Litz Wires

High-performance connectivity for high-frequency applications

At Casa Masfarné, we specialize in the manufacture of high-quality Litz wires, formed by multiple fine strands of enameled copper grouped and braided. These conductors are specifically designed to optimize electrical performance in medium and high-frequency applications, offering great flexibility, energy efficiency, and mechanical resistance.

Request a quote

Technical Advantages

Our Litz wires are optimized for frequency ranges between 10 kHz and 5 MHz, and offer multiple benefits:

Reduction of the Skin Effect:

Thanks to the individual insulation of each copper wire, alternating current losses are minimized, significantly improving efficiency at high frequencies.
Decrease in the Proximity Effect:

The braided construction reduces additional losses caused by magnetic fields generated between adjacent conductors, which is crucial in high current density applications.

Common Applications

Litz wires are key components in advanced electronic and power systems, including:

High-frequency transformers
Inductors and coils for switched-mode power supplies (SMPS)
Wireless chargers
Resonant systems
Power and conversion electronics
Electrical automation
Medical equipment (magnetic resonance imaging)
Renewable energy
Rail sector
Aeronautics and aerospace

Related products

The company also offers essential products such as electrical connections, Litz wires, flexible Cl.5 / Cl.6 conductors, and flexible braids, which are essential for optimal electrical conduction and efficiency.

Flexible Copper Braids

At Casa Masfarné, we specialize in manufacturing flexible copper braids designed for a wide range of electrical applications. Our braids are made from fine electrolytic copper (Cu-ETP) strands, carefully braided to ensure exceptional flexibility, excellent conductivity, and long-lasting durability. We offer configurations with 8, 16, 24, and 32 strands, allowing us to tailor our solutions […]

Litz Wire Connections

Our Litz wire connections are designed and manufactured for high-frequency environments, with adequate insulation according to the specific use.

Technical Design and Specifications

The construction of each Litz wire is defined according to the electrical parameters (frequency, intensity, and working environment). The most relevant technical aspects include:

Wire diameter (Table 1):
Selected according to the working frequency, from 0.05 mm Ø to 5 mm Ø

Type of enamel and number of layers (Table 2):

Grade 1: One layer of varnish (solderable).
Grade 2: Two layers of varnish (non-solderable).

Available thermal classes:

F155 (155 ºC): Polyurethane varnish
F180 (180 ºC): Polyester or polyurethane varnish
F200 (200 ºC): Polyester or polyamide varnish.

Solderability: The type of enamel can be adapted to be solderable or non-solderable according to the assembly requirements.

Table preview:

See full table

Total number of wires: Determined according to the desired total section.

Type of grouping:

Stranded wiring: Number of strands, number of wires per strand, and possibility of a central conductor.
Braiding: Recommended for large quantities of fine wires, as it allows balancing the position of each wire and minimizing the effects of proximity and magnetic imbalance.

External Insulations (Table 3)
The external insulation is selected according to the thermal, mechanical, and environmental conditions of the usage environment.

We offer the following options: (Material and maximum temperature)

Nylon (Polyamide): Up to 120 ºC
Polyester: 130 ºC – 155 ºC
Nomex ®: Up to 180 ºC
Kapton ®: Up to 300 ºC

Table preview:

See full table

Why choose Litz wires from Casa Masfarné?

Maximum Efficiency

Designed to minimize electrical and thermal losses even in the most demanding environments.
Custom Configuration

We manufacture each Litz wire according to the client's specific requirements (frequency, temperature, environment, etc.).
Premium Materials

We use insulation materials such as Kapton®, Nomex®, polyester, or nylon, which guarantee high thermal resistance and excellent dielectric capacity.

Commitment to excellence

At Casa Masfarné, we combine more than 130 years of experience with cutting-edge technology to offer completely tailored Litz wire solutions, meeting the most demanding electrical, thermal and mechanical requirements of the current market.