Power type NTC thermistor Nanjing Shiheng Elec MF72 8D11 designed for surge current protection solutions
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Product Description
Product Overview
The Nanjing Shiheng Electronics Technology Co., Ltd. MF72 Series is a power type NTC thermistor designed for surge current suppression. This product offers reliable performance with a wide operating temperature range and is manufactured with high-quality materials. It is suitable for applications requiring effective inrush current limiting.
Product Attributes
- Brand: Shiheng ()
- Product Type: Power Type NTC Thermistor
- Model Series: MF72
- Encapsulation Material: Black Silicone Resin
- Lead Material: Tinned Copper Wire
- Origin: Nanjing, China
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification (CQC04001010556), UL Certification (E241319), Jiangsu Province High-tech Product Certification (070115G0254N), TUV Certification (R50245892)
Technical Specifications
| Project | Symbol | Test Conditions | Unit | Performance Requirement | |||||
|---|---|---|---|---|---|---|---|---|---|
| 1. Electrical Performance | |||||||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test Power 0.1mW, Tested in air | 8 20% | ||||||
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 2800 10% | |||||
| Maximum Steady Current | I max | / | A | 3 | |||||
| Maximum Allowable Capacitance | CT | 240Vac | F | 220 | |||||
| Dissipation Factor | / | mW/ | 14 | ||||||
| Thermal Time Constant | / | sec | 47 | ||||||
| Withstand Voltage | / | 500V/AC, 1min | / | No breakdown or arcing | |||||
| Insulation Resistance | / | 500V/DC, 1min | M | 500 | |||||
| Operating Temperature Range | / | / | -40 ~ 170 | ||||||
| Maximum Rated Power | Pmax | / | W | 3 | |||||
| Resistance-Temperature Curve | / | / | / | See Figure 1 | |||||
| Volt-Ampere Curve | / | / | / | See Figure 2 | |||||
| 2. Reliability | |||||||||
| Lead Strength | / | Tension: 101 sec, for wire diameter 0.5| / | No visible damage, R/R25% | | |||||
| Solderability | / | Temperature 2455, Time 2-3 sec | / | Tinning coverage 95% | |||||
| Resistance to Soldering Heat | / | Solder pot temperature: 2605, immersion depth 6mm from the body, time 101 sec | / | R/R25% | |||||
| Steady State Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 1000 hours | / | R/R25% | |||||
| Temperature Rapid Change | / | -40 30min 25 5min 170 30min 25 5min, repeated 5 times | / | R/R25% | |||||
| High Temperature Storage | / | Temperature: 1705, Time: 1000 hours | / | R/R25% | |||||
| Max Steady Current Durability | / | Continuous application of maximum steady current at room temperature for 100024h | / | R/R25% | |||||
| Max Capacitance Endurance | / | Apply maximum allowable capacitance, intermittently close for 50ms, open for 5 times the thermal time constant per cycle, apply 1000 cycles. | / | R/R25% | |||||
| 3. Usage Precautions | |||||||||
| Product Purpose | / | Inrush current suppression | / | / | |||||
| Soldering Iron Welding | / | Welding point at least 2mm from the coating layer, welding temperature below 360, welding time | / | / | |||||
| Storage Temperature | / | -1040 | / | / | |||||
| Storage Humidity | / | 75% RH | / | / | |||||
| Storage Environment | / | Avoid storage in environments with corrosive gases and direct sunlight | / | / | |||||
| Packaging | / | Reseal and store after opening the package | / | / | |||||
| Storage Period | / | 1 year | / | / | |||||
| 5. Outline Dimensions (Unit: mm) | |||||||||
| Model | D | L1 | L2 | F1 | F2 | T | d | Max | Min |
| MF72 | Max 13.0 | 17 2 | 7.5 1 | 5 1.5 | Max 5.5 | 0.8 0.05 | / | / | |
| 6. Product Model Description | |||||||||
| MF72 | |||||||||
| Brand | Shiheng | / | / | ||||||
| Series | MF72: Power Type NTC Thermistor | / | / | ||||||
| Resistance | 8: Zero-power resistance at 25 is 8 | / | / | ||||||
| Diameter | 11: Body diameter D11 | / | / | ||||||
Contact Information:
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, 211121
TEL: 025-52121868
FAX: 025-52122373
Http: //www.shiheng.com.cn
E-MAIL: sales@shiheng.com.cn
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