Product Overview
The MF72 Series Power Type NTC Thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for surge current suppression. These components feature a power type NTC thermistor construction, offering reliable performance in various electrical applications. The product specifications detail electrical characteristics, reliability tests, usage precautions, and dimensional information, ensuring suitability for industrial and electronic system integration.
Product Attributes
- Brand: Shiheng
- Product Line: MF72 Power Type NTC Thermistor
- Origin: Nanjing, China
- Encapsulation Material: Black Phenolic Resin
- Lead Material: Tinned Copper Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, Jiangsu High-Tech Product Certification, TUV Certification
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| 1. Electrical Performance | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test power 0.1mW, Tested in air | 1020% | |
| B value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 320010% |
| Maximum steady-state current | I max | / | A | 7 |
| Maximum permissible capacitance | CT | 240Vac | F | 820 |
| Dissipation factor | / | mW/ | 32 | |
| Thermal time constant | / | sec | 127 | |
| Withstand voltage | / | 700V/AC, 1min | / | No breakdown or arcing |
| Insulation resistance | / | 500V/DC, 1min | M | 500 |
| Operating temperature range | / | / | -40 ~ 160 | |
| Maximum rated power | Pmax | / | W | 7.5 |
| Resistance-temperature curve | / | / | / | See Figure 1 |
| Volt-ampere curve | / | / | / | See Figure 2 |
| 2. Reliability | ||||
| Lead strength | / | Tensile force: 101 sec | N | 0.5<d0.8: 10; 0.8<d1.25: 20 |
| Solderability | / | Temperature 2455, Time 2-3 sec | / | Wetted area 95% |
| Resistance to soldering heat | / | Solder pot temperature: 2605, Immersion depth 6mm from resistor body, Time 101 sec | / | R/R25% |
| Steady-state damp heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R/R25% |
| Rapid temperature change | / | -40 30min25 5min160 30min25 5min, Repeated 5 times | / | R/R25% |
| High-temperature storage | / | Temperature: 1605, Time: 1000 hours | / | R/R25% |
| Maximum steady-state current endurance | / | Continuously apply maximum steady-state current at room temperature for 50024h | / | R/R25% |
| Maximum capacitance endurance | / | Apply maximum permissible capacitance, intermittently close 50ms, open 5 times the thermal time constant for one cycle, apply 1000 cycles to the thermistor. | / | R/R25% |
| 3. Usage Precautions | ||||
| Product purpose | / | Surge current suppression | / | / |
| Soldering iron welding | / | Welding point at least 2mm from coating layer, welding temperature below 360, welding time <3 seconds | / | / |
| Storage temperature | / | -1040 | / | / |
| Storage humidity | / | 75% RH | / | / |
| Storage environment | / | Avoid storage in environments with corrosive gases and direct sunlight | / | / |
| Packaging | / | Re-seal after opening | / | / |
| Shelf life | / | 1 year | / | / |
| 4. Derating Curve | ||||
| / | / | / | / | See attached Figure 2 |
| 5. Outline Dimensions (Unit: mm) | ||||
| D | / | / | mm | Max 27.5, Min 25 |
| L | / | / | mm | 101 |
| F | / | / | mm | Max 8.0 |
| T | / | / | mm | 1.00.05 |
| 6. Product Model Description | ||||
| MF72 | 10 | D | 25 | Shiheng Brand MF72: Power Type NTC Thermistor 10: Zero-power resistance at 25 is 10 25: Body diameter D25 |
| 7. Certifications | ||||
| Quality Management System | / | ISO9001:2008 (01115Q20270R5M) | / | ISO/TS16949:2009 (0192416) |
| Environmental Management System | / | ISO14001:2004 (01113E20060R2M) | / | / |
| Environmental Test Report | / | RoHS | / | / |
| Safety Certification | / | CQC (CQC04001010556) | / | / |
| High-Tech Product Certification | / | Jiangsu Province (120115G0178N) | / | / |
| TUV Certification | / | (R50245892) | / | / |
Contact Information:
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, China
Postal Code: 211121
Tel: 025-52121868
Fax: 025-52122373
Http: //www.shiheng.com.cn
E-MAIL: sales@shiheng.com.cn
1810161311_Nanjing-Shiheng-Elec-MF72-10D25_C122782.pdf
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