on the
previous page.
A, B, C, D, A1, B1, C1 and D1 are constant values
depending on the material concerned; see table below.
Example: at 0 °C, assume X = 5%, Y = 0.89% and
TC = 5.08%/K (see Table ), then:
Rref is the resistance value at a reference temperature (in
this event 25 °C).
T is the temperature in K.
⎧
⎨
⎩
⎫
5
100
0.89
100
Z =
1 +
× 1 +
– 1 × 100%
---------
-----------
⎬
⎭
·
Formulae numbered (1) and (2) are interchangeable with an
error of max. 0.005 °C in the range 25 °C to 125 °C and
max. 0.015 °C in the range −40 °C to +25 °C.
= {1.05 × 1.0089 – 1} × 100% = 5.9345% ( ≈ 5.93% )
Z
5.93
∆T =
=
= 1.167 °C ( ≈ 1.17 °C)
------- -----------
TC 5.08
A NTC with a R25-value of 10 kΩ has a value of 32.56 kΩ
between −1.17 and +1.17 °C.
PARAMETERS FOR DETERMINING NOMINAL RESISTANCE VALUES
TOL. B
VALU
E %
B25/85
(K)
B
(K)
C
D
A1
(10−3)
B1
(10−4K−1)
C1
(10−6K−2)
D1
(10−7K−3)
NAME
A
(105K2)
