Product Overview
The MF58 Series Glass Encapsulated Temperature Measuring NTC Thermistor from Nanjing Shiheng Electronics Technology Co., Ltd. is designed for temperature measurement and control applications. These thermistors offer precise resistance-temperature characteristics, making them suitable for various industrial and electronic uses where accurate temperature sensing is critical. The product features a robust glass encapsulation for durability and reliable performance across a wide operating temperature range.
Product Attributes
- Brand: Shiheng ()
- Product Name: MF58 Glass Encapsulated Temperature Measuring NTC Thermistor
- Origin: China (Nanjing)
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROHS, CQC, UL 1434 (File # E240991)
- Model Series: MF58
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.05, Test Power 0.1mW | K | 5K5% |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb), Tb=500.05 | K | 34701% |
| Dissipation Factor | In still air | mW/ | 2 | |
| Time Constant | In still air | sec | 20 | |
| Withstand Voltage | / | 1500V/AC, 1min | / | No breakdown or arcing |
| Insulation Resistance | / | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -55~250 | |
| Max Rated Power | Pmax | / | mW | 50 |
| Resistance-Temperature Characteristic | / | / | / | See Appendix 1 |
| Resistance Tolerance | / | / | / | See Appendix 2 |
| Lead Strength | / | Pull force: 101 N, Time: 101 sec | / | No visible damage; R25 R/R2% |
| Solderability | / | Temperature 2455, Time 2-3 sec | / | Tinning area 95% |
| Resistance to Soldering Heat | / | Solder pot temperature: 2605, Immersion depth 6mm from resistor body, Time 51 sec | / | R25 R/R2% |
| Steady State Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R25 R/R2% |
| Rapid Temperature Change | / | -55 30min 25 5min 250 30min 25 5min, 5 cycles | / | R25 R/R2% |
| High Temperature Storage | / | Temperature: 2505, Time: 1000 hours | / | R25 R/R2% |
| Low Temperature Storage | / | Temperature: -555, Time: 1000 hours | / | R25 R/R2% |
| Model Description: MF58 502 J 3470 | ||||
| MF58 | Glass encapsulated temperature measuring NTC thermistor | |||
| 502 | Zero-power resistance at 25 is 5K | |||
| J | Resistance tolerance code (J-5%) | |||
| 3470 | B25/50 value is 3470K |
Usage Precautions
- Application: Temperature measurement and control.
- Avoid current flowing through the thermistor chip causing self-heating and measurement errors.
- When soldering with an iron, the soldering point should be at least 2mm away from the glass shell end. Soldering temperature should be below 360, and soldering time less than 3 seconds.
- If the lead wire is bent, the bending point should be more than 2mm away from the glass shell end to prevent damage to the glass shell.
- Storage Temperature: -10 to 40.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases and direct sunlight.
- Reseal packaging after opening for storage.
Dimensions
(Dimensions are provided in the original document but not in a structured table format for extraction. Please refer to the original document for detailed dimensional drawings.)
Appendices
Appendix 1: Resistance-Temperature Characteristic Table (Details provided for R25=5K, B25/50=3470K, B25/85=3530K with varying temperatures and corresponding resistance values, resistance tolerance, and temperature tolerance.)
Appendix 2: Resistance Tolerance Curve Diagram (Indicates resistance tolerance characteristics.)
1810161324_Nanjing-Shiheng-Elec-MF58-502J3470_C123386.pdf
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