Product Overview
The MF52 series are bead-type, temperature-measuring NTC thermistors manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. These precision components are designed for temperature measurement and control applications. They feature a high accuracy and a wide operating temperature range of -55 to 125. The thermistors are constructed with a modified resin encapsulation and utilize tinned copper-clad steel leads for reliable connectivity. They are suitable for various industrial and electronic applications requiring accurate temperature sensing.
Product Attributes
- Brand: Nanjing Shiheng Electronics Technology Co., Ltd.
- Origin: China
- Product Type: Bead-type NTC Thermistor
- Encapsulation Material: Modified Resin
- Lead Material: Tinned Copper-Clad Steel Wire
- Lead Color: Silver
- Encapsulation Color: Black
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC, Jiangsu Province High-tech Product
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.05, Test Power 0.1mW | K | 50K1% |
| B Value | 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/R 2% |
| Solderability | / | Temperature 2455, Time 2-3 sec | / | Tinning area 95% |
| Resistance to Soldering Heat | / | Pot temperature: 2605, Immersion depth 6mm from resistor body, Time 51 sec | / | R25 R/R 2% |
| Steady State Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R25 R/R 2% |
| Rapid Temperature Change | / | -55 30min 25 5min 125 30min 25 5min, repeated 5 times | / | R25 R/R 2% |
| High Temperature Storage | / | Temperature: 1255, Time: 1000 hours | / | R25 R/R 2% |
| Low Temperature Storage | / | Temperature: -55, Time: 1000 hours | / | R25 R/R 2% |
Usage Precautions
- Intended Use: Temperature measurement and control.
- Avoid current flow through the thermistor chip that causes self-heating, leading to 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 for storage.
Dimensions
Refer to the attached dimension drawing (drawing not provided in the source text).
Product Model Explanation
MF52 A 503 F 3950 A1
- MF52: Bead-type precision NTC thermistor.
- A: Leads are tinned copper-clad steel wire.
- 503: Zero-power resistance at 25 is 50K.
- F: Resistance tolerance code (F=1%, G=2%, H=3%, J=5%).
- 3950: B25/50 value is 3950K.
- A1: Small head.
1811151641_Nanjing-Shiheng-Elec-MF52A503F3950--A1_C123379.pdf
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