1
2
2880
2990
mat O. with Bn = 2880K
mat P. with Bn = 3990K
3
3
-9.094
-10.2296
2251.74
2887.62
229098
132336
-27448200 3.354016 3.495020 2.09596E-06 4.26062E-07
-25025100 3.354016 3.415560 4.95546E-06 4.36424E-07
516652
616652
3
3041
mat Q. with Bn = 3041K
3
-11.1334
3658.73
-102895
3.354016 3.349290 3.68384E-06 7.05046E-08
4
5
3136
3390
3528(1
3528(2
3560
mat R. with Bn = 3136K
mat S. with Bn = 3390K
3
3
-12.4493
-12.6814
-12.0596 3687.667
-21.0704 11903.95
4702.74
4391.97
-402687
-232807
-7617.13
-2504699
3196830 3.354016 3.243880 2.65801E-06
1509643 3.354016 2.993410 2.13513E-06
-5914730 3.354016 2.909670 1.63214E-06
247033800 3.354016 2.933910 3.49431E-06
-11992560. 3.354016 2.884190 4.11803E-06 1.78679E-07
-7522357 3.354016 2.744030 3.66694E-06 1.37549E-07
-3730535 3.354016 2.569850 2.62013E-06 6.38309E-08
-5414091 3.354016 2.519110 3.51094E-06 1.10518E-07
-3328322 3.354016 2.460380 3.40538E-06 1.03424E-07
-6869149 3.354016 2.367720 3.58514E-06 1.25535E-07
-7183526 3.354016 2.264100 3.27818E-06 1.09763E-07
-2.70156E-0
-8.05672E-0
7.1922E-08
-7.71269E-0
6
mat I. with Bn = 3528K
0.5
7
8
9
mat H. with Bn = 3560K
mat B. with Bn = 3740K
mat A. with Bn = 3977K
mat C. with Bn = 4090K
mat D. with Bn = 4190K
mat E. with Bn = 4370K
mat F. with Bn = 4570K
0.75
2
-13.0723 4190.574 -47158.40
3740
3977
-13.8973 4557.725
-14.6337 4791.842
-15.5322 5229.973
-16.0349 5459.339
-16.8717
-17.6439 6022.726
-98275
-115334
-160451
-191141
-194267
-203157
0.75
1.5
1.5
2.5
1.5
10 4090
11 4190
12 4370
13 4570
5759.15
Notes
1. Temperature < 25 °C.
2. Temperature ≥25 °C.
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
73
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.338
45.00
35.25
27.84
22.16
17.78
14.37
11.69
9.58
7.90
6.56
5.48
4.60
3.89
3.30
2.82
2.42
2.08
1.80
1.57
1.37
1.20
1.05
0.93
0.82
0.73
0.65
0.59
0.53
0.47
0.43
0.39
0.35
0.32
0.29
0.27
0.24
0.22
0.21
0.19
6.478
64.09
50.20
39.64
31.56
25.32
20.46
16.65
13.65
11.26
9.34
7.80
6.55
5.54
4.70
4.01
3.44
2.96
2.57
2.23
1.95
1.71
1.50
1.33
1.17
1.04
0.93
0.83
0.75
0.67
0.61
0.55
0.50
0.45
0.41
0.38
0.35
0.32
0.29
0.27
6.688
92.73
72.63
57.36
45.66
36.63
29.60
24.09
19.74
16.29
13.52
11.29
9.48
8.01
6.80
5.80
4.98
4.29
3.71
3.23
2.82
2.47
2.17
1.92
1.70
1.51
1.35
1.21
1.08
0.97
0.88
0.80
0.72
0.66
0.60
0.55
0.50
0.46
0.42
0.39
−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
130
135
140
145
150
13.6364
10.6806
8.4350
6.7148
5.3866
4.3532
3.5432
2.9035
2.3950
1.9880
1.6602
1.3944
1.1777
1.0000
0.8534
0.7319
0.6307
0.5459
0.4746
0.4143
0.3631
0.3194
0.2820
0.2499
0.2222
0.1982
0.1774
0.1592
0.1433
0.1294
0.1171
0.1063
0.0967
0.0882
0.0806
0.0739
0.0678
0.0624
0.0575
8.08
7.30
6.55
5.84
5.15
4.49
3.85
3.24
2.65
2.08
1.54
1.01
0.49
0.00
0.48
0.94
1.39
1.82
2.24
2.65
3.04
3.43
3.80
4.16
4.51
4.85
5.19
5.51
5.82
6.13
6.43
6.72
7.00
7.28
7.55
7.81
8.07
8.32
8.56
−4.97
−4.80
−4.64
−4.48
−4.33
−4.19
−4.05
−3.92
−3.79
−3.66
−3.55
−3.43
−3.32
−3.22
−3.12
−3.02
−2.93
−2.84
−2.76
−2.68
−2.60
−2.52
−2.45
−2.38
−2.32
−2.25
−2.19
−2.13
−2.07
−2.02
−1.97
−1.92
−1.87
−1.82
−1.77
−1.73
−1.69
−1.65
−1.61
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.109
136.75
107.63
85.32
68.10
54.72
44.25
36.02
29.49
24.30
−40
−35
−30
−25
−20
−15
−10
−5
13.675
10.763
8.5318
6.8097
5.4717
4.4253
3.6017
2.9494
2.4295
8.39
7.58
6.81
6.06
5.35
4.66
4.00
3.37
2.75
−4.86
−4.72
−4.58
−4.44
−4.31
−4.18
−4.06
−3.94
−3.82
0
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Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.109
20.13
16.77
14.04
11.82
10.00
8.50
7.26
6.23
5.36
4.64
4.03
3.51
3.07
2.70
2.38
2.10
1.86
1.66
1.48
1.32
1.19
1.07
0.96
0.87
0.79
0.72
0.65
0.60
0.55
0.50
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
2.0128
1.6767
1.4042
1.1821
1.0000
0.8500
0.7259
0.6226
0.5363
0.4639
0.4029
0.3512
0.3073
0.2698
0.2377
0.2101
0.1864
0.1658
0.1479
0.1323
0.1187
0.1068
0.0964
0.0871
0.0790
0.0717
0.0653
0.0596
0.0545
0.0500
2.16
1.59
1.04
0.51
0.00
0.50
0.98
1.44
1.89
2.33
