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Specifications
Resistance @ 25℃:
5Ω
Power(Watts):
500mW
Pitch:
2.5mm
Operating Temperature:
-40℃~+130℃
Tolerance:
±20%
B Constant (25℃/100℃):
-
Steady State Current (Max):
1A
Thermal Time Constant:
20s
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
2500K
B Constant Tolerance:
±10%
Mfr. Part #:
MF72 5D5
Package:
Through Hole,P=2.5mm
Key Attributes
Model Number:
MF72 5D5
Product Description
Product Overview
The MF72 Series Power Type NTC Thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed to suppress inrush current. This product offers reliable performance with a wide operating temperature range and is manufactured under stringent quality management systems. Key applications include current limiting in power supplies and other electronic circuits where surge protection is critical.
Product Attributes
- Brand: Shiheng
- Product Name: MF72 Power Type NTC Thermistor
- Origin: Nanjing, China
- Encapsulation Material: Black Phenolic Resin
- Lead Material: Tinned Copper Clad Steel Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, Jiangsu Province High-tech Product, TUV
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| 1. Electrical Characteristics | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test Power 0.1mW, Tested in air | 5 20% | |
| B value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 2500 10% |
| Max steady-state current | I max | A | 0.95 | |
| Max allowable capacitance | CT | 240Vac | F | 100 |
| Dissipation factor | mW/ | 6 | ||
| Thermal time constant | sec | 20 | ||
| 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 | 0.5 | |
| Resistance-temperature curve | See Figure 1 | |||
| Volt-ampere curve | See Figure 2 | |||
| 2. Reliability | ||||
| Lead strength | Tension: (Wire diameter) Tension (N), Time: 101 sec | No visible damage, R/R25% | ||
| Solderability | Temperature 2455, Time 2-3 sec | Soldered 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% | ||
| Temperature rapid change | -40 30min25 5min130 30min25 5min, Repeated 5 times | R/R25% | ||
| High temperature storage | Temperature: 1305, Time: 1000 hours | R/R25% | ||
| Max steady-state current endurance | Continuously apply max steady-state current at room temperature for 50024h | R/R25% | ||
| Max capacitance endurance | Apply max allowable capacitance, intermittently close 50ms, open 5 times thermal time constant is one cycle, apply 1000 cycles to the thermistor. | R/R25% | ||
| 3. Usage Precautions | ||||
| Purpose: Inrush current suppression. Soldering: Distance from coating at welding point 2mm, welding temperature <360, welding time <3sec. Storage temperature: -1040; Storage humidity: 75% RH. Avoid storage in corrosive gas and light environments. Reseal after opening packaging. Shelf life: 1 year. | ||||
| 4. Derating Curve | ||||
| (Refer to attached figures for detailed curves) | ||||
| 5. Outline Dimensions (Unit: mm) | ||||
| D | L | F | T | d |
| Max 7.0 | Min 25 | 2.51 | Max 5.0 | 0.450.05 |
| 6. Product Model Description | ||||
| NTC 5D-5 NTC: Power Type NTC Thermistor 5: Zero-power resistance at 25 is 5 5: Body diameter D is 5 | ||||
| Model: MF72-5D5 (NTC 5D-5) | ||||
1810161329_Nanjing-Shiheng-Elec-MF72-5D5_C122760.pdf
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