Coated Chip NTC Datasheet (315K)

Coated
Chip Style
Features:
• Very fast response time
• -50°C to 150°C operation
• Epoxy or phenolic resin coatings
• Values from 100Ω to 1 MegΩ
• Bare or insulated lead wires
• Time Constant: 10 sec. (max.)
• Dissipation Factor:
1 mW/°C (nom.)
Coated Chip Style
MS Standard Values
R25 (Ω)
Part Number Material*
100A1002 K
500
A5002
K
1,000
A1003
K
1,000
A1003
Z
3,000
A3003
Z
5,000
A5003
Z
10,000
A1004
Z
10,000
A1004
C
20,000
A2004
C
30,000
A3004
D
50,000
A5004
D
100k
A1005
D
250k
A2505
H
500k
A5005
H
1 Meg
A1006
H
* See R/T Tables on page 59.
STANDARDS
TYPES OF THERMISTOR TOLERANCES
CodeTolerance
Point Matched:-1
Thermistor resistance value is specified at -2
one temperature (25°C standard). Tolerance -5
is given as + % of nominal resistance.-10
Curve Matched:**
+ 1%
+ 2%
+ 5%
+ 10%
CodeAccuracy
Thermistor accuracy guaranteed over -A3
a temperature range (0°C to 70°C standard). Often called interchangeable thermistors, -B3
these sensors allow direct replacement
without the need for recalibration.
-C3
+ 1.0°C
+ 0.5°C
+ 0.2°C
Other temperature ranges available.
Maximum operating temperature for curve
matched thermistors is 105˚C.
**Contact factory to determine which parts are offered with curve matching.
Basic P/N
Material
Tol. Code
Point-match
Temperature (°C)
(only used if other than 25°C)
Examples:
A1003K-2.................... Curve "K" Material, 1000Ω + 2% at 25°C
A1004Z-C3................. Curve "Z" Material, 10kΩ at 25°C with
+ 0.2°C accuracy from 0°C to 70°C
A5005H-5-150............ Curve "H" Material, 500kΩ at 25°C with
tolerance rating of + 5% at 150°C
58 Temperature Sensor Products precisionsensors.meas-spec.com
1711 139th Lane NW Andover, MN 55304
Ph: +1 800.899.9783
12-04-14
www.meas-spec.com
C
Z
D
H
Temp. Coef.
@25˚C (a25)
-3.9%/˚C
-4.0%/˚C
-4.4%/˚C
-4.7%/˚C
-5.3%/˚C
Resistance Ratio
6.93
7.58
9.07
10.45
14.09
Beta (b25/85)
3498
3694
3976
4262
4851
R0/R50
Temperature
(˚F)
(˚C)
•
•
Rt
R25
(%/˚C)
a
Curve
Dev.
Rt
R25
(%/˚C)
a
Curve
Dev.
Rt
R25
(%/˚C)
a
Curve
Dev.
Rt
R25
(%/˚C)
a
Curve
Dev.
Rt
R25
(%/˚C)
a
Curve
Dev.
-58
-50
39.46
6.2
8.2
44.20
6.3
4.3
66.75
7.1
5.5
83.47
7.4
7.0
110.1
7.4
17.4
-40
-40
21.68
5.8
6.8
23.99
5.9
3.6
33.56
6.6
4.3
40.70
6.9
5.1
55.50
7.2
15.6
-22
-30
12.38
5.4
5.6
13.53
5.6
2.9
17.67
6.2
3.5
20.78
6.5
4.1
28.40
7.0
14.6
-4
-20
7.329
5.1
4.4
7.894
5.2
2.3
9.697
5.8
2.7
11.07
6.1
3.2
14.65
6.8
13.7
14
-10
4.482
4.8
3.3
4.755
4.9
1.7
5.530
5.4
2.0
6.124
5.7
2.4
7.609
6.4
11.7
32
0
2.825
4.5
2.3
2.949
4.6
1.2
3.265
5.1
1.4
3.510
5.4
1.6
4.094
6.0
9.9
50
10
1.830
4.2
1.2
1.879
4.4
0.7
1.990
4.8
0.8
2.078
5.1
1.0
2.277
5.7
8.2
68
20
1.216
4.0
0.3
1.227
4.1
0.2
1.249
4.5
0.3
1.267
4.8
0.3
1.306
5.4
6.6
77
25
1.000
3.9
0.0
1.000
4.0
0.0
1.000
4.4
0.0
1.000
4.7
0.0
1.000
5.3
5.9
86
30
0.8270
3.7
0.6
0.8196
3.9
0.2
0.8056
4.3
0.3
0.7943
4.5
0.3
0.7709
5.1
5.2
104
40
0.5747
3.5
1.4
0.5594
3.7
0.6
0.5325
4.0
0.7
0.5106
4.3
0.9
0.4674
4.9
3.7
122
50
0.4074
3.3
2.2
0.3893
3.5
1.0
0.3601
3.8
1.2
0.3360
4.1
1.4
0.2905
4.6
2.4
140
60
0.2942
3.2
3.0
0.2760
3.4
1.3
0.2487
3.6
1.6
0.2259
3.9
1.9
0.1848
4.4
1.1
158
70
0.2161
3.0
3.6
0.1990
3.2
1.7
0.1752
3.4
2.0
0.1550
3.7
2.3
0.1202
4.2
0.0
176
80
0.1612
2.9
4.3
0.1458
3.0
2.0
0.1256
3.2
2.3
0.1084
3.5
2.7
0.07980
4.0
1.0
185
85
0.1401
2.8
4.6
0.1255
3.0
2.2
0.1071
3.2
2.5
0.09121
3.4
2.9
0.06550
3.9
1.5
194
90
0.1221
2.7
4.9
0.1084
2.9
2.3
0.09162
3.1
2.7
0.07710
3.3
3.1
0.05400
3.8
2.1
212
100
0.09375
2.6
5.5
0.08169
2.8
2.5
0.06787
2.9
3.0
0.05574
3.2
3.5
0.03720
3.6
3.1
230
110
0.07292
2.5
6.1
0.06238
2.6
2.8
0.05102
2.8
3.3
0.04092
3.0
3.9
0.02618
3.5
4.0
248
120
0.05738
2.3
6.7
0.04822
2.5
3.0
0.03887
2.7
3.6
0.03047
2.9
4.2
0.01860
3.3
4.9
257
125
0.05112
2.3
6.9
0.04258
2.5
3.1
0.03409
2.6
3.8
0.02642
2.8
4.5
0.01580
3.2
5.3
266
130
0.03770
2.4
3.3
0.02999
2.5
3.9
0.02299
2.8
4.8
0.01340
3.2
5.8
284
140
0.02979
2.3
3.5
0.02342
2.4
4.1
0.01756
2.6
5.4
0.00980
3.1
6.6
302
150
0.02377
2.2
3.7
0.01849
2.3
4.4
0.01357
2.5
6.1
0.00730
2.9
7.3
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
10kΩ at 25°C thermistor in Material "Z", you can calculate its'
nominal resistance at 100°C to be 10,000 x .06787 = 678.7Ω.
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 "C" thermistor
has an α of -3.5%/°C at 50°C. If you require a sensor that is
Temperature Sensor Products precisionsensors.meas-spec.com
accurate to within + 2.0°C at 50°C, the thermistor must have a
resistance tolerance of + 2.0°C x 3.5%/°C= + 7.0%.
•
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 59
www.meas-spec.com
NTC Thermistors
K
Std. Probes
& Assemblies
MS Resistance vs. Temperature Conversion Table Coated Chip NTC Thermistor
Material
Similar pages