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High Bs (Saturation Flux Density) Nanocrystalline Cores, typically with a 1.25T rating, are advanced magnetic components known for their high permeability, low losses, and high efficiency in power electronics applications. These Fe-based amorphous/nanocrystalline alloys offer a superior alternative to ferrites (typically ~0.4T) and can operate at high temperatures.
Key Characteristics (1.25T Nanocrystalline Core)
- High Saturation Induction (): Typically 1.2 – 1.25 T, allowing for smaller, lighter components.
- High Permeability: Up to 100,000 , enabling higher inductance and fewer turns.
- Low Core Loss: Excellent efficiency and low temperature rise compared to traditional materials.
- Temperature Stability: High Curie temperature () around 560°C–570°C, with stable performance ranging from -40°C to +130°C/140°C.
- Rectangular Ratio (): High ratio (), often designed for high-performance magnetic amplifiers.
Primary Applications
- Magnetic Amplifiers (Mag-Amp): Used in SMPS and server power supplies for output regulation.
- Common Mode Chokes (CMC): High permeability makes them ideal for EMC filters.
- High-Frequency Transformers: Used in welder inverters, solar inverters, and UPS systems.
- Current Transformers (CT): High precision, low loss.
- PFC Chokes & Inductors: High-power applications.
Comparison with Other Materials
- Vs. Ferrites: Nanocrystalline cores offer 3x the saturation flux density (vs.) and superior performance at high frequencies.
- Vs. Silicon Steel: Lower AC losses and better high-frequency performance.
- Vs. Permalloy: Comparable performance at a lower cost.
Common manufacturers and trade names include Finemet, Magnetics, and King Magnetics.
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Web results
Nanocrystalline Cores for Magnetic Amplifiers for Switched ...
King Magnetics
https://www.kingmagnetics.com › nanocrystalline-cores...
King Magnetics
https://www.kingmagnetics.com › nanocrystalline-cores...
Feb 19, 2024 — Characteristics: > High saturation flux density Bs=1.25T – Small size, lower turns. > High rectangle ratio Br/Bm≥94% – Low dead angle ...Read more
5pcs Amorphous Core Nanocrystalline Alloy Inverse Inductive ...
Amazon.com
https://www.amazon.com › RXKPWRFX-Amorphous-...
Amazon.com
https://www.amazon.com › RXKPWRFX-Amorphous-...
Product summary presents key product information · 5pcs Amorphous Core Nanocrystalline Alloy Inverse Inductive Iron Core 50X32X20 Ring Type Permeability 1.25T.
Nanocrystalline Cores
Mag Inc.
https://www.mag-inc.com › Media › File-Library
Mag Inc.
https://www.mag-inc.com › Media › File-Library
PDF
Nanocrystalline cores are a lower cost alternative to permalloy and exhibit improved accuracy compared to silicon steel. The material's low AC losses result in ...Read more
2 pages
Nanocrystalline Core for Medical-Grade Isolation Transformers
amorphousoem.com
https://www.amorphousoem.com › Solid Core
amorphousoem.com
https://www.amorphousoem.com › Solid Core
Featuring high permeability (μi up to 80,000), Bs 1.25 T, low core loss, and wide working temperature range (–40 °C to 140 °C). Details. Want a Magnet Expert ...Read more
Nanocrystalline Toroidal Cores | EV & EMI
CenturaCores
https://centuracores.com › Products
CenturaCores
https://centuracores.com › Products
Nanocrystalline cores offer 10x higher permeability than ferrite, enabling smaller, lighter designs with 99%+ efficiency at high frequencies up to 100kHz.Read more
High Performance Oval Shape Nanocrystalline Core
nanocrystallinecore.com
https://www.nanocrystallinecore.com › high-performanc...
nanocrystallinecore.com
https://www.nanocrystallinecore.com › high-performanc...
Characteristics. > High saturation flux density Bs=1.25T - Small size, lower turns > High rectangle ratio Br/Bm≥94% - Low dead angle voltage, large working ...Read more
HF-T Series Nanocrystalline Core For High Frequency & ...
Guangzhou Amorphous Electronic Technology Co.,ltd.
https://www.coilcore.com › hf-t-series-nanocrystalline-co...
Guangzhou Amorphous Electronic Technology Co.,ltd.
https://www.coilcore.com › hf-t-series-nanocrystalline-co...
Low remanent flux density Br with DC-tolerance. Typical Parameter. Saturation flux density. Bs = 1.25 T. Density. D= 7.2 kg/m3. Vickers Hardness. Hv= 880 kg/mm2.Read more
Nanocrystalline Cores for High Frequency Transformers, ...
King Magnetics
https://www.kingmagnetics.com › nanocrystalline-transf...
King Magnetics
https://www.kingmagnetics.com › nanocrystalline-transf...
Nov 22, 2023 — Nanocrystalline Transformer Core has high permeability, high saturation induction, low coercivity, low core loss. Suitable for high ...Read more
Development of Fe-based high Bs nanocrystalline alloy ...
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
by M Ohta2020Cited by 10 — This powder was fabricated in amorphous phase with α-Fe grains of a few nanometers. They were then annealed to form the nanocrystalline phase.Read more
Nanocrystalline Core 1K107 For Transformer Suppliers ...
Hangzhou Ualloy Material Co.,Ltd
https://www.alloystrip.com › nanocrystalline-core-1k10...
Hangzhou Ualloy Material Co.,Ltd
https://www.alloystrip.com › nanocrystalline-core-1k10...
Physical properties of Nanocrystalline alloy. Saturation magnetic induction (Bs). 1.25T. Hardness (Hv). 880. Curie temperature (TC). 560℃. Density (d). 7.2g/cm3.Read more