NT731J Datasheet, PDF (2/2 Pages) KOA Speer Electronics, Inc. – negative tempco thermistor

NT73
negative tempco thermistor
applications and ratings (continued)
Part
Designation
Resistance
@ 25°C
Resistance
Tolerance
B Constant
@ 25°C/75°C
B Constant
Tolerance
Power
Rating
(mW)
Operating
Temperature
Range
NT732A
NT732B
1kΩ
2kΩ
2.2kΩ
2.4kΩ
3.3kΩ
4.7kΩ
5kΩ
6.8kΩ
10kΩ
15kΩ
10kΩ
20kΩ
22kΩ
30kΩ
33kΩ
47kΩ
68kΩ
100kΩ
150kΩ
50kΩ
10kΩ
15kΩ
20kΩ
22kΩ
30kΩ
33kΩ
47kΩ
68kΩ
100kΩ
150kΩ
1kΩ
2.2kΩ
3.3kΩ
4.7kΩ
6.8kΩ
10kΩ
22kΩ
33kΩ
47kΩ
68kΩ
100kΩ
K: ±10%
L: ±15%
J: ±5%; K: ±10%
L: ±15%
K:±10%; L: ±15%
J: ±5%
K: ±10%
L: ±15%
K: ±10%
L: ±15%
J: ±5%
K: ±10%
L: ±15%
3200K
3500K
3800K
3500K
3800K
3950K
4100K
3200K
3500K
3800K
±10%
±5%
±10%
±5%
±3%
±10%
±5%
5
-55°C
to
+125°C
5
environmental applications
Temperature Characteristics
10,000,000
1,000,000
100,000
100kΩ
10,000
1,000
100
10kΩ
1kΩ
3800k
3800k
3200k
10
-50 -25 0
25 50 75 100 125
Temperature (°C)
Performance Characteristics
RT/R25 Ratio vs. B Constant
Resistance 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ Resistance 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ
B Constant 3200K 3500K 3700K 3800K 4100K B Constant 3200K 3500K 3700K 3800K 4100K
Temp. (°C) Ω k Ω k Ω k Ω k Ω Temp. (°C) Ω k Ω k Ω k Ω k Ω
-55
38770 273.24 638.23 7692.5 1203.1
40
604.07 2.8809 5.5500 54.959 5.1999
-50
28840 197.67 465.81 5414.6 820.76
45
515.10 2.4202 4.6100 45.484 4.2349
-45
21706 144.85 343.25 3864.5 568.09
50
441.00 2.0421 3.8500 37.823 3.4692
-40
16517 107.43 255.22 2794.3 398.57
55
379.00 1.7302 3.2300 31.594 2.8585
-35
12698 80.577 191.37 2045.2 283.20
60
326.90 1.4718 2.7200 26.506 2.3682
-30
9857.0 61.077 144.64 1514.1 203.64
65
282.95 1.2568 2.3100 22.330 1.9721
-25
7721.2 46.759 110.13 1133.0 148.07
70
245.72 1.0771 1.9700 18.886 1.6504
-20
6100.5 36.137 83.710 856.49 108.37
75
214.08 0.92637 1.6800 16.035 1.3877
-15
4858.7 28.173 64.190 653.63 80.182
80
187.08 0.79937 1.4500 13.663 1.1724
-10
3899.0 22.147 49.640 503.31 59.943
85
163.96 0.69199 1.2500 11.682 0.99491
-5
3151.3 17.546 38.680 390.86 45.252
90
144.11 0.60087 1.0800 10.022 0.84926
0
2564.2 14.004 30.370 305.97 34.478
95
127.00 0.52329 0.94000 8.6257 0.72802
5
2099.9 11.256 23.970 241.34 26.473
100
112.21 0.45701 0.82000 7.4466 0.62662
10
1730.0 9.1063 19.070 191.73 20.506
105
99.377 0.40016 0.72000 6.4466 0.54156
15
1433.5 7.4135 15.270 153.36 16.016
110
88.224 0.35129 0.63000 5.5968 0.46982
20
1194.2 6.0712 12.320 123.46 12.608
115
78.501 0.30915 0.56000 4.8721 0.40906
25
1000.0 5.0000 10.000 100.00 10.000
120
70.004 0.27272 0.49000 4.2523 0.35741
30
841.48 4.1398 8.1700 81.470 7.9880
125
62.558 0.24114 0.44000 3.7207 0.31332
35
711.39 3.4451 6.7100 66.739 6.4242
Note: RT/R25 ratio is the resistance at temperature (T) divided by the nominal resistance at 25°C. The RT/R25 ratio value is multiplied
by the thermistor’s nominal 25°C value to determine the nominal resistance value at a given temperature in the chart above.
Parameter
Resistance
Requirement ∆ R
Limit
Typical
Within specified
tolerance
––
25°C
Test Method
B Constant
Within specified
tolerance
––
+25°C/+75°C
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Load Life
High Temperature Exposure
High Temperature Exposure
±1%, ±2%:1kΩ
±3.0%
±3.0%
±3.0%
±3.0%
––
±0.5%, ±1%:1kΩ
±1.3%
±1.1%
±2.5%
±1.6%
7 (Reference)
260°C ± 5°C, 10 seconds ± 1 second
-55°C (30 minutes),+125°C (30 minutes), 50 cycles
40°C ± 2°C, 90 - 95% RH, 1000 hours
80°C ± 3°C, DC5mW, 1000 hours
80°C, 1000 hours
125°C, 1000 hours
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/06/08
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: [phone] • www.koaspeer.com
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