2.75
3.16
3.56
3.95
4.32
4.69
5.04
5.38
5.72
6.05
6.36
6.67
6.98
7.27
7.56
7.84
8.11
8.37
8.63
8.89
−3.71
−3.60
−3.50
−3.39
−3.30
−3.20
−3.11
−3.03
−2.94
−2.86
−2.78
−2.71
−2.64
−2.57
−2.50
−2.43
−2.37
−2.31
−2.25
−2.20
−2.14
−2.09
−2.04
−1.99
−1.94
−1.90
−1.85
−1.81
−1.77
−1.73
90
95
100
105
110
115
120
125
130
135
140
145
150
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.159
255.63
194.90
150.26
117.06
92.07
73.08
58.49
47.19
38.36
31.40
25.87
21.45
17.89
15.00
12.65
10.72
9.12
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
20
25
30
35
40
45
17.042
12.993
10.017
7.8037
6.1382
4.8719
3.8996
3.1461
2.5571
2.0930
1.7245
1.4298
1.1924
1.0000
0.8431
0.7144
0.6083
0.5203
8.53
7.71
6.92
6.17
5.44
4.74
4.07
3.42
2.80
2.20
1.62
1.06
0.52
0.00
0.50
0.99
1.47
1.92
−5.54
−5.31
−5.10
−4.90
−4.71
−4.53
−4.37
−4.22
−4.07
−3.94
−3.81
−3.69
−3.57
−3.47
−3.36
−3.26
−3.17
−3.08
7.80
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
75
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
R25
(Ω)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.159
6.70
5.78
5.01
4.35
3.80
3.33
2.92
2.58
2.28
2.02
1.79
1.60
1.43
1.28
1.15
1.04
0.94
0.85
0.77
0.70
0.63
50
55
60
65
70
75
80
85
90
0.4470
0.3856
0.3339
0.2903
0.2533
0.2218
0.1948
0.1717
0.1518
0.1346
0.1196
0.1067
0.0954
0.0855
0.0768
0.0691
0.0624
0.0565
0.0512
0.0465
0.0423
2.37
2.80
3.21
3.62
4.01
4.39
4.77
5.13
5.48
5.82
6.15
6.47
6.79
7.09
7.39
7.69
7.97
8.25
8.52
8.78
9.04
−3.00
−2.92
−2.84
−2.76
−2.69
−2.62
−2.56
−2.50
−2.44
−2.38
−2.32
−2.27
−2.22
−2.17
−2.12
−2.07
−2.03
−1.98
−1.94
−1.90
−.86
95
100
105
110
115
120
125
130
135
140
145
150
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.229
374.92
285.85
220.38
171.68
135.04
107.18
85.79
69.21
56.26
46.05
37.94
31.45
26.23
22.00
18.55
15.72
13.38
11.45
9.83
−40
−35
−30
−25
−20
−15
−10
−5
0
17.042
12.993
10.017
7.8037
6.1382
4.8719
3.8996
3.1461
2.5571
2.0930
1.7245
1.4298
1.1924
1.0000
0.8431
0.7144
0.6083
0.5203
0.4470
0.3856
0.3339
0.2903
0.2533
0.2218
0.1948
0.1717
0.1518
8.80
7.95
7.14
6.36
5.61
4.89
4.20
3.53
2.89
2.27
1.67
1.10
0.54
0.00
0.52
1.02
1.51
1.98
2.44
2.88
3.32
3.73
4.14
4.53
4.91
5.29
5.65
−5.54
−5.31
−5.10
−4.90
−4.71
−4.53
−4.37
−4.22
−4.07
−3.94
−3.81
−3.69
−3.57
−3.47
−3.36
−3.26
−3.17
−3.08
−3.00
−2.92
−2.84
−2.76
−2.69
−2.62
−2.56
−2.50
−2.44
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
8.48
7.35
6.39
5.57
4.88
4.29
3.78
3.34
www.vishay.com
76
For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
R25
(Ω)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.229
2.96
2.63
2.35
2.10
1.88
1.69
1.52
1.37
1.24
1.13
1.02
0.93
95
100
105
110
115
120
125
130
135
140
145
150
0.1346
0.1196
0.1067
0.0954
0.0855
0.0768
0.0691
0.0624
0.0565
0.0512
0.0165
0.0423
6.00
6.34
6.68
7.00
7.32
7.62
7.93
8.22
8.50
8.78
9.06
9.32
−2.38
−2.32
−2.27
−2.22
−2.17
−2.12
−2.07
−2.03
−1.98
−1.94
−1.90
−1.86
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.339
707.00
528.48
399.54
305.29
235.60
183.54
144.26
114.33
91.34
73.51
59.59
48.63
39.94
33.00
27.43
22.92
19.26
16.26
13.79
11.76
10.06
8.65
7.47
6.47
5.63
4.91
4.30
3.78
3.33
2.95
2.61
2.32
2.07
1.85
1.66
1.49
6.479
1006.93
752.69
569.05
434.80
335.56
261.41
205.46
162.84
130.09
104.70
84.87
69.26
56.88
47.00
39.06
32.64
27.42
23.16
19.65
16.74
14.33
12.32
10.64
9.22
8.02
7.00
6.13
5.38
4.75
4.20
3.72
3.31
2.95
2.64
2.37
2.13
6.689
1456.84
1089.00
823.30
629.07
485.49
378.21
297.26
235.60
188.21
151.48
122.79
100.20
82.29
68.00
56.51
47.23
39.68
33.50
28.42
24.23
20.74
17.83
15.39
13.33
11.60
10.12
8.86
−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
130
135
21.4241
16.0147
12.1074
9.2511
7.1395
5.5619
4.3715
3.4647
2.7678
2.2276
1.8057
1.4735
1.2102
1.0000
0.8311
0.6946
0.5835
0.4927
0.4180
0.3563
0.3050
0.2622
.02263
0.1961
0.1705
0.1489
0.1304
0.1146
0.1010
0.0893
0.0792
0.0704
0.0628
0.0561
0.0503
0.0452
9.51
8.59
7.72
6.87
6.06
5.29
4.54
3.82
3.12
2.45
1.81
1.18
0.58
0.00
0.56
1.11
1.63
2.14
2.64
3.12
3.58
4.03
4.47
