Interchangeable Precision Radial Epoxy Coated Thermometrics NTC
Thermistor 2.7KOhm 3950 For Car Automotive Electronics
Short Describ
Epoxy Encapsulated Precision Interchangeable NTC Thermistor
utilizing high stability pressed-disk ceramic sensor for general
applications.
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Features
• Advanced NTC technology
• Temperature range from -55 °C to +125 °C
• Highly resistant to thermal shocks
• Small body diameter of max. 2.5 mm
• AEC-Q200 qualified
• Fast response time
• High sensitivity
• Delivery in bulk or in tape with extra long leads (for automatic
mounting)
• Thermally Conductive Epoxy Coating for good mechanical strength
and resistance to solvents
• Non-condensing Moisture Environments
• RoHS Compliance
• 2,700 ohm Resistance @ 25°C
• Interchangeable ±0.2°C, 0°C to 70°C
• Pressed Disk Ceramic Sensor
Application
Temperature sensing, control and compensation.E.g. inlet air
temperature sensing thermistors or ECT in
automotive applications, sensor elements in industrial and
commercial applications, heating systems and industrial systems.
High-range Temperature Applications
Tight Tolerance Instrumentation
General Applications Requiring Stability
Applications Requiring Sensing Small Changes in Temperature
Non-condensing Moisture Environments
Allows use in Applications World-wide
Automotive engine management
Air conditioning
Medical
Clinical thermometers
Blood analysis
Dimension (mm)
A | B | C | D | L |
Max 2.5 | Max 4.0 | 1.7±.5 | 0.3±0.05 | 25±1 |
Max 3 | Max 4.5 | 2.2±.5 | 0.45±0.05 | 25±1 |
Materials
NO | Material Name | Item/PN |
E. | Element | R25=2.7KΩ±1% B25/50=3950±1% |
B | Coating | Epoxy resin |
D. | Lead Wire | CP Wire |
Performances
NO | Item | Sign | Test Conditions | Min. | Normal value | Max. | Unit |
1. | Resistance at 25℃ | R25 | Ta=25±0.05℃ PT≦0.1mw | 2.673 | 2.7 | 2.727 | kΩ |
2. | B Value | B25/50 |
| 3910.5 | 3950 | 3989.5 | k |
3. | Dissipation factor | σ | In still air | ≥2 | mw/℃ |
4. | Time constant | τ | In still air | ≤7 | sec |
5. | Operating temp.range | / | / | -55 | / | +125 | ℃ |
6 | Insulation resistance | / | 100V DC 1min | ≥100 | MΩ |
7. | Maximum rated power | Pmax | / | ≤50 | mW |
MOUNTING
The thermistors are suitable for all standard assembly processes
like crimping, soldering, welding. The parameters of the assembly
process should be chosen in accordance with the lead-wire material
(tinned nickel) and validated in application. The mounting process
should be in compliance with the following guidelines and
recommendations:
• Peeling forces on the leads should be reduced to a minimum and
should never exceed 3 N
• Avoid large temperature gradients between the welding region and
the sensor
PACKAGING
• Bulk components are delivered in boxes of 500 components
Resistance Vs. Temperature Chart
R－T CONVERSION TABLE |
R25=2.7KΩ±1% B25/50=3950K±1% |
T/℃ | Rmax | Rcen | Rmin | T/℃ | Rmax | Rcen | Rmin |
-55 | 211.966 | 223.777 | 236.223 | -18 | 21.618 | 22.303 | 23.006 |
-54 | 197.640 | 208.505 | 219.946 | -17 | 20.470 | 21.106 | 21.760 |
-53 | 184.388 | 194.389 | 204.911 | -16 | 19.389 | 19.981 | 20.588 |
-52 | 172.123 | 181.332 | 191.014 | -15 | 18.371 | 18.921 | 19.486 |
-51 | 160.761 | 169.246 | 178.160 | -14 | 17.411 | 17.923 | 18.448 |
-50 | 150.230 | 158.051 | 166.262 | -13 | 16.507 | 16.983 | 17.471 |
-49 | 140.463 | 147.675 | 155.242 | -12 | 15.654 | 16.097 | 16.551 |
-48 | 131.398 | 138.052 | 145.027 | -11 | 14.850 | 15.262 | 15.684 |
