NTC Standard Disc Datasheet (290K)

Standard
Disc Style
Features:
• Rugged, cost effective design
• -50°C to 150°C Operation
• Bare or epoxy coated
• Values from 100Ω to 20,000Ω
• Temperature measurement, control or
compensation
• High sensitivity to changes in temperature
• Other tolerances and options available
Standard Disc Style
Description:
MS standard disc style thermistors are ideal for use in
those applications where low cost and a rugged design
are desired. Thermistors are available either coated or
uncoated and are available in a variety of resistance
values, curves and tolerances to suit a wide variety of
applications. Contact the factory for specific design or
application information or the availability of options.
MS Standard Disc Style Thermistors
Part
Number
A (max.)
B (max.)
C (typ.)
in
mm
in
mm
in
mm
D
AWG
d
(mW/˚C)
t
sec.
K
0.360
9.14
0.150
3.81
0.250
6.35
24
9
35
200
K
0.260
6.60
0.160
4.06
0.156
3.96
24
7
20
D2502K10
250
K
0.260
6.60
0.160
4.06
0.156
3.96
24
7
20
D5002K10
500
K
0.215
5.46
0.160
4.06
0.080
2.03
26
5
15
D1003K10
1,000
K
0.150
3.81
0.150
3.81
0.080
2.03
26
3
10
D1003Z10
1,000
Z
0.260
6.60
0.140
3.56
0.156
3.96
24
7
20
D2003Z10
2,000
Z
0.215
5.46
0.140
3.56
0.080
2.03
26
7
20
D2253Z10
2,252
Z
0.215
5.46
0.140
3.56
0.080
2.03
26
5
15
D3003Z10
3,000
Z
0.215
5.46
0.150
3.81
0.080
2.03
26
5
15
D5003Z10
5,000
Z
0.150
3.81
0.140
3.56
0.080
2.03
26
3
10
D1004Z10
10,000
Z
0.150
3.81
0.160
4.06
0.080
2.03
26
3
10
D2004Z10
20,000
Z
0.150
3.81
0.160
4.06
0.080
2.03
26
3
10
R25 (Ω)
Matl*
D1002K10
100
D2002K10
Standard resistance tolerances available are: ±10%, ±5%, ±2% @25˚C
Basic P/N Material
Wire Type Tol. Code
Example:
D1003K10-2
D5003Z10-5-100
56 Temperature Sensor Products precisionsensors.meas-spec.com
*See R/T tables on page 57.
Point-match Temperature (°C)
(only used if other than 25°C)
Curve "K" Material, 1000Ω + 2% at 25°C
Curve "Z" Material, 5kΩ at 25°C with tolerance rating of ±5% at 100˚C
1711 139th Lane NW Andover, MN 55304
Ph: +1 800.899.9783
12-04-14
www.meas-spec.com
MS Resistance vs. Temperature Conversion Table Disc Style NTC Thermistor
Material
K
Z
Temperature Coef.
@25˚C (α25)
-3.9 %/˚C
-4.4 %/˚C
Resistance Ratio
R0/R50
6.93
9.07
Beta (β25/85)
3498
3976
Temperature
(˚C)
Rt
R25
α
(%/˚C)
Curve
Dev.
Rt
R25
α
(%/˚C)
Curve
Dev.
-58
-50
39.46
6.2
8.2
66.75
7.1
5.5
-40
-40
21.68
5.8
6.8
33.56
6.6
4.3
-22
-30
12.38
5.4
5.6
17.67
6.2
3.5
-4
-20
7.389
5.1
4.4
9.697
5.8
2.7
14
-10
4.482
4.8
3.3
5.530
5.4
2.0
32
0
2.825
4.5
2.3
3.265
5.1
1.4
50
10
1.830
4.2
1.2
1.990
4.8
0.8
68
20
1.216
4.0
0.3
1.249
4.5
0.3
77
25
1.000
3.9
0.0
1.000
4.4
0.0
86
30
0.8270
3.7
0.6
0.8056
4.3
0.3
104
40
0.5747
3.5
1.4
0.5325
4.0
0.7
122
50
0.4074
3.3
2.2
0.3601
3.8
1.2
140
60
0.2942
3.2
3.0
0.2487
3.6
1.6
158
70
0.2161
3.0
3.6
0.1752
3.4
2.0
176
80
0.1612
2.9
4.3
0.1256
3.2
2.3
185
85
0.1401
2.8
4.6
0.1071
3.2
2.5
194
90
0.1221
2.7
4.9
0.09162
3.1
2.7
212
100
0.09376
2.6
5.5
0.06787
2.9
3.0
230
110
0.07292
2.5
6.1
0.05102
2.8
3.3
248
120
0.05738
2.3
6.7
0.03887
2.7
3.6
257
125
0.05112
2.3
6.9
0.03409
2.6
3.8
266
130
0.02999
2.5
3.9
284
140
0.02342
2.4
4.1
302
150
0.01849
2.3
4.4
This R/T Conversion Table is provided for reference only. MS uses the Steinhart-Hart equation to calculate the
nominal Rt/R25 value. 1°C tables are available upon request.
•
Rt/R25— The ratio of the thermistor resistance at any temperature
divided by its resistance at 25°C. For example, if you select a
500Ω at 25°C thermistor in Material "K", you can calculate its
nominal resistance at 100°C to be 500 x .09376 = 46.88Ω.
•
α — Negative temperature coefficient of resistance expressed in
%/°C. This is the percentage change in thermistor resistance for
a 1°C change in its body temperature. α is particularly useful in
calculating the required resistance tolerance necessary to guarantee sensor accuracy. For example, a Material "Z" thermistor
has an α of -3.80%/°C at 50°C. If you require a sensor that is
accurate to within + 2.0°C at 50°C, the thermistor must have a
resistance tolerance of (+ 2.0°C) x (3.80%/°C)= + 5.6%.
Temperature Sensor Products precisionsensors.meas-spec.com
•
Curve Dev. — Applies to thermistors that are point matched
at 25°C. The Curve Dev. (%) must be added to the thermistor
tolerance at 25°C to calculate the total tolerance or maximum
deviation at any temperature. Curve Dev. accounts for the
curve variance that occurs within any given batch or lot of
thermistors. For example, if you specify a Material "Z" device
with a + 5% tolerance at 25°C, it will have a total tolerance at 80°C
of (+ 5%) +(±2.3%)= ±7.3%.
1711 139th Lane NW Andover, MN 55304
Ph: +1 800.899.9783
12-04-14 57
www.meas-spec.com
NTC Thermistors
(˚F)