Nanjing Shiheng Elec MF52A103F3435 A1 Bead Type NTC Thermistor with Wide Operating Temperature Range
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Product Description
Product Overview
The MF52 series from Nanjing Shiheng Electronics is a range of bead-type, temperature-measuring NTC thermistors. Designed for temperature measurement and control, these components offer precise resistance-temperature characteristics and reliable performance across a wide operating temperature range of -55 to 125. They are suitable for applications where accurate temperature sensing is critical, with a maximum rated power of 50mW. The product is manufactured by Nanjing Shiheng Electronics Technology Co., Ltd., located in Nanjing, China.
Product Attributes
- Brand: Shiheng
- Origin: Nanjing, China
- Product Type: Bead-type NTC Thermistor
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, CQC, Jiangsu High-tech Product, UL 1434 (File # E240991)
- Environmental Compliance: ROHS
Technical Specifications
| Project | Symbol | Test Conditions | Unit | Performance Requirements |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.05, Test Power 0.1mW | K | 10K1% |
| B Value | B25/85 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb), Tb=850.01 | K | 34351% |
| Dissipation Factor | In still air | mW/ | 2 | |
| Time Constant | In still air | sec | 7 | |
| Insulation Resistance | / | 100V/DC, 1min | M | 100 |
| Operating Temperature Range | / | / | -55125 | |
| Maximum Rated Power | Pmax | / | mW | 50 |
| Resistance-Temperature Characteristic | / | / | / | See Appendix 1 |
| Resistance Tolerance | / | / | / | See Appendix 2 |
| Lead Strength | / | Fix the resistor end, Pull: 51 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% |
| Temperature Cycling | / | -55 30min25 5min125 30min25 5min, Repeat 5 times | / | R25 R/R2% |
| High Temperature Storage | / | Temperature: 1255, Time: 1000 hours | / | R25 R/R2% |
| Low Temperature Storage | / | Temperature: -55, Time: 1000 hours | / | R25 R/R2% |
| Product Model Description | MF52 | A1 | 103 | F | 3435 |
|---|---|---|---|---|---|
| Meaning | Bead-type precision NTC thermistor | Lead wire is tinned copper-clad steel wire | Zero-power resistance at 25 is 10K | Resistance tolerance code (F-1%) | B25/85 value is 3435K |
Usage Precautions
- Application: Temperature measurement and control.
- Avoid current flow through the thermistor chip that causes self-heating and measurement errors.
- When soldering with a soldering iron, the welding point should be at least 2mm away from the coating layer. The welding temperature should be below 300, and the welding time should be less than 3 seconds.
- Storage Temperature: -10 to 40.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases and direct sunlight.
- Reseal and store after opening the package.
Physical Dimensions (Unit: mm)
| No. | Name | Material Specification | Quantity | Remarks |
|---|---|---|---|---|
| 1 | Component | NTC Thermistor (Chip) | 1 | / |
| 2 | Encapsulant | Modified resin | 1 | Black |
| 3 | Lead Wire | Tinned copper-clad steel wire | 2 | Silver |
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