Product Overview
The MF58 series glass-encapsulated NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for temperature measurement and control applications. These components offer reliable performance with a wide operating temperature range of -55C to 195C. They are suitable for various industrial and electronic applications where accurate temperature sensing is critical.
Product Attributes
- Brand: Shiheng
- Origin: Nanjing, China
- Product Type: Glass-encapsulated NTC Thermistor
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROHS, CQC, Jiangsu High-tech Product, UL 1434 (File # E240991)
Technical Specifications
Model: MF58-503H3950
Model Description:
- MF58: Glass-encapsulated NTC Thermistor
- 503: 25C Zero-power Resistance Value 50K
- H: Resistance Tolerance Code (3%)
- 3950: B25/50 Value 3950K
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power Resistance at 25C | R25 | Ta=250.05C, Test Power 0.1mW | K | 50K3% |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb), Tb=500.05 | K | 39501% |
| Dissipation Factor | Still air | mW/ | 2 | |
| Time Constant | Still air | sec | 20 | |
| Dielectric Strength | / | / | / | 1500V/AC, 1min, No breakdown or arcing |
| Insulation Resistance | / | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -55 ~ 195 | |
| Maximum Rated Power | Pmax | / | mW | 50 |
| Lead Strength | / | Pull force: 101 N, Time: 101 sec | / | No visible damage, 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 | / | R/R2% |
| Steady State Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R/R2% |
| Rapid Temperature Change | / | -55 30min 25 5min 195 30min 25 5min, 5 cycles | / | R/R2% |
| High Temperature Storage | / | Temperature: 1955, Time: 1000 hours | / | R/R2% |
| Low Temperature Storage | / | Temperature: -555, Time: 1000 hours | / | R/R2% |
Usage Precautions
- Purpose: Temperature measurement and control.
- Avoid self-heating due to current flow, which can cause measurement errors.
- When soldering with a soldering iron, the welding point should be at least 2mm away from the glass shell. Soldering temperature should be below 360C, 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 to prevent damage.
- Storage Temperature: -10C to 40C.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases or direct sunlight.
- Reseal and store properly after opening the package.
Dimensions
(Unit: mm)
| No. | Name | Material/Specification | Quantity | Remarks |
|---|---|---|---|---|
| 1 | Component | NTC Thermistor | 1 | |
| 2 | Shell | Glass | 1 | |
| 3 | Lead Wire | 0.50.05 Tinned Steel Wire | 2 |
Contact Information
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, 211121, China
Tel: 025-52121868
Fax: 025-52122373
Email: sales@shiheng.com.cn
Website: http://www.shiheng.com.cn
1810161311_Nanjing-Shiheng-Elec-MF58-503H3950_C123397.pdf
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