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Amorphous and nanocrystalline cut cores are cutting-edge soft-magnetic core materials made from ultra-thin metal strips and delivered as cut or wound cores.
Compared to conventional metal cores or ferrites, these materials have significantly better magnetic performance, lower losses and higher efficiency — and are therefore ideal for demanding power, frequency and EMC applications.
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Nanocrystalline cores
Amorphous cores
All product groups are available as standard versions or as customer-specific special solutions — tailored precisely to your application.
Tip: Amorphous cores are ideal for applications that require low losses and high saturation flux density, while nanocrystalline cores are used where very high permeability, minimal losses and sophisticated high-frequency EMC filtering are critical.
Amorphous split coils offer extremely low core losses and a high saturation flux density (1.56 T) in a robust split coil design. Ideal for medium-frequency power conversion, where efficiency and compact design are crucial. The mechanical strength ensures resistance to breakage and corrosion even under harsh operating conditions.
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TOROIDAL CHOKE CORES WITH AIR GAP
Toroidal chokes are made from the amorphous iron alloy band “Metal Ribbon”. They offer a unique combination of extremely high saturation induction, high energy storage capacity and low core losses for high-frequency magnetic components that are significantly smaller than conventional components.
AMORPHOUS METAL BLOCKS
The blocks are made from an amorphous iron-based alloy. These blocks offer a unique combination of high induction saturation, high permeability, and low losses. These blocks can be arranged in various arrangements.
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SQUARE LOOP CORES
Square loop cores made from an amorphous cobalt-based alloy make it possible to design magnetic amplifiers that can operate at higher frequencies than previously possible. Thanks to their combination of magnetic properties, these magnetic amplifiers offer unparalleled precision and efficiency in output control.
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Amorphous cores use metal-glass technology, which is characterized by a completely non-crystalline atomic structure and is therefore fundamentally different from conventional crystalline alloys such as silicon steel, permalloy or nanocrystalline materials.
Through advanced ceramic manufacturing using manganese-zinc (MnZn) or nickel-zinc (NiZn) ferrites, we produce cores that are optimized for extremely low losses, high permeability and maximum temperature stability. Specially developed for the most demanding high-frequency transformer and inductor applications.
Performance benefits: Amorphous cores are ideal for demanding high-frequency applications, including UPS systems, PFC chokes for switching power supplies, filter inductors, and high-frequency power transformers.
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Nanocrystalline fission cores offer extremely low core losses and a high saturation flux density (1.25 T) in a robust fission core design. Ideal for medium-frequency power conversion, where efficiency and compact design are crucial. The mechanical strength ensures resistance to breakage and corrosion even under harsh operating conditions.
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NANOCRYSTALLINE TORUS CORES
The nanocrystalline cores consist of iron-based soft-magnetic material. They are made from crystalline amorphous ribbon and then heat treated at around 500-600°C.
The typical particle size is only 10 nanometers, hence the name “nanocrystalline.” There appear to be no restrictions on the types of cores that can be made from nanocrystalline material: C cores, E cores, toroids without housing, toroids with housing, multi-cut toroids with air gap, etc.
NANOCRYSTALLINE CT CORES
High-precision current transformer cores made from ion-based nanocrystalline material. These cores are characterized by a unique combination of moderate saturation induction, high permeability, good temperature stability and low costs.
NANOCRYSTALLINE BLOCKS
The blocks are made from an iron-based nanocrystalline alloy. These blocks offer a unique combination of high induction saturation, high permeability, and low losses. These blocks can be arranged in various arrangements.
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Product information, Lorem Ipsum. Fuga atque qui. Ullam facere Quibusdam. Dolorem ut id. Eum Ullam Laborum et. Aliquam voluptate ut.
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Product information, Lorem Ipsum. Fuga atque qui. Ullam facere Quibusdam. Dolorem ut id. Eum Ullam Laborum et. Aliquam voluptate ut.
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Nanocrystalline cores are characterized by exceptionally low core losses and high permeability, combined with the thermal stability required for compact, high-performance designs. Thanks to their consistent magnetic properties and efficient heat management, these cores are ideal for EMI suppression, current measurement, UPS systems, charging infrastructure for electric vehicles and filtering power lines. They prove to be particularly effective in common-mode chokes, current transformers and magnetic amplifiers.
Available in toroidal core, split core and busbar designs, although special configurations outside standard sizes are also possible. Thanks to rapid prototyping, low minimum order quantities and comprehensive technical support, we can offer both standard and customized solutions for your most demanding applications.
Exxpand Electronic develops and supplies core materials made from iron powder, ferrite, and amorphous and nanocrystalline materials — from proven standard solutions to custom-made products that offer a real competitive advantage.