Power type NTC thermistor surge current suppression solution Nanjing Shiheng Elec MF72 22D11 component
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Product Description
Product Overview
The MF72 Series Power Type NTC Thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for surge current suppression. These components offer reliable performance with a wide operating temperature range and are manufactured under stringent quality management systems. They are suitable for applications requiring protection against inrush current.
Product Attributes
- Brand: Shiheng ()
- Product Type: Power Type NTC Thermistor
- Origin: Nanjing, China
- Encapsulation Material: Black Silicone Resin
- Lead Wire Material: Tinned Copper Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, Jiangsu High-tech Product Certification, TUV, UL (E241319)
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-Power Resistance at 25 | R25 | Ta=250.5, Test Power 0.1mW, Tested in Air | 22 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 3000 10% |
| Maximum Steady Current | I max | A | 2 | |
| Maximum Allowable Capacitance | CT | 240Vac | F | 220 |
| Dissipation Factor | mW/ | 15 | ||
| Thermal Time Constant | sec | 52 | ||
| Withstand Voltage | 500V/AC, 1min | No breakdown or flashover | ||
| 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 | |||
| Reliability Tests | ||||
| Lead Strength | Pull Force: 0.5| | No visible damage, R/R 25% | | |
| Solderability | Temperature 2455, Time 2-3 sec | Wetted Area 95% | ||
| Resistance to Soldering Heat | Solder Pot Temp: 2605, Immersion Depth 6mm from resistor body, Time 101 sec | R/R 25% | ||
| Steady State Damp Heat | Temp: 402, Humidity: 932%, Time: 1000 hours | R/R 25% | ||
| Temperature Cycling | -40 30min 25 5min 170 30min 25 5min, 5 cycles | R/R 25% | ||
| High Temperature Storage | Temp: 1705, Time: 1000 hours | R/R 25% | ||
| Max Steady Current Endurance | Continuous application of max steady current at room temp for 100024h | R/R 25% | ||
| Max Capacitance Endurance | Apply max allowable capacitance, intermittent close 50ms, open 5 times thermal time constant per cycle, 1000 cycles | R/R 25% | ||
| Dimensions (Unit: mm) | ||||
| Model | D | L | L1 | L2 |
| MF72-22D11 | Max 13.0 | Min 17 | 8 2 | 7.5 1 |
| F1 | F2 | T | d | |
| MF72-22D11 | 4 1.5 | Max 5.5 | 0.8 0.05 | |
| Usage Precautions | ||||
| Purpose: Surge current suppression. Soldering: distance from coating 2mm, temp | ||||
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