Surge Current Limiting Nanjing Shiheng Elec MF73T-1 1/20 High Power NTC Thermistor with Silicone Resin
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Product Description
Product Overview
The MF73T-1 series NTC thermistors, manufactured by Nanjing Shiheng Electronics Technology Co., Ltd., are high-power type components designed for surge current suppression. These thermistors offer reliable performance across a wide operating temperature range and are suitable for various industrial applications requiring effective inrush current limiting.
Product Attributes
- Brand: Shiheng ()
- Product Name: High-Power Type NTC Thermistor
- Model Series: MF73T-1
- Encapsulation Material: Black Silicone Resin
- Lead Wire Material: Tinned Copper Wire
- Origin: Nanjing, China
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, Jiangsu High-tech Product Certification, 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 | 120% | ||
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 260010% | |
| Max. Steady State Current | I max | A | 20 | ||
| Max. Allowable Capacitance | CT | 240Vac | F | 2200 | |
| 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 | ||||
| Max. Rated Power | Pmax | As shown in the figure | W | 7 | |
| 2. Reliability | |||||
| Lead Wire Strength | Tensile Force: 10N (0.5| | No visible damage, R/R25% | | ||
| Solderability | Temperature: 2455, Time: 2-3 sec | 95% tinned area | |||
| Resistance to Soldering Heat | Solder pot temperature: 2605, Immersion depth 6mm from thermistor body, Time: 101 sec | R/R25% | |||
| Damp Heat (Steady State) | Temperature: 402, Humidity: 932%, Time: 1000 hours | R/R25% | |||
| Rapid Temperature Change | -40 for 30min 25 for 5min 200 for 30min 25 for 5min, repeated 5 times | R/R25% | |||
| High Temperature Storage | Temperature: 2005, Time: 1000 hours | R/R25% | |||
| Max. Steady State Current Endurance | Continuous application of max. steady state current at room temperature for 100024h | R/R25% | |||
| Max. Capacitance Endurance | Apply max. allowable capacitance, intermittently close for 50ms and open for 5 times the thermal time constant, apply 1000 cycles to the thermistor. | R/R25% | |||
| 3. Usage Precautions | |||||
| Product Purpose | Surge current suppression | ||||
| Soldering Iron Welding | Welding point at least 2mm from coating layer, welding temperature below 360, welding time | ||||
| Storage Temperature | -1040 | ||||
| Storage Humidity | 75% RH | ||||
| Storage Environment | Avoid storage in environments with corrosive gases and direct sunlight | ||||
| Repackaging | Reseal after opening package | ||||
| Storage Period | 1 year | ||||
| 5. Outline Dimensions (Unit: mm) | |||||
| D | L | F | T | d | |
| Max 29 | Min 25 | 10.01 | Max 8.0 | 1.00.05 | |
| 6. Product Model Description | |||||
| MF73T-1 / 1 / 20 | |||||
| Description | : Shiheng Brand | : MF73T-1: High-power type NTC thermistor | : 1: Zero-power resistance at 25 is 1 | : 20: Max. steady state current is 20A | |
| Model Example: MF73T-1-1/20 | |||||
| Contact Information: | |||||
| Company: | Nanjing Shiheng Electronics Technology Co., Ltd. | ||||
| Address: | No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, China | ||||
| Postal Code: | 211121 | ||||
| Tel: | 025-52121868 | ||||
| Fax: | 025-52122373 | ||||
| E-MAIL: | sales@shiheng.com.cn | ||||
| Website: | Http://www.shiheng.com.cn | ||||
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