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Specifications
Resistance @ 25℃:
10Ω
Power(Watts):
1W
Pitch:
5mm
Operating Temperature:
-40℃~130℃
Tolerance:
±20%
B Constant (25℃/100℃):
-
Steady State Current (Max):
1A
Thermal Time Constant:
27s
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
2800K
B Constant Tolerance:
±10%
Mfr. Part #:
MF72 10D7
Package:
Through Hole,P=5mm
Key Attributes
Model Number:
MF72 10D7
Product Description
Product Overview
The MF72 Power NTC Thermistor series from Nanjing Shiheng Electronics Co., Ltd. is designed for current limiting applications. This series offers reliable surge current suppression with a maximum steady current of 0.9A and a maximum allowable capacity value of 100F at 240Vac. Operating within a temperature range of -40 to 130, these thermistors are constructed with a black phenolic resin encapsulation and feature tinned copper clad steel wires for lead connections. They meet RoHS environmental protection requirements.
Product Attributes
- Brand: Shiheng ()
- Product Type: Power NTC Thermistor
- Series: MF72
- Encapsulation Material: Black phenolic resin
- Lead Wire Material: Tinned copper clad steel wire
- Certifications: ISO9001:2015, IATF16949:2016, ISO14001:2015, RoHS 2.0, CQC (CQC04001010556), TUV (R50245892), Jiangsu Province High-tech Product
- Origin: Nanjing, China
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Performance Requirements |
|---|---|---|---|---|
| Zero Power Resistance at 25 | R25 | Ta=250.5 (Test Power 0.1mW, in air) | 10 20% | |
| B-value (B25/50) | B | Ta=250.01, Tb=500.01 | K | 2800 10% |
| Max steady current | I max | - | A | 0.9 |
| Max allowable capacity value | CT | 240Vac | F | 100 |
| Thermal dissipation Coefficient | In still air | mW/ | 9 | |
| Thermal time constant | In still air | sec | 27 | |
| Withstand voltage | - | 500V/AC, 1min | - | No breakthrough and flash over |
| Insulation resistance | - | 500V/DC, 1min | M | 500 |
| Operating temperature range | - | - | -40 ~ 130 | |
| Maximum rated power | Pmax | - | W | 1 |
Product Drawing Dimensions
| Model | DMax | L1Min | L2 2 | F 0.5 | TMax | d 0.05 |
|---|---|---|---|---|---|---|
| MF72 10D7 | 8.0 | 20 | 5 | 5.0 | 5 | 0.6 |
Reliability Testing
| Item | Test Standard | Test Conditions and Methods | Performance Requirements |
|---|---|---|---|
| Terminal strength | IEC60068-2-21 | Lead diameter (0.5| No obvious damage, |R25/R25|25% | |
| Solderability | IEC60068-2-20 | Temperature 2455, time 2-3 sec | Wetting area 95% |
| Withstand soldering heat | IEC60068-2-20 | Tin pot temperature: 2605, insert depth from body 6mm, time 10 1 seconds | |R25/R25|25% |
| Steady humidity and heat | IEC60068-2-78 | Temperature: 402, humidity: 932%, Time: 500 hrs | |R25/R25|25% |
| Rapid changes in temperature | IEC60068-2-14 | -40 30min25 5min130 30min25 5min, 5 cycles | |R25/R25|25% |
| High temperature storage | IEC60068-2-2 | Temperature: 1305, Time: 500hrs | |R25/R25|25% |
| Durability for max steady current | IEC60539-1 | Sustained max steady current upon the thermistor at ambient temperature. 50024h | |R25/R25|25% |
| Max capacity volume | IEC60539-1 | Impose 1000 cycles. Intermittent switch 50ms, cut 5 times thermal time constant as one cycle. | |R25/R25|25% |
Product Packaging
| Packing Type | Packing Specification | Packing Material, Size | Quantity |
|---|---|---|---|
| Bulk Type | 1 | Self sealing bag, WH11mm12mm | - |
| Reel Type | 2 | Reel packing box, WGH335mm240mm50mm | - |
| Pallet Packaging | - | - | - |
Installation & Use Precautions
- Purpose: Current limitation (surge current suppression).
- Soldering: Weld spot should be at least 2mm from the encapsulation head. Welding temperature should be under 360, with a time of less than 3 seconds.
- Storage Temperature: -1040.
- Storage Humidity: 75% RH.
- Environment: Avoid storage in environments with corrosive gases and direct illumination.
- Shelf Life: Packaging needs to be resealed after opening. Storage period is 1 year. Products exceeding the storage period can be retested according to the standard requirements and can still be used if they meet the requirements.
2410121635_Nanjing-Shiheng-Elec-MF72-10D7_C72680.pdf
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