Industrial surge current suppression solution Nanjing Shiheng Elec MF73T-1 5/14 high power NTC thermistor
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Product Description
Product Overview
The MF73T-1 is a high-power NTC thermistor manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. Designed for surge current suppression, this thermistor offers reliable performance across a wide operating temperature range of -40 to 200. It is suitable for applications requiring protection against inrush currents, with a maximum steady-state current of 14A and a maximum allowable capacitance of 240Vac/1500F.
Product Attributes
- Brand: Shiheng
- Product Type: High-power NTC Thermistor
- Model Series: MF73T-1
- Encapsulation Material: Black Silicone Resin
- Lead Wire Material: Tin-plated Copper Wire
- Origin: Nanjing, China
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, TUV Certification, Jiangsu High-tech Product Certification.
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, in air | 5 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 3000 10% |
| Maximum Steady-State Current | I max | - | A | 14 |
| Maximum Allowable Capacitance | CT | - | F | 1500 (at 240Vac) |
| Dissipation Factor | - | mW/ | Approx. 30 | |
| Thermal Time Constant | - | sec | Approx. 130 | |
| Withstand Voltage | - | 500V/AC, 1min | - | No breakdown or flashover |
| Insulation Resistance | - | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | - | - | -40 ~ 200 | |
| Maximum Rated Power | Pmax | - | W | 7 |
| 2. Reliability | ||||
| Lead Strength | - | Tensile force: 101 sec (for 0.5| - | No visible damage, R/R 25% | |
| Solderability | - | Temperature 2455, time 2-3 sec | - | Soldered area 95% |
| Resistance to Soldering Heat | - | Solder pot temperature: 2605, immersion depth 6mm from body, time 101 sec | - | R/R 25% |
| Steady State Damp Heat | - | Temperature: 402, Humidity: 932%, time: 1000 hours | - | R/R 25% |
| Rapid Temperature Change | - | -40 for 30min 25 for 5min 200 for 30min 25 for 5min, repeated 5 times | - | 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 | - | Application of max. allowable capacitance, 1000 cycles (50ms ON, 5 times thermal time constant OFF) | - | R/R 25% |
| 3. Usage Precautions | ||||
| Purpose: Surge current suppression. When soldering with an iron, keep the welding point at least 2mm away from the coating layer, with a temperature below 360 and time less than 3 seconds. Storage temperature: -10 to 40; Storage humidity: 75% RH. Avoid storage in environments with corrosive gases and direct sunlight. Reseal after opening the package. Shelf life: 1 year. | ||||
| 5. Outline Dimensions (Unit: mm) | ||||
| D | L | F | T | d |
| Max 29 | Min 25 | 10.0 1 | Max 8.0 | 1.0 0.05 |
| 6. Product Model Description | ||||
| MF73T-1-5/14: Shiheng Brand MF73T-1: High-power NTC Thermistor 5: Zero-power resistance at 25 is 5 14: Maximum steady-state current is 14A | ||||
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