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Specifications
Resistance @ 25℃:
50kΩ
Power(Watts):
450mW
Pitch:
2.5mm
Operating Temperature:
-30℃~+125℃
Tolerance:
±20%
B Constant (25℃/100℃):
-
Steady State Current (Max):
-
Thermal Time Constant:
20s
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
4300K
B Constant Tolerance:
±10%
Mfr. Part #:
MF11 503M
Package:
Through Hole,P=2.5mm
Key Attributes
Model Number:
MF11 503M
Product Description
Product Overview
The MF11 series is a compensated NTC thermistor manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. Designed for temperature measurement and control, these thermistors offer reliable performance across a wide operating temperature range. They are suitable for various industrial applications requiring accurate temperature sensing and compensation.
Product Attributes
- Brand: Shiheng
- Origin: Nanjing, China
- Product Type: Compensated NTC Thermistor
- Model Series: MF11
- Encapsulation Material: Epoxy Resin
- Lead Wire Material: Tinned copper-clad steel wire
- Body Color: Green
- Marking Color: Black
- Certifications: ISO9001:2008, ISO14001:2004, ROSH, CQC, UL (E240991), TUV (R50245892)
Technical Specifications
Model: MF11-503M
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.1, Test Power 0.1mW | K | 50K20% |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 430010% |
| Dissipation Factor | In still air | mW/ | Approx. 4.5 | |
| Time Constant | In still air | sec | Approx. 20 | |
| Insulation Resistance | / | 1000V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -30 ~ 125 | |
| Maximum Rated Power | Pmax | / | mW | 450 |
| Lead Strength (Tensile) | / | 0.35| / | No visible damage, R25 R/R3% | |
| Solderability | / | 2455, 2-3 sec | / | 95% tin-plated area |
| Resistance to Soldering Heat | / | Pot temperature: 2605, Immersion depth: 6mm from body, Time: 51 sec | / | R25 R/R3% |
| Steady State Damp Heat | / | 402, 932% RH, 500 hours | / | R25 R/R3% |
| Temperature Cycling | / | -30(30min)25(5min)125(30min)25(5min), 5 cycles | / | R25 R/R3% |
| High Temperature Storage | / | 1255, 1000 hours | / | R25 R/R5% |
| Low Temperature Storage | / | -305, 1000 hours | / | R25 R/R5% |
Model Number Explanation
MF11 503 M
- MF11: Compensated NTC Thermistor
- 503: Zero-power resistance at 25 is 50K
- M: Resistance Tolerance Code (J-5%, K-10%, M-20%)
Usage Precautions
- Intended Use: Temperature measurement and control.
- Soldering: When soldering with a soldering iron, maintain a distance of at least 2mm from the coating layer. 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 storage in environments with corrosive gases or direct sunlight.
- Packaging: Reseal packaging after opening for storage.
Dimensions
(Unit: mm) - Dimensions not provided in the source text.
Temperature Resistance Table
Model: MF11-503M
R25: 50K
B25/50: 4300K
| Temperature () | Resistance () | Temperature () | Resistance () | Temperature () | Resistance () | Temperature () | Resistance () | Temperature () | Resistance () |
|---|---|---|---|---|---|---|---|---|---|
| -30 | 1028.5 | -4 | 215.137 | 22 | 57.641 | 48 | 17.482 | 74 | 5.952 |
| -29 | 966.221 | -3 | 203.685 | 23 | 54.964 | 49 | 16.729 | 75 | 5.731 |
| -28 | 907.422 | -2 | 192.923 | 24 | 52.419 | 50 | 16.011 | 76 | 5.519 |
| -27 | 852.024 | -1 | 182.804 | 25 | 50 | 51 | 15.326 | 77 | 5.318 |
| -26 | 799.924 | 0 | 177 | 26 | 47.698 | 52 | 14.673 | 78 | 5.125 |
| -25 | 751 | 1 | 164.325 | 27 | 45.509 | 53 | 14.051 | 79 | 4.941 |
| -24 | 705.114 | 2 | 155.886 | 28 | 43.427 | 54 | 13.457 | 80 | 4.766 |
| -23 | 662.123 | 3 | 147.933 | 29 | 41.445 | 55 | 12.89 | 81 | 4.598 |
| -22 | 621.876 | 4 | 140.435 | 30 | 39.558 | 56 | 12.35 | 82 | 4.438 |
| -21 | 584.223 | 5 | 133.361 | 31 | 37.763 | 57 | 11.835 | 83 | 4.285 |
| -20 | 549.012 | 6 | 126.685 | 32 | 36.053 | 58 | 11.344 | 84 | 4.139 |
| -19 | 516.097 | 7 | 120.379 | 33 | 34.425 | 59 | 10.876 | 85 | 4 |
| -18 | 485.335 | 8 | 114.422 | 34 | 32.875 | 60 | 10.429 | 86 | 3.866 |
| -17 | 456.587 | 9 | 108.79 | 35 | 31.398 | 61 | 10.002 | 87 | 3.739 |
| -16 | 429.722 | 10 | 104.5 | 36 | 29.992 | 62 | 9.596 | 88 | 3.617 |
| -15 | 404.615 | 11 | 98.423 | 37 | 28.652 | 63 | 9.208 | 89 | 3.501 |
| -14 | 381.146 | 12 | 93.652 | 38 | 27.375 | 64 | 8.838 | 90 | 3.39 |
| -13 | 359.204 | 13 | 89.133 | 39 | 26.159 | 65 | 8.485 | 91 | 3.284 |
| -12 | 338.684 | 14 | 84.852 | 40 | 25 | 66 | 8.148 | 92 | 3.182 |
| -11 | 319.486 | 15 | 80.793 | 41 | 23.895 | 67 | 7.826 | 93 | 3.085 |
| -10 | 301.519 | 16 | 76.946 | 42 | 22.842 | 68 | 7.52 | 94 | 2.993 |
| -9 | 284.696 | 17 | 73.296 | 43 | 21.838 | 69 | 7.227 | 95 | 2.904 |
| -8 | 268.938 | 18 | 69.832 | 44 | 20.882 | 70 | 6.948 | 96 | 2.82 |
| -7 | 254.17 | 19 | 66.545 | 45 | 19.97 | 71 | 6.681 | 97 | 2.739 |
| -6 | 240.322 | 20 | 63.423 | 46 | 19.101 | 72 | 6.427 | 98 | 2.662 |
| -5 | 227.331 | 21 | 60.458 | 47 | 18.272 | 73 | 6.184 | 99 | 2.588 |
| 100 | 2.5 | 125 | 1.5 |
Contact 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
1810161311_Nanjing-Shiheng-Elec-MF11-503M_C123362.pdf
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