Silicone Resin Encapsulated Nanjing Shiheng Elec MF72 10D13-3.5 Power NTC Thermistor for Industrial
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Delivery Time:
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Product Description
Product Overview
The MF72 Series Power NTC Thermistors from Nanjing Shiheng Electronics Co., Ltd. are designed for current limiting applications. These thermistors utilize a silicone resin encapsulation, offering high temperature resistance (up to 300C), rapid heat dissipation, and excellent insulation. Despite potential surface friction marks and minor cracks at the lead due to material properties and handling, these do not affect the product's performance or reliability. They are suitable for various industrial applications requiring inrush current suppression.
Product Attributes
- Brand: Shiheng
- Series: MF72
- Product Type: Power NTC Thermistor
- Encapsulation Material: Green Silicone Resin
- Certifications: ISO9001:2015, IATF16949:2016, ISO14001:2015, RoHS 2.0, CQC, TUV, UL, Jiangsu High-tech Product
- Origin: Nanjing, China
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Requirements |
|---|---|---|---|---|
| Zero Power Resistance at 25 | R25 | Ta=250.5 (Test Power 0.1mW, in air) | 1020% | |
| B-value | B25/50 | Ta=250.01, Tb=500.01 | K | 300010% |
| Max steady current | I max | - | A | 4 |
| Max allowable capacity value | CT | 240Vac | F | 330 |
| Thermal dissipation Coefficient | In still air | mW/ | 15 | |
| Thermal time constant | In still air | sec | 65 | |
| Withstand voltage | - | 500V/AC, 1min | - | No breakthrough and flash over |
| Insulation resistance | - | 500V/DC, 1min | M | 500 |
| Operating temperature range | - | - | -40 ~ 200 | |
| Maximum rated power | Pmax | - | W | 4 |
| Dimensions (Unit: mm) | D Max | - | mm | 14 |
| L1 | 0.5 | mm | 3.5 | |
| L2 | 2 | mm | 5 | |
| F | 0.5 | mm | 7.5 | |
| T Max | - | mm | 6.0 | |
| d | 0.05 | mm | 0.8 | |
| Lead wire material | - | - | - | Tinned copper clad steel wire |
Reliability - Terminal strength (0.5| - | Pull strength: 10 N, Time: 101 sec | - | No obvious damage |R25/R25|25% | |
| Reliability - Solderability | - | Temperature 2455, time 2-3 sec | - | Coverage area 95% |
| Reliability - Withstand soldering temp | - | Tin pot temp: 2605, immersion depth 6mm, time 10 1 sec | - | |R25/R25|25% |
| Reliability - Steady humidity and heat | - | Temp: 402, humidity: 932%, Time: 1000 hrs | - | |R25/R25|25% |
| Reliability - Rapid changes in temperature | - | -40 30min25 5min200 30min25 5min, 5 cycles | - | |R25/R25|25% |
| Reliability - High temperature storage | - | Temp: 2005, Time: 1000 hrs | - | |R25/R25|25% |
| Reliability - Durability for max steady current | - | 100024h at ambient temperature | - | |R25/R25|25% |
| Reliability - Max capacity valume | - | 1000 cycles (intermittent switch 50ms, cut 5 times thermal time constant) | - | |R25/R25|25% |
Product Packaging
Packing Type: Bulk Type
| Packing Specification | Packing Material, Size | Quantity |
|---|---|---|
| 1 | Self sealing bag | - |
| 2 | Reel packing box (WGH335mm240mm50mm) | - |
Installation & Use Precautions
- Purpose: Current limitation.
- Soldering: Weld spot at least 2mm from the head, temperature below 360, time
- Storage Temperature: -1040.
- Storage Humidity: 75% RH.
- Storage Environment: Avoid corrosive gases and direct sunlight.
- Shelf Life: 1 year after opening. Re-inspection is required for use beyond the shelf life.
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