Manufactured using high-quality 1K107B nanocrystalline ribbon, this toroidal nanocrystalline core delivers outstanding overall magnetic properties. Its initial permeability hits up to 80,000, maximum permeability reaches 300,000, and the saturation flux density stands at 1250 mT. It maintains consistent magnetic behavior across a wide working temperature range of -50°C to 150°C, with a Curie temperature of 570°C. Each finished core is subject to strict visual inspection to control surface defects, ensuring stable quality for mass production. With compact dimensions (OD 28.8 mm, ID 16.6 mm, height 12.6 mm), it allows easy winding and assembly for different types of inductive components.

This nanocrystalline toroidal core is widely applied in power electronics and electromagnetic compatibility industries. It is compatible with household power supplies, industrial control cabinets, communication power modules, new energy charging equipment and medical power supplies. It also works perfectly for signal filtering units, lightning protection modules and high-precision test instruments that demand 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 satisfy EMC test criteria. We can configure different winding turns and insulation structures according to customers’ actual circuit design, so as to achieve the expected filtering effect under different current and frequency conditions.

Q: How does annealing affect the performance of amorphous toroidal cores?

 A: Proper annealing releases internal stress inside the alloy ribbon, reduces coercivity and core loss, and optimizes permeability. Improper annealing will lead to unstable magnetic performance.

Q: What are the main limitations of amorphous magnetic cores?

A: Amorphous ribbon is thin and fragile, so it needs careful handling. Its high-frequency loss is higher than nanocrystalline cores, so it is less preferred for ultra-high frequency filtering.

Q: Can amorphous cores be used in outdoor equipment?

A: They can be used outdoors with proper encapsulation. Bare amorphous cores are vulnerable to moisture and corrosion; epoxy or plastic casing is required for outdoor long-term operation.

Q: How to judge whether an amorphous core is saturated during operation?

A: Once saturated, the core permeability drops sharply, filtering impedance decreases obviously, and the inductor will heat up rapidly. You can verify this through impedance curve test or temperature monitoring.

Q: What is the difference between amorphous core and silicon steel core?

A: Amorphous cores feature much lower core loss at medium and high frequencies. Silicon steel is more suitable for low-frequency high-power scenarios such as power frequency transformers.