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Specifications
Resistance @ 25℃:
5Ω
Power(Watts):
5W
Pitch:
10mm
Operating Temperature:
-40℃~+200℃
Tolerance:
±20%
B Constant (25℃/100℃):
-
Steady State Current (Max):
12A
Thermal Time Constant:
1.83min
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
3000K
B Constant Tolerance:
±10%
Mfr. Part #:
MF73T-1 5/12
Package:
Through Hole,P=10mm
Key Attributes
Model Number:
MF73T-1 5/12
Product Description
Product Overview
The MF73T-1 is a high-power NTC thermistor manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. Designed to suppress inrush current, this thermistor offers reliable performance across a wide operating temperature range. It is suitable for applications requiring protection against current surges.
Product Attributes
- Brand: Shiheng ()
- Product Type: High-power NTC Thermistor
- Model Series: MF73T-1
- Encapsulation Material: Black Silicone Resin
- Lead Material: Tinned Copper Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, Jiangsu Province High-tech Product Certification, TUV Certification
- Origin: Nanjing, China
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 | 5 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 3000 10% |
| Maximum Steady Current | I max | A | 12 | |
| Maximum Allowable Capacitance | CT | 240Vac | F | 1200 |
| Dissipation Factor | mW/ | Approx. 28 | ||
| Thermal Time Constant | sec | Approx. 110 | ||
| 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 | |
| Lead Strength (Tensile) | 101 sec | N | 0.5 | |
| Solderability | Temperature 2455, Time 2-3 sec | 95% tinning area | ||
| Resistance to Soldering Heat | Solder pot temperature: 2605, Immersion depth 6mm from body, Time 101 sec | R/R 25% | ||
| Steady Humidity Heat | Temperature: 402, Humidity: 932%, Time: 1000 hours | R/R 25% | ||
| Rapid Temperature Change | -40 30min25 5min200 30min 25 5min, 5 cycles | R/R 25% | ||
| High Temperature Storage | Temperature: 2005, Time: 1000 hours | R/R 25% | ||
| Max Steady Current Endurance | Continuous application of max steady current at room temperature, 100024h | R/R 25% | ||
| Max Capacitance Endurance | Apply max allowable capacitance, intermittently close 50ms, open for 5 times thermal time constant per cycle, 1000 cycles | R/R 25% | ||
| Model: MF73T-1-5/12 | ||||
| Model Breakdown | Shiheng Brand, MF73T-1: High-power NTC Thermistor, 5: Zero-power resistance at 25 is 5, 12: Maximum steady current is 12A | |||
| External Dimensions (Unit: mm) | D | Max 22.5 | mm | |
| L | Min 25 | mm | ||
| F | 10.0 1 | mm | ||
| T | Max 7.0 | mm | ||
| d | 1.0 0.05 | mm |
Usage Precautions
- Product Use: Inrush current suppression.
- Soldering: When using a soldering iron, keep the soldering point at least 2mm away from the coating layer. Soldering temperature should be below 360, and soldering time less than 3 seconds.
- Storage Temperature: -10 ~ 40.
- Storage Humidity: 75% RH.
- Storage Environment: Avoid storage in environments with corrosive gases and direct sunlight.
- Packaging: After opening the package, reseal for storage.
- Shelf Life: 1 year.
1810161311_Nanjing-Shiheng-Elec-MF73T-1-5-12_C123335.pdf
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