Product Overview
The MF52 series of bead-type, temperature-sensing NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for temperature measurement and control applications. These precise NTC thermistors feature a compact bead construction and are available with tinned copper-clad steel leads. They offer a wide operating temperature range from -55 to 125 and are manufactured to high-quality standards, including ISO9001, ISO/TS16949, and ISO14001 certifications, along with UL 1434 approval. The product is suitable for various industrial and electronic applications requiring accurate temperature monitoring.
Product Attributes
- Brand: Shiheng ()
- Origin: China
- Product Type: Bead-type, Temperature-Sensing NTC Thermistor
- Lead Material: Tinned Copper-Clad Steel (A1)
- Encapsulation: Modified Resin (Black)
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROHS, CQC, Jiangsu High-tech Product, UL 1434 (File # E240991)
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power Resistance at 25 | R25 | Ta=250.05, Test Power 0.1mW | K | 100K3% |
| B Value (25/50) | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb), Tb=500.01 | K | 39501% |
| Dissipation Factor | Still air | mW/ | 2 | |
| Time Constant | Still air | sec | 7 | |
| Insulation Resistance | / | 100V/DC, 1min | M | 100 |
| Operating Temperature Range | / | / | -55125 | |
| Maximum Rated Power | Pmax | / | mW | 50 |
| Lead Strength | / | Pulling force: 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% |
| Rapid Temperature Change | / | -55 30min 25 5min 125 30min 25 5min, 5 cycles | / | 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% |
| Model | Description |
|---|---|
| MF52 A 104 H 3950 (A1) | Bead-type Precision NTC Thermistor |
| MF52 | Bead-type Precision NTC Thermistor |
| A1 | Leads are tinned copper-clad steel wire |
| 104 | Zero-power resistance at 25: 100K |
| H | Resistance Tolerance Code: 3% |
| 3950 | B25/50 Value: 3950K |
| A1 (in model number) | Small head |
Usage Precautions
- Intended Use: Temperature measurement and control.
- Avoid current flow through the thermistor chip that causes self-heating and measurement errors.
- When soldering with an iron, maintain a distance of at least 2mm from the coating layer. Soldering temperature should be below 300, and soldering time less than 3 seconds.
- Storage Temperature: -10 to 40.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases or direct sunlight.
- Reseal packaging after opening.
1810161311_Nanjing-Shiheng-Elec-MF52A104H3950--A1_C123382.pdf
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