Product Overview
The MF52 series, manufactured by Nanjing Shiheng Electronics Technology Co., Ltd., are bead-type temperature measuring NTC thermistors. These components are designed for temperature measurement and control applications. They feature a compact, bead-like construction and are constructed with modified resin encapsulation and tinned copper-clad steel wires for leads. The series offers precise resistance values and B-values, ensuring reliable performance across a wide operating temperature range of -55 to 125. They are suitable for applications where accurate temperature sensing is critical.
Product Attributes
- Brand: Shiheng
- Origin: Nanjing, China
- Product Type: Bead-type Temperature Measuring 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 | 50K5% |
| 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 | / | Pull force: 51 N, Time: 101 sec | / | No visible damage |
| 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/R2% |
| Steady State Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R25 R/R2% |
| Rapid Change of Temperature | / | -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 A1 503 J 3950 A1
- MF52: Bead-type precision NTC thermistor
- A1: Leads are tinned copper-clad steel wire
- 503: Zero-power resistance at 25 is 50K
- J: Resistance tolerance code (J = 5%)
- 3950: B25/50 value is 3950K
- A1: Small head
Usage Precautions
- Primary Use: Temperature measurement and control.
- Measurement Accuracy: Avoid self-heating of the thermistor due to current flow, which can cause measurement errors.
- Soldering: 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 should be less than 3 seconds.
- Storage Conditions: Storage temperature: -10 to 40; Storage humidity: 75% RH.
- Environmental Avoidance: Avoid storing in environments with corrosive gases or direct sunlight.
- Packaging: Reseal packaging after opening.
External Dimensions (Unit: mm)
(No specific dimensions provided in the text, only a placeholder for a table.)
Contact Information
- Tel: 025-52121868
- Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City
- Fax: 025-52122373
- Email: sales@shiheng.com.cn
- Postal Code: 211121
- Website: Http://www.shiheng.com.cn
1810161324_Nanjing-Shiheng-Elec-MF52A503J3950--A1_C123381.pdf
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