4.90
5.31
5.71
6.11
6.49
6.86
7.22
7.57
7.91
8.24
8.57
8.88
9.19
−5.94
−5.70
−5.49
−5.28
−5.09
−4.90
−4.73
−4.57
−4.42
−4.27
−4.13
−4.00
−3.88
−3.76
−3.64
−3.54
−3.43
−3.34
−3.24
−3.15
−3.07
−2.98
−2.90
−2.83
−2.76
−2.69
−2.62
−2.55
−2.49
−2.43
−2.37
−2.32
−2.26
−2.21
−2.16
−2.11
7.79
6.87
6.07
5.38
4.79
4.27
3.82
3.42
3.07
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
77
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.339
1.34
1.21
1.10
6.479
1.91
1.73
1.56
6.689
2.77
2.50
2.26
140
145
150
0.0407
0.0368
0.0333
9.49
9.79
10.08
−2.07
−2.02
−1.98
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.101
2192.6
1652.2
1255.8
962.5
743.6
579.0
454.2
358.8
285.4
228.6
184.2
149.4
121.9
100.0
82.5
68.4
57.0
47.8
40.2
34.0
28.9
24.6
21.1
18.1
15.6
13.5
11.8
10.3
8.97
7.87
6.93
6.12
5.42
4.81
4.28
3.82
3.42
3.07
2.76
6.151
2388.9
2478.4
1883.7
1443.7
1115.4
868.5
681.2
538.2
428.2
342.9
276.4
224.1
182.8
150.0
123.7
102.6
85.5
71.6
60.3
51.0
43.3
36.9
31.6
27.2
23.4
20.3
17.6
15.4
13.5
11.8
10.4
9.18
8.12
7.21
6.42
5.73
5.13
4.60
4.14
6.221
4823.7
3634.9
2762.8
2117.5
1636.0
1273.7
999.1
789.4
628.0
502.9
405.3
328.7
268.2
220.0
181.5
150.5
125.5
105.1
88.4
74.8
63.5
54.1
46.3
39.8
34.4
29.8
25.9
22.6
19.7
17.3
15.2
13.5
11.9
10.6
9.42
6.331
7236
5452
4144
3176
2454
1911
1499
1184
942.0
754.4
608.0
493.1
402.2
330.0
272.2
225.8
188.2
157.6
132.7
112.1
95.23
81.20
69.52
59.76
51.56
44.65
38.80
33.83
29.59
25.97
22.86
20.19
17.87
15.87
14.13
12.61
11.29
10.12
9.10
6.471
10503
7766
5902
4524
3495
2721
1235
1686
6.681
14910
11235
8540
6545
5057
3937
3088
2440
1941
−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
130
135
140
145
150
21.9261
16.5224
12.5583
9.62492
7.43618
5.78976
4.54158
3.58813
2.85449
2.28599
1.84245
1.49414
1.21887
1.000
0.82494
0.68413
0.57025
0.47765
0.40198
0.33984
0.28856
0.24606
0.21067
0.18108
0.15623
0.13529
0.11757
0.10251
0.08968
0.07871
0.06928
0.06117
0.05416
0.04809
0.04282
0.03822
0.03420
0.03068
0.02758
2.50
2.26
2.03
1.80
1.59
1.39
1.19
1.00
0.82
0.64
0.47
0.31
0.15
0.00
0.15
0.29
0.43
0.56
0.69
0.82
0.94
1.06
1.17
1.29
1.39
1.50
1.60
1.70
1.80
1.89
1.99
2.08
2.16
2.25
2.33
2.41
2.49
2.57
2.65
−5.75
−5.57
−5.40
−5.24
−5.08
−4.93
−4.78
−4.64
−4.51
−4.38
−4.25
−4.13
−4.01
−3.90
−3.80
−3.69
−3.59
−3.50
−3.40
−3.31
−3.23
−3.15
−3.07
−2.99
−2.91
−2.84
−2.77
−2.71
−2.64
−2.58
−2.52
−2.46
−2.41
−2.35
−2.30
−2.25
−2.20
−2.15
−2.10
1342
1074
1554
1253
1016
865.9
702.2
572.9
470.0
387.7
321.5
268.0
224.5
188.9
159.7
135.6
115.6
99.00
85.11
73.43
63.59
55.26
48.18
42.15
36.99
32.56
28.75
25.46
22.60
20.12
17.96
16.07
14.42
12.96
828.8
680.0
561.0
465.2
387.8
324.8
273.3
231.1
196.2
167.3
143.3
123.1
106.2
92.00
79.95
69.71
60.98
53.52
47.11
41.60
36.83
32.70
29.11
25.99
23.25
20.86
18.76
8.41
7.52
6.75
6.07
www.vishay.com
78
For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(Ω)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.102
23342
17336
13018
9877
7569
5855
4569
3596
2854
2282
1838
1491
1217
1000
826.7
687.4
574.6
482.7
407.4
345.2
293.7
250.8
214.9
184.8
159.3
137.7
119.4
103.8
90.46
79.00
69.16
60.66
53.32
46.96
41.44
36.63
32.43
28.77
25.56
6.152
35013
26004
19526
14816
11353
8782
6854
5395
4280
3422
2457
2236
1826
1500
1240
1031
861.9
724.1
611.0
517.8
440.6
376.2
322.4
277.1
238.9
206.6
179.1
155.7
135.7
118.5
103.7
90.99
79.98
70.44
62.15
54.94
48.65
43.16
38.34
6.202
46684
34672
26035
19754
15138
11709
9138
7193
5707
4563
3675
2981
2434
2000
1653
1375
1149
965.0
814.7
690.5
587.5
501.7
429.8
369.5
318.6
275.5
238.9
207.6
180.9
158.0
138.3
121.3
106.6
93.9
−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
130
135
140
145
150
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
0.4073
0.3452
0.2937
0.2508
0.2149
0.1847
0.1593
0.1377
0.11942
0.10380
0.09045
0.07900
0.06915
0.06066
0.05332
0.04696
0.04143
0.03662
0.03243
0.02877
0.02556
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
0.46
0.54
0.62
0.70
0.78
0.85
0.92
0.99
1.06
1.13
1.19
1.25
1.31