-47 | 122.980 | 129.121 | 135.555 | -10 | 14.092 | 14.475 | 14.867 |
-46 | 115.158 | 120.828 | 126.764 | -9 | 13.376 | 13.732 | 14.097 |
-45 | 107.885 | 113.122 | 118.602 | -8 | 12.700 | 13.032 | 13.371 |
-44 | 101.119 | 105.958 | 111.018 | -7 | 12.062 | 12.371 | 12.686 |
-43 | 94.821 | 99.294 | 103.968 | -6 | 11.459 | 11.746 | 12.040 |
-42 | 88.955 | 93.092 | 97.411 | -5 | 10.890 | 11.157 | 11.429 |
-41 | 83.489 | 87.316 | 91.309 | -4 | 10.351 | 10.600 | 10.853 |
-40 | 78.393 | 81.934 | 85.626 | -3 | 9.843 | 10.074 | 10.309 |
-39 | 73.640 | 76.918 | 80.333 | -2 | 9.361 | 9.576 | 9.795 |
-38 | 69.204 | 72.239 | 75.399 | -1 | 8.906 | 9.106 | 9.310 |
-37 | 65.062 | 67.873 | 70.798 | 0 | 8.475 | 8.662 | 8.851 |
-36 | 61.193 | 63.797 | 66.505 | 1 | 8.068 | 8.241 | 8.417 |
-35 | 57.577 | 59.990 | 62.498 | 2 | 7.682 | 7.843 | 8.006 |
-34 | 54.195 | 56.433 | 58.756 | 3 | 7.316 | 7.466 | 7.618 |
-33 | 51.033 | 53.107 | 55.260 | 4 | 6.970 | 7.109 | 7.250 |
-32 | 48.073 | 49.996 | 51.992 | 5 | 6.642 | 6.771 | 6.902 |
-31 | 45.301 | 47.086 | 48.936 | 6 | 6.331 | 6.451 | 6.573 |
-30 | 42.706 | 44.362 | 46.077 | 7 | 6.036 | 6.148 | 6.261 |
-29 | 40.274 | 41.810 | 43.402 | 8 | 5.757 | 5.860 | 5.965 |
-28 | 37.994 | 39.420 | 40.896 | 9 | 5.492 | 5.588 | 5.685 |
-27 | 35.855 | 37.180 | 38.550 | 10 | 5.243 | 5.333 | 5.423 |
-26 | 33.850 | 35.080 | 36.351 | 11 | 5.001 | 5.084 | 5.167 |
-25 | 31.967 | 33.110 | 34.289 | 12 | 4.775 | 4.851 | 4.928 |
-24 | 30.199 | 31.261 | 32.356 | 13 | 4.559 | 4.630 | 4.702 |
-23 | 28.539 | 29.526 | 30.543 | 14 | 4.355 | 4.421 | 4.487 |
-22 | 26.980 | 27.896 | 28.841 | 15 | 4.161 | 4.222 | 4.283 |
-21 | 25.513 | 26.365 | 27.243 | 16 | 3.976 | 4.032 | 4.089 |
-20 | 24.135 | 24.927 | 25.742 | 17 | 3.801 | 3.853 | 3.905 |
-19 | 22.838 | 23.574 | 24.332 | 18 | 3.634 | 3.682 | 3.730 |
R－T CONVERSION TABLE |
R25=2.7KΩ±1% B25/50=3950K±1% |
T/℃ | Rmax | Rcen | Rmin | T/℃ | Rmax | Rcen | Rmin |
19 | 3.475 | 3.520 | 3.564 | 56 | 0.764 | 0.782 | 0.799 |
20 | 3.324 | 3.365 | 3.407 | 57 | 0.736 | 0.753 | 0.771 |
21 | 3.181 | 3.219 | 3.257 | 58 | 0.710 | 0.727 | 0.744 |
22 | 3.044 | 3.079 | 3.114 | 59 | 0.684 | 0.701 | 0.717 |
23 | 2.914 | 2.946 | 2.978 | 60 | 0.660 | 0.676 | 0.692 |
24 | 2.790 | 2.820 | 2.849 | 61 | 0.637 | 0.652 | 0.668 |
25 | 2.673 | 2.700 | 2.727 | 62 | 0.614 | 0.629 | 0.645 |
26 | 2.558 | 2.585 | 2.612 | 63 | 0.593 | 0.608 | 0.623 |
27 | 2.449 | 2.476 | 2.503 | 64 | 0.572 | 0.587 | 0.602 |
28 | 2.345 | 2.372 | 2.399 | 65 | 0.552 | 0.566 | 0.581 |
29 | 2.246 | 2.273 | 2.299 | 66 | 0.533 | 0.547 | 0.561 |
30 | 2.152 | 2.178 | 2.205 | 67 | 0.515 | 0.528 | 0.542 |
31 | 2.062 | 2.088 | 2.115 | 68 | 0.497 | 0.511 | 0.524 |
32 | 1.977 | 2.002 | 2.029 | 69 | 0.480 | 0.493 | 0.507 |
33 | 1.895 | 1.921 | 1.946 | 70 | 0.464 | 0.477 | 0.490 |
34 | 1.817 | 1.843 | 1.868 | 71 | 0.448 | 0.461 | 0.474 |
35 | 1.743 | 1.768 | 1.793 | 72 | 0.433 | 0.446 | 0.458 |
36 | 1.672 | 1.697 | 1.722 | 73 | 0.419 | 0.431 | 0.443 |
37 | 1.605 | 1.629 | 1.654 | 74 | 0.405 | 0.417 | 0.429 |
38 | 1.540 | 1.564 | 1.588 | 75 | 0.392 | 0.403 | 0.415 |
39 | 1.479 | 1.502 | 1.526 | 76 | 0.379 | 0.390 | 0.402 |
40 | 1.420 | 1.443 | 1.467 | 77 | 0.367 | 0.378 | 0.389 |
41 | 1.364 | 1.387 | 1.410 | 78 | 0.355 | 0.366 | 0.377 |
42 | 1.310 | 1.333 | 1.356 | 79 | 0.343 | 0.354 | 0.365 |
43 | 1.259 | 1.281 | 1.304 | 80 | 0.332 | 0.343 | 0.353 |
44 | 1.210 | 1.232 | 1.254 | 81 | 0.322 | 0.332 | 0.342 |
