Basic Litz Wire
General
Litz wire made of enameled magnet wires is either used for high frequency or heating related applications. Ultra fine litz wires provide solutions for both technologies regardless of frequency or impedance range. Electrical, mechanical and cost aspects need to be considered carefully during the design phase.
Features and benefits of litz wire for high frequency applications
- Reduction of high frequency losses
- Cost effective design
- Resistance or frequency related construction
- Increased tensile strength by using additional strain relief
- Flexibility for high conductor cross sections
Features and benefits for heating applications
- Precise resistance related manufacturing
- Very broad field of application (drying, heating, warming up)
- Different conductor materials available with excellent mechanical properties
- High thermal stability
Technical properties of basic litz wires
| Properties | For high frequency applications | For heating applications |
|---|---|---|
| Conductivity | high | medium |
| Resistance | medium | high |
| Tensile strength | low - medium | high |
| Looping behaviour | low | high |
| Splicing | medium | high |
| Bending cycle performance | high | high |
| Typical conductor material | copper | copper, alloys |
| Typical wire insulation | polyurethane, polyester-imide | polyurethane |
| Diameter of single wire | 0.010 - 0.700 | mm |
| Number of single wires | 2 - 25,000 | pcs |
| Outer diameter of litz wire | 0.095 - 20.00 | mm |
| Typical length of lay: Single step Multiple step |
2.00 - 26.00 20.00 - 60.00 |
mm mm |
Applications
- HF transformers
- Chokes
- Switching power supplies
- Hearing aids
- Sensors
- Ballasts
- Resistance wires for heating applications
- Motors