Product Overview
SST-Litz Wire is a specially designed high-frequency conductor that combines multiple individually insulated fine copper strands into a precisely twisted structure. Compared with conventional single-wire conductors, SST-Litz Wire effectively reduces AC losses caused by skin effect and proximity effect, improving electrical efficiency and thermal performance in high-frequency applications.
Designed for demanding electromagnetic applications, SST-Litz Wire provides excellent flexibility, low AC resistance, and stable performance, making it an ideal winding solution for high-frequency transformers, inductors, wireless power transfer systems, EV charging equipment, and energy conversion devices.
What Is SST-Litz Wire?
SST-Litz Wire is an advanced type of stranded magnet wire manufactured by twisting multiple individually enamel-coated copper strands into a controlled configuration.
Each fine copper strand is electrically insulated by enamel coating, allowing current to distribute evenly among strands. The special twisting structure enables each strand to periodically change its position within the conductor, minimizing unequal current distribution and reducing high-frequency resistance.
Compared with ordinary stranded wire, SST-Litz Wire is optimized for high-frequency electromagnetic performance rather than only mechanical flexibility.
SST-Litz Wire Technical Parameters
| Name | Litz wire |
| Conductor | Copper |
| Single wire dimension | 0.01 ~ 1.00mm |
| Numbers of strands | 5~10000 (odd or even optional) |
| Insulation material | Polyamide, Polyester, Polyurethane, etc |
| Standard | According to customer’s requirement |
| Packing | Ply wooden spool or according to customer’s requirement |
| Application | SST transformers, RF transformers, RF transceivers, Sensors, Ballasts, etc. |
Key Features of SST-Litz Wire
1. Reduced Skin Effect Loss
At high frequencies, electrical current tends to concentrate near the outer surface of a conductor, increasing AC resistance and energy loss. SST-Litz Wire uses many fine insulated strands instead of one large conductor, allowing current to flow more efficiently.
This design significantly reduces skin effect losses and improves winding efficiency in high-frequency electrical equipment.
2. Lower Proximity Effect Loss
When conductors operate in alternating magnetic fields, nearby strands influence current distribution and create additional losses.
The optimized strand arrangement of SST-Litz Wire helps balance magnetic field effects between strands, reducing additional AC resistance caused by proximity effects.
3. Excellent Flexibility and Winding Performance
Due to its multi-strand structure, SST-Litz Wire offers superior flexibility compared with solid copper wire.
It can easily adapt to:
- Compact coil designs
- Complex winding structures
- High-density transformer assemblies
- Miniaturized electronic components
This flexibility helps manufacturers achieve higher winding efficiency and better space utilization.
4. Improved Thermal Performance
Lower AC resistance means reduced copper loss during operation.
SST-Litz Wire helps:
- Reduce heat generation
- Improve temperature stability
- Extend component lifetime
- Increase system reliability
It is especially suitable for applications requiring continuous high-frequency operation.