Minimum eddy current losses

Product Announcement from New England Wire Technologies Corporation

Pioneering in Litz for H.F. magnetic windings

Litz wire conductors are beneficial for reducing A.C. losses in high frequency windings. The first consideration in any design regarding Litz wire is the operating frequency. The operating frequency not only influences the actual construction details of the copper magnet wire, but is also used to determine the individual strand size of the Litz wire construction. All Litz constructions will exhibit some skin effect due to the limitations of stranding. Higher frequency ranges require more strands of a finer gauge size than Litz wires of equal cross sectional area but composed of fewer and larger strands.
The enamels commonly used for insulating individual strands are Polyurethane and Polyurethane with a Nylon topcoat because of the low electrical losses and ease of solderability. Other insulations can also be used. In many cases, Litz is insulated with an overall single or double wrap or serving, of a textile, but are also available unserved.
If the applications dictate special requirements for voltage breakdown or environmental protection, special film coatings on each individual strand are available as well as double and triple insulations overall to meet the requirements of UL and IEC 60950 and 60601.

The benefits of using litz are:

  • Increased efficiency
  • Mitigation of skin and proximity effect
  • Minimum eddy current losses
  • Lowered operating temperatures
  • Reduced footprint of final product
  • Substantial weight reduction
  • Avoidance of "hot spots"

New England Wire Technologies is considered by many, the premier litz wire manufacturer in the industry. In 1898, New England Wire Technologies became the first company in the United States to manufacture litz wire on a commercial basis. Since then, we have designed and manufactured thousands of different constructions for use over the E.L.F. through H.F. frequency ranges. Typical applications for litz conductors include high frequency inductors and transformers, inverters, communication equipment, ultrasonic equipment, sonar equipment, radio and television equipment as well as induction heating.
We have a wide range of magnet wire films, textile serves, tape wraps, and extruded insulations to meet these many needs. Round, square or rectangular shapes are manufactured to meet your needs. Rectangular aspect ratios up to 8 to 1 provide high power densities. Also available are Rutherford style cables including keystone shaped styles.

New England Wire Technologies

Whether working with customer supplied specification or designing to a unique requirement, New England Wire Technologies' design teams develop innovative, one-of-a-kind wire and cable solutions. On-site manufacturing processes include wire drawing, plating, braid, cabling and extrusion services. And, since all of our proprietary equipment and tooling is designed and built in-house, we have complete control while also offering quick modifications when needed. Through true vertical integration of manufacturing processes our customers' design-to-market curve is the shortest in the industry.


Our custom Litz, braids, cables & strands, ultra flexible single, multiconductor & coaxial cables are manufactured to meet exacting specifications for the medical, automotive, communications, computer, industrial electronics, robotics, and high-energy physics industries.


Thanks to the expertise of our people and the true vertical integration of our manufacturing approach, we can ensure that your design-to-market curve is the shortest in the industry. We design and build most of our own equipment and tooling, so we can offer a level of manufacturing agility that yields custom wire and cable products of exceptionally high quality in remarkably fast time frames.


New England Wire Technologies serves the gamut of industries worldwide…medical, industrial, scientific, military/aerospace, alternative power, audio/video…anywhere quality custom cable is required to improve your product.

Product Selection Guide

New England Wire Technologies specializes in custom cable design and manufacturing. We work with customers from design through production run to deliver cable that will meet your exact need. This Product Selection Guide is designed to give an overview of our capabilities and examples of common cable solutions. We hope you will use if for reference when discussing your unique requirements with our wire specialists. We are currently redesigning this guide, however have posted a .pdf file that is very large and may, depending on your internet speed, take a few minutes to load.

Contact Us

Sign up for our e-Newsletter!