1.37
1.43
1.49
1.54
1.60
1.65
1.70
1.75
−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
−3.32
−3.23
−3.14
−3.05
−2.97
−2.89
−2.81
−2.73
−2.66
−2.59
−2.53
−2.46
−2.40
−2.34
−2.29
−2.23
−2.18
−2.13
−2.08
−2.03
−1.98
82.9
73.3
64.9
57.5
51.1
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.222
73.06
52.78
38.55
28.44
21.20
15.95
12.11
6.272
89.67
64.77
47.31
34.91
26.02
19.58
14.86
6.332
109.6
79.17
57.82
42.67
31.80
23.93
18.16
6.472
156.1
112.8
82.35
60.77
45.30
34.08
25.87
6.682
225.8
163.1
119.1
87.92
65.53
49.30
37.43
6.103
332.1
240.0
175.2
129.3
96.36
72.50
55.05
−40
−35
−30
−25
−20
−15
−10
33.21
23.99
17.52
12.93
9.636
7.250
5.505
2.66
2.41
2.17
1.94
1.71
1.50
1.29
6.57
6.36
6.15
5.95
5.76
5.58
5.40
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
79
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.222
9.275
7.162
5.575
4.372
3.454
2.747
2.200
1.773
6.272
11.38
8.790
6.842
5.366
4.239
3.372
2.700
2.176
1.764
1.439
1.180
0.973
0.807
0.672
0.562
0.473
0.399
0.339
0.289
0.247
0.212
0.182
0.158
0.137
0.1195
0.1044
0.0915
0.0804
0.0709
0.0626
0.0555
0.0493
6.332
13.91
10.74
8.362
6.558
5.181
4.121
3.300
2.660
2.156
1.759
1.443
1.190
0.9863
0.8217
0.6879
0.5785
0.4887
0.4146
0.3532
0.3021
0.2594
0.2235
0.1933
0.1677
0.1461
0.1276
0.1118
0.0982
0.0866
0.0765
0.0678
0.0603
6.472
19.81
15.30
11.91
9.340
7.378
5.869
4.700
3.788
3.072
2.505
2.055
1.694
1.405
1.170
0.9797
0.8239
0.6960
0.5905
0.5031
0.4303
0.3694
0.3183
0.2753
0.2389
0.2080
0.1817
0.1592
0.1399
0.1233
0.1090
0.0966
0.0858
6.682
28.67
22.14
17.23
13.51
10.67
8.492
6.800
5.480
4.444
3.624
2.972
2.451
2.032
1.693
1.417
1.192
6.103
42.16
32.56
25.34
19.87
15.70
12.49
10.00
8.059
6.535
5.330
4.372
3.606
2.989
2.490
2.084
1.753
1.481
1.256
1.070
0.9154
0.7860
0.6773
0.5858
0.5083
0.4426
0.3866
0.3387
0.2977
0.2624
0.2319
0.2055
0.1826
−5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
4.216
3.255
2.534
1.987
1.570
1.08
0.89
0.70
0.52
0.34
0.17
0.00
0.16
0.32
0.47
0.62
0.77
0.91
1.05
1.18
1.31
1.44
1.57
1.69
1.81
1.93
2.04
2.15
2.26
2.37
2.47
2.57
2.67
2.77
2.86
2.96
3.05
5.24
5.08
4.92
4.78
4.64
4.50
4.37
4.25
4.13
4.02
3.91
3.80
3.70
3.60
3.51
3.42
3.33
3.25
3.16
3.09
3.01
2.94
2.87
2.80
2.73
2.67
2.61
2.55
2.49
2.43
2.38
2.33
1.249
1.000
0.8059
0.6535
0.5330
0.4372
0.3605
0.2989
0.2490
0.2084
0.1753
0.1481
0.1256
0.1070
0.09154
0.07860
0.06773
0.05858
0.05083
0.04426
0.03866
0.03387
0.02977
0.02624
0.02319
0.02055
0.01826
1.438
1.173
0.9618
0.7932
0.6575
0.5478
0.4586
0.3857
0.3258
0.2764
0.2355
0.2014
0.1729
0.1490
0.1289
0.1118
0.0974
0.0851
0.0745
0.0655
0.0577
0.0510
0.0452
0.0402
1.007
80
85
90
95
0.8544
0.7278
0.6225
0.5345
0.4607
0.3983
0.3457
0.3010
0.2629
0.2303
0.2024
0.1784
0.1577
0.1398
0.1242
100
105
110
115
120
125
130
135
140
145
150
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.123
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
6.153
386.8
286.9
214.8
162.3
123.7
95.03
73.60
57.44
45.16
35.76
28.50
22.87
18.47
15.00
12.26
6.223
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
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
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
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
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
20
25
30
www.vishay.com
80
For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.153
6.123
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
6.223
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
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
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
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
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
10.07
8.315
6.903
5.759
4.828
4.067
3.439
2.921
2.492
2.134
1.834
1.583
1.370
1.190
1.038
0.9075
0.7961
0.7005
0.6181
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.333
6.473
1589
1151
842.8
622.6
464.1
349.0
264.6
202.3
155.8
120.9
94.53
74.40
58.95
47.00
37.71
30.43
24.70
20.15
16.53
