Fe-based nanocrystalline ribbons are advanced soft magnetic materials engineered for superior performance in high-frequency, low-loss power applications. Produced by rapid solidification of iron-based alloys followed by precise thermal annealing, these ribbons consist of ultra-fine grain structures in the nanometer range, offering exceptional magnetic permeability, high saturation flux density, and minimal core loss.

These ribbons are widely used in manufacturing high-efficiency transformer cores, common mode chokes, power inductors, and magnetic shielding components. Their optimized magnetic properties enable reduced size and weight in electronic components while improving energy efficiency and thermal stability.

Fe-based nanocrystalline ribbons are available in various grades and customized dimensions to meet application-specific requirements in industries such as power electronics, renewable energy systems, electric vehicles, telecommunications, and aerospace.

 Features

• Extremely high initial and maximum permeability

• Low core loss at high frequencies

• High saturation flux density (1.2 – 1.3 T typical)

• Excellent temperature stability and thermal conductivity

• Superior EMI suppression and filtering performance

• Available in various widths and thicknesses

• Suitable for annealing, slitting, and coil winding

Technical Specifications

• Composition: Fe-based alloy with Si, B, Cu, Nb

• Structure: Nanocrystalline (grain size approx. 10–20 nm)

• Saturation Flux Density: 1.2 – 1.3 Tesla

• Relative Permeability: >80,000 (typical)

• Coercivity: <2 A/m

• Electrical Resistivity: >110 μΩ·cm

• Thickness: 0.015 mm to 0.030 mm

• Width: 3 mm to 100 mm (custom on request)

• Frequency Range: Up to several MHz

• Operating Temperature: -55°C to +130°C

• Compliance: IEC 60404, RoHS, and REACH standards

Applications

• High-frequency transformer and inductor cores

• Common mode chokes for EMI suppression

• Power filters in renewable energy systems

• Electric vehicle power conversion systems

• Smart grid equipment and power meters

• Magnetic shielding for electronic devices

• Aerospace and precision power electronics

Fe-based nanocrystalline ribbons are a preferred solution in advanced magnetic applications demanding compact design, energy efficiency, and consistent performance across temperature ranges. Their nanostructured grain size and magnetic uniformity provide a modern alternative to traditional ferrite and amorphous core materials.