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Specifications
Resistance @ 25℃:
2.5Ω
Operating Temperature:
-40℃~+200℃
Pitch:
7.5mm
Tolerance:
±20%
Steady State Current (Max):
6A
Thermal Time Constant:
1min
B Constant (25℃/50℃):
2600K
B Constant Tolerance:
±10%
Mfr. Part #:
MF72 2.5D13-3.5
Package:
Through Hole,P=7.5mm
Key Attributes
Model Number:
MF72 2.5D13-3.5
Product Description
Product Overview
The MF72 Power NTC Thermistor series from Nanjing Shiheng Electronics Co., Ltd. is designed for current limitation and surge current suppression. Utilizing a silicone resin encapsulation, these thermistors offer high temperature resistance (up to 300C), fast heat dissipation, and excellent insulation. They are suitable for applications requiring effective inrush current control. Despite potential surface friction marks and minor cracks at the lead encapsulation due to material properties and handling, these do not affect the product's performance or reliability.
Product Attributes
- Brand: Shiheng
- Origin: Nanjing, China
- Encapsulation Material: Green Silicone Resin
- Certifications: ISO9001:2015, IATF16949:2016, ISO14001:2015, RoHS 2.0, CQC (CQC04001010556), TUV (R50245892), UL (E241319), Jiangsu Province High-tech Product
- Lead Wire Material: Tinned copper clad steel wire
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Requirements | ||
|---|---|---|---|---|---|---|
| Zero Power Resistance at 25 | R25 | Ta=250.5 (Test Power 0.1mW, in air) | 2.5 20% | |||
| B-value (B25/50) | B | Ta=250.01, Tb=500.01 | K | 2600 10% | ||
| Max steady current | I max | - | A | 6 | ||
| Max allowable capacity value | CT | 240Vac | F | 560 | ||
| Thermal dissipation Coefficient | In still air | mW/ | 13 | |||
| Thermal time constant | In still air | sec | 60 | |||
| 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 (mm) | D Max | L1 | L2 | F0.5 | T Max | d0.05 |
| - | 14 | 3.50.5 | 52 | 7.5 | 6.0 | 0.8 |
| Reliability Item | Test Standard | Test Conditions and Methods | Performance Requirements |
|---|---|---|---|
| Terminal strength | IEC60068-2-21 | Lead diameter (mm): 0.5| |R25/R25|25% | |
| Solderability | IEC60068-2-20 | Temperature 2455, Time 2-3 sec | Wetted area 95% |
| Withstand soldering heat | IEC60068-2-20 | Tin pot temperature: 2605, immersion depth 6mm from body, Time 10 1 sec | |R25/R25|25% |
| Steady humidity and heat | IEC60068-2-78 | Temperature: 402, Humidity: 932%, Time: 1000 hrs | |R25/R25|25% |
| Rapid changes in temperature | IEC60068-2-14 | -40 30min 25 5min 200 30min 25 5min, 5 cycles | |R25/R25|25% |
| High temperature storage | IEC60068-2-2 | Temperature: 2005, Time: 1000 hrs | |R25/R25|25% |
| Durability for max steady current | IEC60539-1 | Sustained max steady current at ambient temperature, 100024h | |R25/R25|25% |
| Max capacity value durability | IEC60539-1 | 1000 cycles with Max capacity value, intermittent switch 50ms, cut 5 times thermal time constant as one cycle | |R25/R25|25% |
Product Packaging
- Packing Type: Bulk Type
- Packing Specification: Self sealing bag
- Packing Material, Size: Packing box WGH335mm240mm50mm
- Product Quantity: 1 (per packing box)
Installation & Use Precautions
- Purpose: Current limitation
- Soldering: Weld spot at least 2mm from head, temperature < 360, time < 3 sec.
- Storage Temperature: -1040
- Storage Humidity: 75% RH
- Storage Environment: Avoid corrosive gases and direct illumination.
- Shelf Life: 1 year after opening and resealing. Items can be re-inspected if expired.
2410121635_Nanjing-Shiheng-Elec-MF72-2-5D13-3-5_C18197904.pdf
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