Surge Current Protection Thermistor Nanjing Shiheng Elec MF73T-1 10/10 High Power NTC with Black Epoxy Resin
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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. It is designed for surge current suppression. This series offers a wide operating temperature range and is available with various resistance values and maximum steady-state currents. The product is manufactured with a black epoxy resin encapsulation and tin-plated copper leads.
Product Attributes
- Brand: Shiheng ()
- Product Type: High-power NTC Thermistor
- Encapsulation Material: Black Epoxy Resin
- Lead Material: Tin-plated Copper Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC Safety Certification, TUV
- Origin: Nanjing, China
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| 1. Electrical Performance | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test power 0.1mW, in air | 10 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 3200 10% |
| Max. Steady Current | I max | A | 10 | |
| Max. Allowable Capacitance | CT | 240Vac | F | 1200 |
| 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 per diagram | W | 7 |
| 2. Reliability | ||||
| Lead Strength | Tensile force: 101 sec (for 0.5| | No visible damage, R/R25% | | |
| Solderability | Temperature 2455, time 2-3 sec | Soldering area 95% | ||
| Resistance to Soldering Heat | Solder pot temp: 2605, immersion depth 6mm from thermistor body, time 101 sec | R/R25% | ||
| Steady Damp Heat | Temperature: 402, Humidity: 932%, time: 1000 hours | R/R25% | ||
| Temperature Cycling | -40 30min 25 5min 200 30min 25 5min, 5 cycles | R/R25% | ||
| High Temperature Storage | Temperature: 2005, time: 1000 hours | R/R25% | ||
| Max. Steady Current Endurance | Continuous application of max. steady current at room temperature, 100024h | R/R25% | ||
| Max. Capacitance Endurance | Apply max. allowable capacitance, intermittently close 50ms, disconnect 5 times thermal time constant for one cycle, apply 1000 cycles. | R/R25% | ||
| 3. Usage Precautions | ||||
| Product Use | Surge current suppression | |||
| Soldering | Soldering point at least 2mm from coating layer, soldering temp | |||
| Storage Temperature | -10 ~ 40 | |||
| Storage Humidity | 75% RH | |||
| Storage Environment | Avoid corrosive gases and direct sunlight | |||
| Packaging | Reseal after opening | |||
| 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 10 / 10 | ||||
| Shiheng Brand | ||||
| MF73T-1: High-power NTC Thermistor | ||||
| 10: Zero-power resistance at 25 is 10 | ||||
| 10: Max. steady-state current is 10A | ||||
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