FTIW-F Class 155 0.27mmx7 Extruded ETFE Insulation Litz Wire For High Frequency Transformer
ETFE insulation Litz wire is a high-performance cable featuring a bundle of individually insulated strands twisted together and coated with an extruded layer of Ethylene Tetrafluoroethylene (ETFE) insulation. This combination offers superior performance in demanding applications by minimizing skin-effect losses in high-frequency environments, enhanced electrical properties for high-voltage use, and excellent thermal, mechanical, and chemical resistance due to the strong ETFE fluoropolymer.
- Individual copper strands are insulated, often with a lacquer coating.
- These strands are then twisted or bundled together to form the Litz structure.
- An extruded, continuous layer of ETFE is applied to the outside of the twisted bundle for protection and enhanced insulation.
Reduced AC Resistance:
The twisted, multi-strand construction minimizes skin effect and proximity effect, leading to improved efficiency at high frequencies.
Enhanced Insulation:
ETFE provides excellent electrical insulation and high breakdown voltage, suitable for high-voltage applications.
Superior Durability:
The fluoropolymer insulation offers outstanding resistance to heat, chemicals, moisture, and UV radiation, ensuring longevity in harsh environments.
Flexibility:
The multiple strands and ETFE's mechanical properties contribute to increased flexibility.
High-Frequency Transformers:
Used in transformers to improve efficiency and reduce losses at high operating frequencies.
Wireless Charging Systems:
Its robust nature and high electrical performance make it ideal for applications like forklift wireless charging systems.
Aerospace and Medical Industries:
The durability and high-performance characteristics of ETFE make it suitable for demanding aerospace, medical, and nuclear instrumentation applications.
Harsh Environments:
Its resistance to chemicals and extreme temperatures allows it to be used in industrial and marine environments.
Characteristics | Test Standard | Test result | ||
Outer diameter of single wire | 0.295mm | 0.288 | 0.287 | 0.287 |
Min. insulation thickness | /Mm(min) | 0.019 | 0.018 | 0.019 |
Pitch | S12±2 | ok | ok | ok |
Single wire Diameter | 0.27±0.004MM | 0.269 | 0.269 | 0.268 |
Overall dimension | 1.06-1.2mm(Max) | 1.078 | 1.088 | 1.085 |
Conductor Resistance | Max.45.23Ω/KM(max) | 44.82 | 44.73 | 44.81 |
Breakdown voltage | Min. 6KV(min) | 15 | 14.5 | 14.9 |
Solder ability | 450℃ 3Secs | OK | OK | OK |
Conclusion | Qualified |





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