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Specifications
Resistance @ 25℃:
470kΩ
Power(Watts):
450mW
Pitch:
2.5mm
Operating Temperature:
-30℃~+125℃
Tolerance:
±10%
B Constant (25℃/100℃):
-
Steady State Current (Max):
-
Thermal Time Constant:
20s
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
4750K
B Constant Tolerance:
±10%
Mfr. Part #:
MF11 474K
Package:
Through Hole,P=2.5mm
Key Attributes
Model Number:
MF11 474K
Product Description
Product Overview
The MF11 series compensated NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for temperature measurement and control applications. These thermistors offer reliable performance with a specified resistance value at 25 and a B value, ensuring accurate temperature sensing.
Product Attributes
- Brand: Shiheng Electronics
- Origin: Nanjing, China
- Product Type: Compensated NTC Thermistor
- Series: MF11
- Encapsulation Material: Epoxy Resin
- Lead Material: Tinned Copper Clad Steel Wire
- Body Color: Green
- Marking Color: Black
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROSH, CQC, UL (E240991), TUV (R50245892)
Technical Specifications
Model: MF11-474K
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.1, Test Power 0.1mW | K | 470K10% |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 475010% |
| Dissipation Factor | Still air | mW/ | Approx. 4.5 | |
| Time Constant | Still air | sec | Approx. 20 | |
| Insulation Resistance | / | 1000V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -30 ~ 125 | |
| Maximum Rated Power | Pmax | / | mW | 450 |
Reliability and Testing
| Item | Test Conditions & Method | Technical Requirements |
|---|---|---|
| Lead Strength | Tension: Wire diameter (mm) 0.35 | No visible damage R/R 3% |
| Solderability | Temperature 2455, Time 2-3 sec | Tinning Area 95% |
| Resistance to Soldering Heat | Pot temperature: 2605, Immersion depth 6mm from the resistor body, Time 51 sec | R/R 3% |
| Steady State Damp Heat | Temperature: 402, Humidity: 932%, Time: 500 hours | R/R 3% |
| Temperature Cycling | -30 30min 25 5min 125 30min 25 5min, Repeat 5 times | R/R 3% |
| High Temperature Storage | Temperature: 1255, Time: 1000 hours | R/R 5% |
| Low Temperature Storage | Temperature: -305, Time: 1000 hours | R/R 5% |
Usage Precautions
- Application: Temperature measurement and control.
- Soldering: When soldering with an iron, the distance from the coating layer should be at least 2mm. Soldering temperature should be below 360, and soldering time should be less than 3 seconds.
- Storage Temperature: -10 to 40.
- Storage Humidity: 75% RH.
- Environmental Considerations: Avoid storing in environments with corrosive gases and direct sunlight.
- Packaging: After opening, reseal and store properly.
Product Model Explanation
MF11 474 K
- MF11: Compensated NTC Thermistor
- 474: Zero-power resistance at 25 is 470K
- K: Resistance Tolerance Code (J-5%, K-10%, M-20%)
Manufacturer Information