13.63
11.30
9.404
7.865
6.607
5.573
4.721
4.015
3.427
2.936
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
20
25
30
35
40
45
50
55
33.81
24.50
17.93
13.25
9.875
7.425
5.630
4.304
3.315
2.573
2.011
1.583
1.254
5.55
5.02
4.52
4.03
3.56
3.10
2.67
2.24
1.84
1.44
1.07
0.70
0.34
0.00
0.33
0.66
0.98
1.28
1.59
1.88
2.17
2.45
2.72
2.99
3.25
3.51
3.76
4.00
4.24
6.55
6.34
6.15
5.96
5.78
5.61
5.45
5.29
5.14
4.99
4.85
4.72
4.59
4.46
4.34
4.23
4.12
4.01
3.91
3.81
3.71
3.62
3.53
3.44
3.36
3.28
3.20
3.13
3.06
1116
808.6
591.7
437.1
325.9
245.0
185.8
142.0
109.4
84.91
66.37
52.24
41.39
33.00
26.47
21.37
17.34
14.15
11.61
9.572
7.931
6.603
5.522
4.639
3.913
3.315
2.819
2.406
2.062
1.000
0.8024
0.6474
0.5255
0.4288
0.3518
0.2901
0.2403
0.2001
0.1674
0.1406
0.1186
0.1004
0.08542
0.07292
0.06248
60
65
70
75
80
85
90
95
100
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
81
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.333
1.773
1.530
1.342
6.473
2.525
2.179
1.886
1.638
1.427
1.247
1.093
0.9608
0.8468
0.7483
105
110
115
120
125
130
135
140
145
150
0.05372
0.04635
0.04013
0.03485
0.03037
0.02654
0.02326
0.02044
0.01802
0.01592
4.47
4.70
4.93
5.15
5.36
5.57
5.78
5.98
6.18
6.37
2.98
2.92
2.85
2.79
2.73
2.67
2.61
2.55
2.50
2.44
1.150
1.002
0.8757
0.7675
0.6746
0.5945
0.5254
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.683
(%)
6.104
3666
2638
1917
1406
1041
777.9
586.1
445.3
340.9
263.1
204.4
160.0
126.1
100.0
79.81
64.08
51.74
42.02
34.31
28.16
23.22
19.25
16.03
13.40
11.26
9.496
8.042
6.837
5.835
4.998
4.296
3.705
3.206
2.783
−40
−35
−30
−25
−20
−15
−10
−5
36.66
26.38
5.69
5.15
4.63
4.13
3.65
3.18
2.73
2.30
1.88
1.48
1.09
0.72
0.35
0.00
0.34
0.67
1.00
1.32
1.63
1.93
2.22
2.51
2.79
3.06
3.33
3.59
3.85
4.10
4.35
4.59
4.82
5.05
5.28
5.50
6.70
6.49
6.29
6.10
5.92
5.74
5.57
5.41
5.26
5.11
4.97
4.83
4.70
4.57
4.45
4.35
4.22
4.11
4.00
3.90
3.80
3.71
3.62
3.53
3.45
3.36
3.28
3.21
3.13
3.06
2.99
2.92
2.86
2.80
2493
1794
1303
956.2
708.0
528.9
398.5
302.8
231.8
178.9
139.0
108.8
85.74
68.00
54.27
43.57
35.19
28.57
23.33
19.15
15.79
13.09
10.90
9.114
7.655
6.457
5.469
4.649
3.968
3.399
2.921
2.519
2.180
1.892
19.17
14.06
10.41
7.779
5.861
4.453
0
3.409
5
2.631
10
2.044
15
1.600
20
1.261
25
1.000
30
0.7981
0.6408
0.5175
0.4202
0.3431
0.2816
0.2322
0.1925
0.1602
0.1340
0.1126
0.09496
0.08042
0.06837
0.05835
0.04998
0.04296
0.03705
0.03206
0.02783
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
www.vishay.com
82
For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.154
6153
4394
3168
2305
1693
1254
936.4
705.0
535.0
409.1
315.1
244.4
190.8
150.0
118.6
94.42
75.58
60.85
49.25
40.08
32.78
26.94
22.25
18.46
15.38
12.87
10.82
9.129
7.732
6.574
5.610
4.804
4.128
3.559
6.224
9024
6444
4646
3381
2483
1839
1373
1034
784.7
600.0
462.1
358.4
279.9
220.0
174.0
138.5
110.9
89.24
72.24
58.78
48.08
39.51
32.63
27.07
22.56
18.88
15.87
13.39
11.34
9.642
8.228
7.046
6.054
5.219
−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
41.02
29.29
21.12
15.37
11.28
8.358
6.242
4.700
3.567
2.727
2.101
1.629
1.272
10.10
9.12
8.18
7.28
6.42
5.59
4.80
4.03
3.30
2.59
1.90
1.25
0.61
0.00
0.59
1.18
1.74
2.30
2.84
3.37
3.89
4.40
4.90
5.39
5.86
6.33
6.79
7.24
7.68
8.11
8.53
8.94
9.35
9.75
6.89
6.68
6.48
6.29
6.11
5.93
5.76
5.60
5.44
5.29
5.15
5.01
4.88
4.75
4.62
4.51
4.39
4.28
4.17
4.07
3.97
3.87
3.78
3.69
3.60
3.52
3.44
3.36
3.28
3.21
3.14
3.07
3.00
2.94
1.000
0.7910
0.6295
0.5039
0.4056
0.3283
0.2672
0.2185
0.1796
0.1483
0.1231
0.1025
0.08582
0.07213
0.06086
0.05155
0.04383
0.03740
0.03203
0.02752
0.02372
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.334
6.474
22850
16068
11413
8185
5926
4329
3190
2371
1776
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
15
48.62
34.19
24.28
17.42
12.61
9.211
6.788
5.045
3.781
2.855
2.173
1.666
1.286
6.22
5.63
5.06
4.51
3.98
3.47
2.98
2.51
2.06
1.62
1.19
0.78
0.38
7.13
6.91
6.71
6.52
6.33
6.15
5.98
5.82
5.66
5.50
5.36
5.22
5.08
16044
11282
8013
5747
4161
3040
2240
1665
1248
942.3
717.1
