Product Overview
The MF72 series power type NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for surge current suppression. This product specification outlines the structural dimensions, product performance, testing conditions, and usage requirements for the MF72 series. It is crucial to confirm this specification. For any discrepancies or changes in usage or application methods, please contact Nanjing Shiheng Electronics Technology Co., Ltd. directly.
Product Attributes
- Brand: Shiheng ()
- Product Type: Power Type NTC Thermistor
- Origin: Nanjing, China
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, Jiangsu Province High-tech Product Certification, TUV Certification, UL Certification (E241319)
- Encapsulation Material: Black Silicone Resin
- Lead Material: Tinned Copper Wire
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| 1. Electrical Characteristics | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test power 0.1mW, Tested in air | 4720% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 320010% |
| Maximum Steady Current | I max | / | A | 3 |
| Maximum Allowable Capacitance | CT | 240Vac | F | 330 |
| Dissipation Factor | / | mW/ | 21 | |
| Thermal Time Constant | / | sec | 86 | |
| Withstand Voltage | / | 500V/AC, 1min | / | No breakdown or arcing |
| Insulation Resistance | / | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -40 ~ 200 | |
| Maximum Rated Power | Pmax | / | W | 5 |
| Resistance-Temperature Curve | / | / | / | See Figure 1 |
| Volt-Ampere Curve | / | / | / | See Figure 2 |
| 2. Reliability | ||||
| Lead Strength | / | Pulling Force: 10s for 0.5| / | / | |
| Solderability | / | 2455, 2-3s. Soldered area 95% | / | / |
| Resistance to Soldering Heat | / | 2605, immersion depth 6mm from body, 101s. R/R25% | / | / |
| Steady State Damp Heat | / | 402, 932% RH, 1000 hours. R/R25% | / | / |
| Temperature Cycling | / | -40 30min 25 5min 200 30min 25 5min, 5 cycles. R/R25% | / | / |
| High Temperature Storage | / | 2005, 1000 hours. R/R25% | / | / |
| Maximum Steady Current Endurance | / | Continuous application of maximum steady current at room temperature for 100024h. R/R25% | / | / |
| Maximum Capacitance Endurance | / | Apply maximum allowable capacitance, intermittently close 50ms, open 5 times thermal time constant for a cycle, apply 1000 cycles. R/R25% | / | / |
| 3. Usage Precautions | ||||
| Product Purpose | / | Surge current suppression | / | / |
| Soldering Iron Welding | / | Distance from coating layer 2mm, temperature <360, time <3s | / | / |
| Storage Temperature | / | -1040 | / | / |
| Storage Humidity | / | 75% RH | / | / |
| Storage Environment | / | Avoid corrosive gases and direct sunlight | / | / |
| Packaging | / | Reseal after opening | / | / |
| Shelf Life | / | 1 year | / | / |
| 5. Outline Dimensions (Unit: mm) | ||||
| D | / | Max 17.5, Min 17 | mm | / |
| L1 | / | 5 2 | mm | / |
| L2 | / | 7.5 1 | mm | / |
| F1 | / | 5 1.5 | mm | / |
| F2 | / | Max 6.0 | mm | / |
| T | / | / | mm | / |
| d | / | 0.8 0.05 | mm | / |
| 6. Product Model Description | ||||
| MF72-47D15 | / | MF72: Power Type NTC Thermistor; 47: Zero-power resistance at 25 is 47; D15: Body diameter is 15mm. | / | / |
Contact Information:
Tel: 025-52121868
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, 211121
Fax: 025-52122373
Email: sales@shiheng.com.cn
Website: Http://www.shiheng.com.cn
1810261611_Nanjing-Shiheng-Elec-MF72-47D15_C72686.pdf
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