Product Overview
The MF51 series glass-sealed NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for precise temperature measurement and control applications. These components offer reliable performance across a wide operating temperature range and are manufactured with high-quality standards, ensuring accuracy and durability. Their robust construction makes them suitable for various industrial and electronic applications requiring sensitive thermal monitoring.
Product Attributes
- Brand: Nanjing Shiheng Electronics Technology Co., Ltd.
- Product Type: Glass-Sealed NTC Thermistor
- Series: MF51
- Certifications: ISO9001:2015, IATF16949:2016, ISO14001:2015, ROHS
- Origin: China
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement | |
|---|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | T=250.01, Test Power 0.1mW | K | 10K1% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) Ta=250.01, Tb=500.01 | K | 39501% | |
| Dissipation Factor | Still air | mW/ | Approx. 0.9 | ||
| Time Constant | Still air | sec | Approx. 7 | ||
| Withstand Voltage | / | / | / | 500V/AC, 1min, No breakdown or arcing | |
| Insulation Resistance | / | 500V/DC, 1min | M | 100 | |
| Operating Temperature Range | / | / | -40 ~ 250 | ||
| Maximum Rated Power | Pmax | / | mW | 35 | |
| Resistance-Temperature Characteristic | / | / | / | See Appendix 1 | |
| Resistance Tolerance | / | / | / | See Appendix 2 | |
| High-Temperature Storage Test | / | IEC60068-2-2, Tu5, 100024 hours | / | No visible damage, R/R5% | |
| Steady Damp Heat Test | / | IEC60068-2-78, 402, 92~95%RH, 100024 hours | / | No visible damage, R/R3% | |
| Rapid Temperature Change Test | / | IEC60068-2-14 | / | R/R3% | |
| Maximum Power Dissipation Test | / | IEC60539-1-4.26.3, 255, Pmax, 100024 hours | / | No visible damage, R/R5% | |
| Model: MF51B-103F3950 | Dimensions (mm) | D | H | L | d |
| MF51-B | / | 1.60.2 | 3.20.5 | 652.5 | 0.250.02 |
Resistance-Temperature Characteristic Table (Appendix 1)
R25: 10K, Accuracy: 1%, B25/50: 3950K, Accuracy: 1% (P390-7A)
| Temperature () | Resistance (K) | Resistance Accuracy (%) | Temperature Accuracy () |
|---|---|---|---|
| -40 | 302.800 | 1% | 0.671 |
| 25 | 10.000 | 1% | 0.225 |
| 150 | 0.175 | 1% | -2.794 |
| 250 | 0.029 | 1% | -4.474 |
Resistance Tolerance Curve (Appendix 2)
This section refers to a Resistance Tolerance Curve Diagram, which is not provided in detail here but indicates how resistance varies with temperature and its associated tolerance.
Usage Precautions
- Application: Temperature measurement and control.
- Avoid excessive current that can cause self-heating and measurement errors.
- When soldering, maintain a distance of at least 2mm from the glass bulb. Soldering temperature should be below 360, with a duration of less than 3 seconds.
- If bending lead wires, ensure the bend point is at least 2mm from the glass bulb to prevent damage.
- Storage Temperature: -10 ~ 40.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases or direct sunlight.
- Reseal packaging after opening. Shelf life is 1 year; re-inspection is recommended for products exceeding this period.
- When using heat shrink tubing, avoid hot air blowers. Recommended method: place product with heat shrink tubing in a constant temperature oven at 110 for 10-12 minutes.
1912111437_Nanjing-Shiheng-Elec-MF51B-103F3950_C394030.pdf
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