549.8
424.5
1342
1021
783.0
604.6
20
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
83
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
Toper
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
(%)
6.334
6.474
470.0
367.8
289.6
229.5
182.9
146.7
118.2
95.80
78.03
63.88
52.55
43.43
36.05
30.06
25.16
21.15
17.85
15.12
12.86
10.97
9.396
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
1.000
0.7825
0.6163
0.4883
0.3892
0.3120
0.2515
0.2038
0.1660
0.1359
0.1118
0.09240
0.07670
0.06395
0.05354
0.04501
0.03798
0.03218
0.02736
0.02335
0.01999
0.00
0.37
0.74
1.09
1.44
1.77
2.10
2.43
2.74
3.05
3.35
3.64
3.93
4.21
4.48
4.75
5.01
5.27
5.52
5.77
6.01
4.95
4.82
4.70
4.59
4.47
4.36
4.26
4.15
4.06
3.96
3.87
3.78
3.69
3.61
3.53
3.45
3.37
3.30
3.23
3.16
3.09
330.0
258.2
203.4
161.1
128.4
103.0
83.00
67.26
54.79
44.86
36.90
30.49
25.31
21.10
17.67
14.85
12.53
10.70
9.029
7.704
6.597
100
105
110
115
120
125
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R25 AT 68 KΩ AND 100 KΩ
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Tamb
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.683
6.104
3666
2638
1917
1406
1041
777.9
586.1
445.3
340.9
263.1
204.4
160.0
126.1
100.0
79.81
64.08
51.74
42.02
34.31
28.16
23.22
19.25
16.03
13.40
11.26
9.496
−40
−35
−30
−25
−20
−15
−10
−5
36.66
26.38
19.17
14.06
10.41
7.779
5.861
4.453
3.409
2.631
2.044
1.600
1.261
5.69
5.15
4.63
4.13
3.65
3.18
2.73
2.30
1.88
1.48
1.09
0.72
0.35
0.00
0.34
0.67
1.00
1.32
1.63
1.93
2.22
2.51
2.79
3.06
3.33
3.59
6.70
6.49
6.29
6.10
5.92
5.74
5.57
5.41
5.26
5.11
4.97
4.83
4.70
4.57
4.45
4.35
4.22
4.11
4.00
3.90
3.80
3.71
3.62
3.53
3.45
3.36
2493
1794
1303
956.2
708.0
528.9
398.5
302.8
231.8
178.9
139.0
108.8
85.74
68.00
54.27
43.57
35.19
28.57
23.33
19.15
15.79
13.09
10.90
9.114
7.655
6.457
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
1.000
0.7981
0.6408
0.5175
0.4202
0.3431
0.2816
0.2322
0.1925
0.1602
0.1340
0.1126
0.09496
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Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Tamb
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
6.683
6.104
8.042
6.837
5.835
4.998
4.296
3.705
3.206
2.783
90
95
0.08042
0.06837
0.05835
0.04998
0.04296
0.03705
0.03206
0.02783
3.85
4.10
4.35
4.59
4.82
5.05
5.28
5.50
3.28
3.21
3.13
3.06
2.99
2.92
2.86
2.80
5.469
4.649
3.968
3.399
2.921
2.519
2.180
1.892
100
105
110
115
120
125
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R25 AT 470 KΩ
R25
(kΩ)
∆R DUE TO
B-TOLERANCE
(%)
Tamb
(°C)
TC
(%/K)
RT/R25
2381 640 .....; see note 1 at end of tables
5.474
22850
16068
11413
8185
5926
4329
3190
2371
1776
−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
48.62
34.19
24.28
17.42
12.61
9.211
6.788
5.045
3.781
2.855
2.173
1.666
1.286
6.22
5.63
5.06
4.51
3.98
3.47
2.98
2.51
2.06
1.62
1.19
0.78
0.38
0.00
0.37
0.74
1.09
1.44
1.77
2.10
2.43
2.74
3.05
3.35
3.64
3.93
4.21
4.48
4.75
5.01
5.27
5.52
5.77
6.01
7.13
6.91
6.71
6.52
6.33
6.15
5.98
5.82
5.66
5.50
5.36
5.22
5.08
4.95
4.82
4.70
4.59
4.47
4.36
4.26
4.15
4.06
3.96
3.87
3.78
3.69
3.61
3.53
3.45
3.37
3.30
3.23
3.16
3.09
1342
1021
783.0
604.6
470.0
367.8
289.6
229.5
182.9
146.7
118.2
95.80
78.03
63.88
52.55
43.43
36.05
30.06
25.16
21.15
17.85
15.12
12.86
10.97
9.396
1.000
0.7825
0.6163
0.4883
0.3892
0.3120
0.2515
0.2038
0.1660
0.1359
0.1118
0.09240
0.07670
0.06395
0.05354
0.04501
0.03798
0.03218
0.02736
0.02335
0.01999
Note to Resistance Values At Intermediate Temperature Tables
1. Replace dot in last 5 digits of catalog number by a number according to the following details and depending on tolerance on
required R25-value: 4 for a tolerance of ±2%; 6 for a tolerance of ±3%; 3 for a tolerance of ±5%; 2 for a tolerance of ±10%.
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
85
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
PACKAGING
TAPE SPECIFICATIONS
Thermistors on tape.
P
T
D
∆ p
∆ p
∆ h
∆ h
H
1
O d
H
W
2
L
W
1
W
W
0
A
D
P
F
0
t
P
direction of unreeling
0
1
detail A
1E pitch
2322 640 4....