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing, 211121, China
TEL: 025-52121868
FAX: 025-52122373
Email: sales@shiheng.com.cn
Website: Http://www.shiheng.com.cn
Resistance Temperature Table (Sample)
R25=470K, B25/50=4750K
| Temperature () | Resistance () |
|---|---|
| -30 | 17263.1 |
| -29 | 15922.2 |
| -28 | 14702.8 |
| -27 | 13591.3 |
| -26 | 12575.9 |
| -25 | 11646.6 |
| -24 | 10794.4 |
| -23 | 10011.9 |
| -22 | 9292.32 |
| -21 | 8629.79 |
| -20 | 8019.14 |
| -19 | 7455.75 |
| -18 | 6935.51 |
| -17 | 6454.74 |
| -16 | 6010.14 |
| -15 | 5598.72 |
| -14 | 5217.79 |
| -13 | 4864.9 |
| -12 | 4537.83 |
| -11 | 4234.55 |
| -10 | 3953.21 |
| -9 | 3692.13 |
| -8 | 3449.75 |
| -7 | 3224.64 |
| -6 | 3015.51 |
| -5 | 2821.14 |
| -4 | 2640.44 |
| -3 | 2472.38 |
| -2 | 2316.03 |
| -1 | 2170.52 |
| 0 | 2021 |
| 1 | 1908.89 |
| 2 | 1791.35 |
| 3 | 1681.8 |
| 4 | 1579.67 |
| 5 | 1484.41 |
| 6 | 1395.52 |
| 7 | 1312.56 |
| 8 | 1235.09 |
| 9 | 1162.72 |
| 10 | 1095.1 |
| 11 | 1031.87 |
| 12 | 972.735 |
| 13 | 917.4 |
| 14 | 865.601 |
| 15 | 817.091 |
| 16 | 771.641 |
| 17 | 729.04 |
| 18 | 689.091 |
| 19 | 651.613 |
| 20 | 616.437 |
| 21 | 583.406 |
| 22 | 552.377 |
| 23 | 523.214 |
| 24 | 495.794 |
| 25 | 470 |
| 26 | 445.724 |
| 27 | 422.869 |
| 28 | 401.34 |
| 29 | 381.052 |
| 30 | 361.925 |
| 31 | 343.885 |
| 32 | 326.862 |
| 33 | 310.793 |
| 34 | 295.616 |
| 35 | 281.278 |
| 36 | 267.725 |
| 37 | 254.91 |
| 38 | 242.788 |
| 39 | 231.315 |
| 40 | 220.454 |
| 41 | 210.168 |
| 42 | 200.422 |
| 43 | 191.185 |
| 44 | 182.427 |
| 45 | 174.12 |
| 46 | 166.238 |
| 47 | 158.757 |
| 48 | 151.653 |
| 49 | 144.906 |
| 50 | 138.496 |
| 51 | 132.403 |
| 52 | 126.611 |
| 53 | 121.103 |
| 54 | 115.862 |
| 55 | 110.876 |
| 56 | 106.129 |
| 57 | 101.61 |
| 58 | 97.306 |
| 59 | 93.206 |
| 60 | 89.3 |
| 61 | 85.576 |
| 62 | 82.026 |
| 63 | 78.641 |
| 64 | 75.413 |
| 65 | 72.333 |
| 66 | 69.394 |
| 67 | 66.589 |
| 68 | 63.911 |
| 69 | 61.355 |
| 70 | 58.913 |
| 71 | 56.581 |
| 72 | 54.353 |
| 73 | 52.224 |
| 74 | 50.19 |
| 75 | 48.245 |
| 76 | 46.386 |
| 77 | 44.608 |
| 78 | 42.908 |
| 79 | 41.282 |
| 80 | 39.727 |
| 81 | 38.239 |
| 82 | 36.815 |
| 83 | 35.452 |
| 84 | 34.148 |
| 85 | 32.9 |
| 86 | 31.704 |
| 87 | 30.56 |
| 88 | 29.464 |
| 89 | 28.414 |
| 90 | 27.409 |
| 91 | 26.446 |
| 92 | 25.523 |
| 93 | 24.639 |
| 94 | 23.792 |
| 95 | 22.98 |
| 96 | 22.202 |
| 97 | 21.456 |
| 98 | 20.742 |
| 99 | 20.056 |
| 100 | 18.8 |
| 101 | 18.769 |
| 102 | 18.165 |
| 103 | 17.586 |
| 104 | 17.03 |
| 105 | 16.497 |
| 106 | 15.986 |
| 107 | 15.495 |
| 108 | 15.025 |
| 109 | 14.574 |
| 110 | 14.141 |
| 111 | 13.725 |
| 112 | 13.327 |
| 113 | 12.944 |
| 114 | 12.577 |
| 115 | 12.225 |
| 116 | 11.887 |
| 117 | 11.563 |
| 118 | 11.252 |
| 119 | 10.953 |
| 120 | 10.667 |
| 121 | 10.392 |
| 122 | 10.128 |
| 123 | 9.875 |
| 124 | 9.632 |
| 125 | 9.4 |
1810161324_Nanjing-Shiheng-Elec-MF11-474K_C123368.pdf
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