Changsha Purple Horn E-Commerce Co., Ltd.
| Resistance @ 25℃ | 8Ω |
| Power(Watts) | 3W |
| Operating Temperature | -40℃~170℃ |
| Pitch | 7.5mm |
| Tolerance | ±20% |
| Steady State Current (Max) | 3A |
| Thermal Time Constant | 47s |
| B Constant Tolerance | ±10% |
| B Constant (25℃/50℃) | 2800K |
| Description | NTC Thermistor 8Ω Through Hole,P=7.5mm |
| Mfr. Part # | MF72 8D11-3.5 |
| Package | Through Hole,P=7.5mm |
| Model Number | MF72 8D11-3.5 |
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Product Specification
| Resistance @ 25℃ | 8Ω | Power(Watts) | 3W |
| Operating Temperature | -40℃~170℃ | Pitch | 7.5mm |
| Tolerance | ±20% | Steady State Current (Max) | 3A |
| Thermal Time Constant | 47s | B Constant Tolerance | ±10% |
| B Constant (25℃/50℃) | 2800K | Description | NTC Thermistor 8Ω Through Hole,P=7.5mm |
| Mfr. Part # | MF72 8D11-3.5 | Package | Through Hole,P=7.5mm |
| Model Number | MF72 8D11-3.5 |
The MF72 Series Power NTC Thermistor from Nanjing Shiheng Electronics Co., Ltd. is designed for current limiting applications. Utilizing a silicone resin encapsulation, these thermistors offer high temperature resistance (up to 300C), rapid heat dissipation, and excellent insulation. They are suitable for various industrial applications where surge current suppression is critical. Despite potential surface friction marks and minor cracks at the leads due to material properties, these do not affect the product's performance or reliability.
| Item | Symbol | Test Conditions | Unit | Requirements | |||
|---|---|---|---|---|---|---|---|
| Zero Power Resistance at 25 | R25 | Ta=250.5 (Test Power 0.1mW, in air) | K | 820% | |||
| B-value | B25/50 | Ta=250.01, Tb=500.01 | K | 280010% | |||
| Max steady current | I max | - | A | 3 | |||
| Max allowable capacity value | CT | 240Vac | F | 220 | |||
| Thermal dissipation Coefficient | In still air | mW/ | 14 | ||||
| Thermal time constant | In still air | sec | 47 | ||||
| Withstand voltage | - | 500V/AC, 1min | - | No breakthrough and flash over | |||
| Insulation resistance | - | 500V/DC, 1min | M | 500 | |||
| Operating temperature range | - | - | -40 ~ 170 | ||||
| Maximum rated power | Pmax | - | W | 3 | |||
| Model: MF72 8D11 | Dimensions (mm): | Dmax | L1 | L22 | F0.5 | Tmax | d0.05 |
| - | - | 12.0 | 3.50.5 | 5 | 7.5 | 5.5 | 0.8 |
| Technical Requirements: | Zero Power Resistance: R25: 820% | ||||||
| - | B-value: B25/50: 2800K10% | ||||||
| - | Lead wire: Tinned copper-weld steel wire | ||||||
| - | Encapsulation: Green silicone resin | ||||||
| - | Environmental Compliance: RoHS | ||||||
| Reliability: Terminal strength | - | Pull strength (0.5| - | No obvious damage, |R25/R25|25% | | |||
| - | - | Pull strength (0.8| - | No obvious damage, |R25/R25|25% | | |||
| Reliability: Solderability | - | Temperature 2455, Time 2-3 sec | - | Tin coverage area 95% | |||
| Reliability: Withstand soldering temp | - | Tin pot temp: 2605, depth 6mm, time 101 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 30min 25 5min 170 30min 25 5min, 5 cycles | - | |R25/R25|25% | |||
| Reliability: High temperature storage | - | Temp: 1705, Time: 1000 hrs | - | |R25/R25|25% | |||
| Reliability: Durability for max steady current | - | Impose sustained max steady current at ambient temperature, 100024h | - | |R25/R25|25% | |||
| Reliability: Max capacity value | - | 1000 cycles (intermittent switch 50ms, cut 5 times thermal time constant) | - | |R25/R25|25% | |||
| Product Packaging: | Packing Type: Bulk Type | ||||||
| - | Packing Specification: Packing bag (self sealing bag) WH=11mm12mm | ||||||
| Installation & Use Precautions: | Purpose: Current limitation | ||||||
| - | Soldering: Weld spot at least 2mm from head, temp < 360, time < 3 sec | ||||||
| - | Storage Temperature: -1040; Humidity: 75% RH | ||||||
| - | Avoid storage in environments with corrosive gases and illumination. | ||||||
| - | Storage period: 1 year after opening and resealing. Re-inspection required after expiry. | ||||||
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
300~500
Ecer Certification：
Verified Supplier
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...
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