DIMENSIONS OF TAPE IN ACCORDANCE WITH “IEC 60286-2”
DIMENSIONS
(mm)
SYMBOL
PARAMETER
VALUE
TOLERANCE
D
body diameter(2)
3.3
≤3
+0.5
−
T
maximum total thickness
lead diameter
d
0.6
±0.06
±1
P
pitch between thermistors
feed-hole pitch (cumulative pitch error ±0.2 mm/20 products)
feed-hole centre to lead centre
component alignment
12.7
12.7
5.08
0
P0
P1
∆p
F
±0.3
±0.7
±1.3
±0.3
±2
lead-to-lead distance
2.54
0
∆h
W
W0
W1
W2
H
component alignment
tape width
18.0
≥12.5
9.0
+1/-0.5
−
hold-down tape width
feed-hole position
±0.5
−
hold-down tape position
component to tape centre
component height
≤3
22(1)
≤32
≤11
4.0
±1
H1
L
−
length of snipped lead
−
D0
t
feed-hole diameter
±0.2
±0.2
1%
total tape thickness with cardboard tape 0.5 ±0.1 mm
inspection level: S3 mechanical
0.65
−
Note
1. Taped products with H= 45±1, are available on request.
2. D ≤5 max for 6404.338 to 221.
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For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
2381 640 3/4/6....
NTC Thermistors, Accuracy Line
Vishay BCcomponents
Thermistors on tape.
P
T
∆ p
∆ p
∆ h
∆ h
D
10
max
O d
H
H
W
0
2
L
W
1
W
W
0
A
D
F
0
P
P
1
0
direction of unreeling
t
2E pitch
detail A
2322 640 3....
DIMENSIONS OF TAPE IN ACCORDANCE WITH “IEC 60286-2”
DIMENSIONS
(mm)
SYMBOL
PARAMETER
VALUE
TOLERANCE
D
body diameter(1)
maximum total thickness(2)
3.3
≤3.2
0.6
12.7
12.7
3.85
0
+0.5
−
T
d
lead diameter
±0.06
±1
P
pitch between thermistors
feed-hole pitch (cumulative pitch error ±0.2 mm/20 products)
feed-hole centre to lead centre
component alignment
P0
P1
∆p
F
±0.3
±0.7
±1.3
±0.3
±2
lead-to-lead distance
5.08
0
∆h
W
W0
W1
W2
H
component alignment
tape width
18.0
≥12.5
9.0
≤3
+1/-0.5
−
hold-down tape width
feed-hole position
+0.75/-0.5
−
hold-down tape position
component to tape centre
lead wire clinch height
20
+2
H0
L
16
±0.5
−
length of snipped lead
≤11
4.0
0.7
−
D0
t
feed-hole diameter
±0.3
±0.2
1%
total tape thickness with cardboard tape 0.5 ±0.1 mm
inspection level: S3 mechanical
Note
1. D ≤5 max for 640 3. 338 to 640 4. 221.
2. T ≤4 max for 640 3. 338 to 640 4. 221.
Document Number: 29049
Revision: 12-Apr-05
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
87
2381 640 3/4/6....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
REEL SPECIFICATIONS
CODE NUMBERS AND RELEVANT PACKAGING QUANTITIES
Dimensions of the reel.
TAPE AND REEL(1)
1e pitch
TAPE AND REEL(1)
2e pitch
BULK
PARAMETER
2381 640 6....
2381 640 4....
2381 640 3....
Quantity
500
1500 per reel, 2 reels per
box
1500 per reel, 2 reels per
box
3
Note
1. The maximum number of empty places per reel shall not exceed 0.1% of the total number of
components per reel. With no consecutive positions empty.
18
CHARACTERISTICS OF TAPED PRODUCTS
Minimum pull-out force of the component: 5 N.
Minimum peel-off force of adhesive tape: 6N.
Minimum tearing force tape: 15 N.
356
max.
+1
−0
30
77
85.6 92
Minimum pull-off force of tape-reel: 5 N.
22.5
STORAGE CONDITIONS
Storage temperature range: −25 to +40 °C.
Maximum relative humidity: 80%.
42
1
56 max
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with “IEC publication 60068-2; Environmental testing”, except where indicated.
STABILITY TESTS
IEC
60068-2
TEST METHOD
CECC 32 100
CLAUSE
TEST
PROCEDURE
REQUIREMENTS
D3; 4.20.1
endurance
endurance
endurance
25 °C; 1000 hours
−40 °C; 1000 hours
500 mW; 55 °C; 1000 hours
125 °C; 1000 hours
∆R/R < 1%
∆R/R < 1%
∆R/R < 3% (note 1)
∆R/R < 3%
1
539
2
dry heat,
D1; 4.19
C2; 4.14
3
14
damp heat
rapid change of temperature
56 days at 40 °C; 90 to 95% RH
−40 °C to +125 °C; 50 cycles
∆R/R < 3%
∆R/R < 2%
Other applicable tests
21
robustness of leads:
tensile strength
bending
∆R/R ≤ 1%
loading force 10 N
loading force 5 N
58
soldering:
∆R/R ≤ 1% (note 2)
solderability
resistance to heat
impact
shock
resistance to solvent
vibration
240 °C max.; duration 4 s max.
265 °C max.; duration 5 s max.
free fall; 1 m
27
29
45
6
∆R/R ≤ 1%
∆R/R ≤ 1%
no traces of lacquer on
no visible damage
non-flammable
490 m/s; half sinewave
ambient temp for 5 min;
1.5 mm peak to peak: 10 to 58 Hz
1980, needle flame test
2
inflammability
Notes
1. For R25 ≥ 100 kΩ the drift requirement is ∆R/R < 5%.
2. For R25 from 2.2 kΩ to 10 kΩ, requirement is ±2% max.
www.vishay.com
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For technical questions contact: nlr.europe@vishay.com
Document Number: 29049
Revision: 12-Apr-05
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
www.vishay.com
1
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