45 | 1.163 | 1.184 | 1.206 | 82 | 0.312 | 0.322 | 0.332 |
46 | 1.118 | 1.139 | 1.161 | 83 | 0.302 | 0.311 | 0.321 |
47 | 1.075 | 1.096 | 1.117 | 84 | 0.292 | 0.302 | 0.312 |
48 | 1.035 | 1.055 | 1.075 | 85 | 0.283 | 0.293 | 0.302 |
49 | 0.995 | 1.015 | 1.036 | 86 | 0.274 | 0.284 | 0.293 |
50 | 0.956 | 0.976 | 0.995 | 87 | 0.266 | 0.275 | 0.284 |
51 | 0.922 | 0.941 | 0.961 | 88 | 0.258 | 0.267 | 0.276 |
52 | 0.888 | 0.906 | 0.926 | 89 | 0.250 | 0.258 | 0.267 |
53 | 0.855 | 0.873 | 0.892 | 90 | 0.242 | 0.251 | 0.259 |
54 | 0.823 | 0.841 | 0.860 | 91 | 0.235 | 0.243 | 0.252 |
55 | 0.793 | 0.811 | 0.829 | 92 | 0.228 | 0.236 | 0.244 |
R－T CONVERSION TABLE |
R25=2.7KΩ±1% B25/50=3950K±1% |
T/℃ | Rmax | Rcen | Rmin | T/℃ | Rmax | Rcen | Rmin |
93 | 0.221 | 0.229 | 0.237 |
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94 | 0.215 | 0.222 | 0.230 |
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95 | 0.208 | 0.216 | 0.224 |
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96 | 0.202 | 0.210 | 0.217 |
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97 | 0.196 | 0.203 | 0.211 |
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98 | 0.191 | 0.198 | 0.205 |
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99 | 0.185 | 0.192 | 0.199 |
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100 | 0.180 | 0.187 | 0.193 |
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101 | 0.175 | 0.181 | 0.188 |
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102 | 0.170 | 0.176 | 0.183 |
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103 | 0.165 | 0.171 | 0.178 |
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104 | 0.160 | 0.166 | 0.173 |
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105 | 0.156 | 0.162 | 0.168 |
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106 | 0.151 | 0.157 | 0.164 |
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107 | 0.147 | 0.153 | 0.159 |
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108 | 0.143 | 0.149 | 0.155 |
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109 | 0.139 | 0.145 | 0.151 |
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110 | 0.135 | 0.141 | 0.147 |
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111 | 0.132 | 0.137 | 0.143 |
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112 | 0.128 | 0.133 | 0.139 |
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113 | 0.125 | 0.130 | 0.135 |
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114 | 0.121 | 0.127 | 0.132 |
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115 | 0.118 | 0.123 | 0.128 |
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116 | 0.115 | 0.120 | 0.125 |
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117 | 0.112 | 0.117 | 0.122 |
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118 | 0.109 | 0.114 | 0.119 |
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119 | 0.106 | 0.111 | 0.116 |
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120 | 0.104 | 0.108 | 0.113 |
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121 | 0.101 | 0.105 | 0.110 |
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122 | 0.098 | 0.103 | 0.107 |
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123 | 0.096 | 0.100 | 0.104 |
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124 | 0.093 | 0.098 | 0.102 |
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125 | 0.091 | 0.095 | 0.099 |
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