Amorphous Cores

Amorphous C-Cores from Bunting are ideal for single-phase and three-phase reactors and output chokes. They offer up to 50% more energy compared with alternative materials such as ferrites, Sendust, and silicon steel, allowing performance and efficiency to be enhanced without increasing the size of the system or reducing size without compromising performance. Amorphous C-cores are manufactured using an ultra-thin ribbon casting process that reduces unwanted eddy current losses at higher frequencies. The non-crystalline amorphous structure of the iron-based ribbon helps ensure minimum magnetic reversal losses. The cores are ideal for the growing number of high-frequency power conditioning applications.

C Core3


  • Power Transformers
  • Output Chokes
  • DMC
  • PFC
  • Medium-Frequency Transformers


  • Switch mode power supply
  • Invertors
  • Reactors
  • Power Factor Correction
  • Solid State Distribution Transformers
  • Electromagnetic Shielding

Typical Electromagnetic Performance Curve for Amorphous Cores

The following technical data… if you need further engineering assistance then please contact our Technical Department

Relative change of µ vs temperature

Amorphous - Relative change of µ vs temperature

Permeability Curve with Frequency of Amorphous CACC Cores

Permeability Curve

The DC-Bias Curve of Amorphous CACC Cores

DC Bias of Amorphous CACC Cores

The B-H Curve and µ-H Curve of Amorphous CACC Cores

BH Curve

Amorphous realtive change of Bs VS Temperature


Iron-based Amorphous Cacc Series Core Loss Curve


Amorphous Core Technical Data

Amorphous Core Technical Data

You can Download a copy of the 'Amorphous Core - Techincal Data Sheet' here:

Need Engineering Assistance?

Most of our customers often need a bit of help with selection, please contact us and our engineering staff can assist. Development quantities are available.