NTCLE100CL272HB0 Vishay, NTCLE100CL272HB0 Datasheet - Page 4

• Manufacturer Part Number: NTCLE100CL272HB0
• Description: THERMISTOR 2.7K OHM NTC LEADED
• Manufacturer: Vishay
• Series: 2322r

Specifications of NTCLE100CL272HB0

• Resistance In Ohms @ 25°c: 2.7K
• Resistance Tolerance: ±3%
• B Value Tolerance: ±0.75%
• B25/85: 3977K
• Operating Temperature: -40°C ~ 150°C
• Power - Max: 500mW
• Mounting Type: PCB, Through Hole
• Package / Case: Molded Bead
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• B0/50: -
• B25/50: -
• B25/75: -
• B25/100: -
• Lead Length: -
• Other names: 2322 640 66272; 232264066272; BC1480

Document Number: 29049
Revision: 10-Oct-03
R
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.
FORMULAE TO DETERMINE NOMINAL
RESISTANCE VALUES
The resistance values at intermediate temperatures, or the
operating temperature values, can be calculated using the
following interpolation laws
(extended “Steinhart and Hart”):
where:
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
Notes
1. Temperature < 25 °C.
2. Temperature ≥25 °C.
T (R) = A
PARAMETERS FOR DETERMINING NOMINAL RESISTANCE VALUES
T
A, B, C, D, A
depending on the material concerned; see table below.
R
this event 25 °C).
T is the temperature in K.
3977
4090
4190
4370
4570
B
(K)
2880
2990
3041
3136
3390
3528
3528
3560
3740
ref
25/85
VALUE AND TOLERANCE
is the resistance value at a reference temperature (in
(1)
(2)
-VALUE
⎛
⎝
1
+
R (T)
B
1
1
ln
, B
--------- -
R
1
R
=
−10.2296
−11.1334
−12.4493
−12.6814
−12.0596
−21.0704
−13.0723
−13.8973
−14.6337
−15.5322
−16.0349
−16.8717
−17.6439
ref
, C
−9.094
R
+
ref
A
1
C
and D
×
1
ln
e
(
2
A
--------- -
R
+
R
1
ref
B T ⁄
are constant values
3687.667
11903.95
4190.574
4557.725
4791.842
5229.973
5459.339
6022.726
2251.74
2887.62
3658.73
4702.74
4391.97
5759.15
+
+
D
(K)
C T
B
1
⁄
ln
2
3
For technical questions contact: [e-mail]
+
--------- -
R
D T
R
ref
NTC Thermistors, Accuracy Line
⁄
⎞
⎠
3
–
)
.
1
−2504699
−7617.13
−47158.4
−102895
−402687
−232807
−115334
−160451
−191141
−194267
−203157
(10
229098
132336
−98275
C
5
K
2
)
(1)
(2)
−11992560.91
247033800
−5914730
−7522357
−3730535
−5414091
−3328322
−6869149
−7183526
−27.4482
−25.0251
0.516652
31.96830
15.09643
(10
D
6
K
3
DETERMINATION OF THE
RESISTANCE/TEMPERATURE DEVIATION
FROM NOMINAL VALUE
The total resistance deviation is obtained by combining the
‘R
B-tolerance’.
When:
then:
When:
then:
The temperature tolerances are plotted in the graphs on the
previous page.
Example: at 0 °C, assume X = 5%, Y = 0.89% and
TC = 5.08%/K (see Table ), then:
A NTC with a R
between −1.17 and +1.17 °C.
)
Z
=
∆T
X = R
Y = resistance deviation due to B-tolerance
Z = complete resistance deviation,
TC = temperature coefficient
∆T = temperature deviation,
25
{
=
-tolerance’ and the ‘resistance deviation due to
1.05 1.0089
=
⎧
⎨
⎩
∆T
------- -
TC
Z
1
Z
25
×
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
3.354016
+
=
=
-tolerance
=
(10
--------- -
100
5.93
---------- -
5.08
------- -
TC
5
A
⎛
⎝
Z
1
1
− − − − 3
+
)
25
=
×
--------- -
100
–
X
-value of 10 kΩ has a value of 32.56 kΩ
1.167 °C
1
1
⎞
⎠
}
+
×
0.89
---------- -
100
×
(10
3.495020
3.415560
3.349290
3.243880
2.993410
2.909670
2.933908
2.884193
2.744032
2.569355
2.519107
2.460382
2.367720
2.264097
⎛
⎝
1
Vishay BCcomponents
100%
+
−4
B
--------- -
100
1
(
K
–
Y
2322 640 3/4/6....
≈
−1
1
1.17
⎫
⎬
⎭
=
)
⎞
⎠
×
–
5.9345%
1
100%
° C)
2.095959
4.955455
3.683843
2.658012
2.135133
1.632136
3.494314
4.118032
3.666944
2.626311
3.510939
3.405377
3.585140
3.278184
(10
˙
×
100
−6
C
1
K
(
%
−2
≈
)
5.93%
or Z ≈ X + Y.
www.vishay.com
(10
4.260615
4.364236
7.050455
−2.70156
−8.05672
0.719220
−7.71269
1.786790
1.375492
0.675278
1.105179
1.034240
1.255349
1.097628
)
−7
D
1
K
−3
)
73