Changsha Purple Horn E-Commerce Co., Ltd.
| Resistance @ 25℃ | 22Ω |
| Power(Watts) | 1W |
| Pitch | 5mm |
| Operating Temperature | -40℃~+130℃ |
| Tolerance | ±20% |
| B Constant (25℃/100℃) | - |
| Steady State Current (Max) | 600mA |
| Thermal Time Constant | 27s |
| B Constant (25℃/85℃) | - |
| B Constant (25℃/75℃) | - |
| B Constant (25℃/50℃) | 2800K |
| B Constant Tolerance | ±10% |
| Description | NTC Thermistor 22Ω Through Hole,P=5mm |
| Mfr. Part # | MF72 22D7 |
| Package | Through Hole,P=5mm |
| Model Number | MF72 22D7 |
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Product Specification
| Resistance @ 25℃ | 22Ω | Power(Watts) | 1W |
| Pitch | 5mm | Operating Temperature | -40℃~+130℃ |
| Tolerance | ±20% | B Constant (25℃/100℃) | - |
| Steady State Current (Max) | 600mA | Thermal Time Constant | 27s |
| B Constant (25℃/85℃) | - | B Constant (25℃/75℃) | - |
| B Constant (25℃/50℃) | 2800K | B Constant Tolerance | ±10% |
| Description | NTC Thermistor 22Ω Through Hole,P=5mm | Mfr. Part # | MF72 22D7 |
| Package | Through Hole,P=5mm | Model Number | MF72 22D7 |
The MF72 series of 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 currents.
| Item | 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 | 2220% | |
| B value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 280010% |
| Max. steady-state current | I max | A | 0.6 | |
| Max. allowable capacitance | CT | 240Vac | F | 68 |
| Dissipation factor | mW/ | 9 | ||
| Thermal time constant | sec | 27 | ||
| Withstand voltage | 500V/AC, 1min | No breakdown or flashover | ||
| Insulation resistance | 500V/DC, 1min | M | 500 | |
| Operating temperature range | -40 ~ 130 | |||
| Max. rated power | Pmax | W | 1 | |
| 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 (No visible damage, R/R25%) | |
| Solderability | Temperature 2455, time 2-3 sec | 95% tinning area | ||
| Resistance to soldering heat | Tin pot temperature: 2605, immersion depth 6mm from body, time 101 sec | R/R25% | ||
| Steady damp heat | Temperature: 402, Humidity: 932%, Time: 500 hours | R/R25% | ||
| Temperature rapid change | -40 30min25 5min130 30min25 5min, 5 cycles | R/R25% | ||
| High temperature storage | Temperature: 1305, Time: 1000 hours | R/R25% | ||
| Max. steady-state current endurance | Continuous application of max. steady-state current at room temperature, 50024h | R/R25% | ||
| Max. capacitance endurance | Apply max. allowable capacitance, intermittently close 50ms, open 5 times thermal time constant per cycle, 1000 cycles applied to thermistor. | R/R25% | ||
| 3. Usage Precautions | ||||
| Product purpose | Surge current suppression | |||
| Soldering iron welding | Welding temperature < 360, welding time < 3 sec, distance from coating 2mm | |||
| Storage temperature | -10 ~ 40 | |||
| Storage humidity | % RH | 75% | ||
| Storage environment | Avoid corrosive gases and direct sunlight | |||
| Packaging | Reseal after opening | |||
| Storage period | 1 year | |||
| 4. Derating Curve | ||||
| See attached figure | ||||
| 5. Outline Dimensions (Unit: mm) | ||||
| D | mm | Max 9 | ||
| L | mm | Min 17 | ||
| L1 | mm | 52 | ||
| L2 | mm | 51 | ||
| F | mm | 1 | ||
| F1 | mm | Max 5 | ||
| F2 | mm | 0.60.05 | ||
| T | mm | Max 9 | ||
| d | mm | Max 5 | ||
| 6. Product Model Description | ||||
| MF72 | Power Type NTC Thermistor | |||
| 22 | Zero-power resistance at 25 is 22 | |||
| D7 | Body diameter is D7 | |||
| 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 | |||
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
300~500
Ecer Certification：
Verified Supplier
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...
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