Made from high-grade 1K107B nanocrystalline ribbon, this toroidal nanocrystalline core delivers excellent comprehensive magnetic properties. It achieves an initial permeability of up to 80,000 and maximum permeability reaching 300,000, with a saturation flux density of 1250 mT. It maintains stable magnetic performance across a wide operating temperature range of -50°C to 150°C, and its Curie temperature hits 570°C. Each finished core goes through strict visual inspection to control surface defects, ensuring consistent quality for mass production. With compact dimensions (OD 28.8 mm, ID 16.6 mm, height 12.6 mm), it supports easy winding and assembly for various inductive components.

This nanocrystalline toroidal core is widely used in power electronics and EMC industries. It is applicable to household power supplies, industrial control cabinets, communication power modules, new energy charging equipment and medical power units. It is also a great choice for signal filtering modules, surge protection devices and high-precision test instruments that need effective common-mode noise suppression.

This nanocrystalline toroidal core is mainly wound with enameled wire to produce high-performance common-mode inductors for EMC filter circuits. It suppresses common-mode electromagnetic interference on power lines and signal lines, helping end electronic products meet EMC test standards. We can match different winding turns and insulation structures according to customers’ actual circuit designs to realize the expected filtering effect under different current and frequency conditions.

Q: What is the main difference between amorphous cores and nanocrystalline cores? A: Amorphous cores have higher saturation flux density. Nanocrystalline cores feature higher permeability and lower loss, which performs better in medium and high-frequency filtering scenarios.

Q: What will cause impedance drift of amorphous toroidal cores? A: Impedance variation is mainly affected by operating temperature, DC bias current, annealing process and winding layout. We can adjust the process to minimize such drift for your project.

Q: Can amorphous cores work continuously under DC bias conditions? A: Yes. Amorphous cores have strong DC bias resistance. If your circuit carries large DC current, please inform us so we can select a suitable core specification.

Q: What are the common surface treatments for amorphous magnetic rings? A: Common options include epoxy coating, plastic casing and adhesive tape wrapping. These treatments provide insulation, dust protection and reduce vibration noise.

Q: What is the shelf life of amorphous cores under proper storage? A: When stored in dry, ventilated and non-corrosive environments, amorphous cores can keep stable magnetic performance for more than 24 months.