Product Introduction

This toroidal nanocrystalline core is fabricated from premium 1K107B nanocrystalline ribbon, delivering well-rounded magnetic performance. It boasts an initial permeability as high as 80000, peak permeability up to 300000, alongside a saturation flux density of 1250 mT. It maintains steady magnetic characteristics over a broad operating temperature window ranging from -50°C to 150°C, with a Curie temperature of 570°C. Every finished core undergoes rigorous visual screening to limit surface imperfections, ensuring reliable and repeatable quality in volume production. Its compact footprint — OD 28.8 mm, ID 16.6 mm, height 12.6 mm — allows easy winding and assembly for a variety of inductive components.

Application Scope

This nanocrystalline toroidal core serves power electronics and EMC sectors extensively. It is suitable for consumer power supplies, industrial control enclosures, telecom power modules, new-energy charging hardware and medical power supplies. It is also ideal for signal filtering units, surge protection assemblies and high-precision test instruments requiring robust common-mode noise attenuation.

Usage

This nanocrystalline toroidal core is primarily wound with enameled wire to build high-performance common-mode inductors for EMC filter circuits. It attenuates common-mode EMI on power and signal lines, helping end products pass required EMC compliance tests. Different winding counts and insulation structures can be configured to match your circuit design, to achieve targeted filtering performance at specified current and frequency levels.

FAQ

Q: What is the typical working frequency range for amorphous toroidal cores? A: Amorphous cores work reliably from several kHz up to roughly 30 MHz. They are widely adopted for common-mode chokes inside inverters, EV chargers and switching power supplies.

Q: Are amorphous cores more resistant to saturation compared with standard ferrite cores? A: Yes. Amorphous material features higher saturation flux density. It can sustain larger current surges without saturation, making it preferable for heavy-current EMC filtering applications.

Q: Can amorphous cores be encapsulated or coated for noise reduction and insulation? A: Absolutely. We offer bare cores, epoxy-coated cores and cased versions. Encapsulation reduces audible magnetostriction noise and adds insulation and mechanical protection.

Q: What details should I provide for you to recommend a proper amorphous core? A: Please share your operating frequency, rated current, required impedance and space constraints. Our engineers can select the suitable core specification based on these circuit parameters.

Q: What certifications apply to your amorphous magnetic cores? A: Our amorphous cores comply with RoHS and REACH directives. They meet the material compliance requirements for most power electronics and EMC filter products.