What is Litz Wire?

Looking for a flexible wire that can operate at high frequencies? Litz wire is what you’ve been looking for. There are many different kinds of litz wire, so call TEMCo for a quote today!


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What is Litz Wire?

Litz wire is made of many individually insulated wire strands twisted together, following one of several patterns. It is used to carry alternating current and designed to reduce the skin effect and proximity effect.

The term litz wire originates from the German word litzendraht, which means braided/stranded wire or woven wire.



Applications

What is litz wire found in? Litz wire can be used in a number of applications, including conductors, inductors, transformers, motors, inverters, television equipment, and heat induction equipment.



Litz Wire for Motor Litz Wire for Speaker Litz Wire for Transformer

What is litz wire classified by?


There are 8 types of litz wire, each with an optional outer insulation of yarn or tape.


  • Type 1 - Individually insulated wires twisted together
  • Type 2 - Uninsulated type 1 litz wires twisted together
  • Type 3 - Insulated type 2 litz wires twisted together
  • Type 4 - Uninsulated type 2 litz wire twisted together around a central fiber core
  • Type 5 - Insulated type 2 Litz wire twisted around a fiber core
  • Type 6 - Insulated type 4 Litz wire twisted around a fiber core
  • Type 7 - Insulated wire braided and formed into rectangular wire
  • Type 8 - Insulated strands twisted and compressed into rectangular wire

What is litz wire classified by?

Frequency

Litz wire is very good at reducing the skin effect in wires with frequencies below 500 kHz, decently effective at wires up to 1 MHz, but it is rarely used in applications with frequencies above 2 MHz.



Served vs. Unserved

Served litz wire is wrapped with a nylon textile, yarn or silk to give it extra protection and strength. Unserved wire does not have this extra protection.



What is Litz Wire made of?

The outer insulation and the insulation on the component conductors may be nylon, cotton, fiberglass, ceramic, mylar, capronic or silk threads.

Heat-sealed polyester, rubber, vinyl and Teflon tape wraps can also be used as outer insulation for litz wire if the applications require special voltage breakdown or environmental protection.



Wire Sizes

Litz wire sizes are often shown as the number of strands over the AWG (American Wire Gauge) size of each strand.

For example, If a wire had ten strands of 24 AWG wire it would be written out as 10/24.


What is litz wire size?

Braiding - Make your own litz wire.

What is litz wire braiding? Braids of litz wire can either be flat or round.

To braid wire, you must first measure the wires to the desired length and cut them. Since braiding reduces the ultimate length of the cable, you should add 1.25 inches for every foot of wire, or 1 centimeter for every 10 centimeters.

You then need to solder the ends of the conductors together to make sure that they do not come loose and then secure the soldered wire to a clamp to keep it in place.


  • To make a 3 wire flat braid: Move the outer left wire over the middle wire to the right, then move the outer right wire over the middle wire to the left. Continue doing this until you reach the end of the wire.
  • To make a 3 wire round braid: Move the center wire under the left wire, around it and over again into the center. Then move the center wire under the right wire, around it and over again into the center. Repeat until you the end of the wire is reached.
  • To make a 4 wire flat braid: Move the outer left wires over two wires to the right. Then move the outer right wire over one wire to the left. You must then move the outer left wires under two wires to the right and move the outer right wire under one wire to the left. Repeat until you reach the end of the cable.


Where can I buy litz wire?

TEMCo supplies any type of wire you may need, all it made in the USA. Find the litz wire you’ve been searching for by calling TEMCo today!

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Call us at 877.474.8209