1K101 Low Loss Amorphous Alloy Toroidal Core for Electronics
Oct 28, 2025
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Amorphous alloy toroidal cores are used in a variety of high-efficiency applications, especially where low energy loss is crucial, such as in power electronics (solar inverters, EV chargers, high-frequency transformers), EMI/EMC filters and common mode chokes for electronic devices, and sensors like current transformers. Their properties of high permeability and low core loss make them ideal for these roles.
Amorphous alloy toroidal core Applications
Power Electronics:
Solar inverters and EV chargers
High-frequency and switching power supply transformers
Power factor correction chokes
EMI/EMC Filtering:
Common mode chokes for switching converters and LED drivers
Input and output filters for AC power lines in various electronic and industrial systems
Inductors and Transformers:
High-frequency inductors in telecommunications and RF systems
Precision current transformers for energy metering and protection
Pulse transformers
Sensors:
Current and voltage transformers for measurements
Zero sequence current transformers
Other Applications:
Audio equipment for filtering and amplification
Relays, solenoids, and actuators
Amorphous alloy toroidal core vs Nanocrystalline Toroidal Core
Nanocrystalline toroidal cores have a structure with tiny crystalline grains, resulting in higher saturation flux density and permeability, while amorphous cores have a disordered atomic structure that gives them lower core losses and higher efficiency. Therefore, nanocrystalline cores are better for high-flux applications like high-frequency power transformers, whereas amorphous cores excel in applications where minimizing power loss is critical, such as in power distribution systems.
| Feature | Amorphous Alloy Toroidal Core | Nanocrystalline Toroidal Core |
|---|---|---|
| Structure | Disordered, non-crystalline atomic structure | Crystalline grains, a few nanometers in size, within an amorphous matrix |
| Saturation Flux Density | Lower | Higher, allowing it to handle higher magnetic flux levels |
| Core Loss | Lower, leading to higher energy efficiency | Higher than amorphous but lower than many traditional materials |
| Permeability | High | Very high |
| Best For | Applications where minimizing power loss is critical (e.g., power distribution, renewable energy systems, high-frequency converters) | High magnetic field and dynamic operating conditions (e.g., high-frequency power transformers, inverters, converters) |
| Frequency Performance | Excellent in high-frequency applications with reduced harmonic distortion | Excellent performance at higher frequencies (up to 100 kHz) |
Amorphous Core specification
| Magnetic core size(mm) | Protective box size(mm) | Effective cross-sectional area Ae(mm2) | Magnetic path length Ie(mm) | Maximum DC overcurrent class (A) |
||||||
| id | od | ht | ID | OD | HT | |||||
| 14 | 19 | 6.5 | 12 | 22 | 8 | 11.86 | 51.81 | 20 | ||
| 14 | 20 | 10 | 12 | 22.3 | 11.4 | 29.68 | 52.29 | 40 | ||
| 16 | 21 | 10 | 15 | 24 | 12.3 | 24.85 | 57.41 | 60 | ||
| 16 | 23 | 8 | 15 | 24 | 9.7 | 20.44 | 61.23 | 60 | ||
| 16 | 23 | 10 | 15 | 24 | 12.3 | 34.62 | 59.92 | 60 | ||
| 17 | 22 | 10 | 15.3 | 24.4 | 12.3 | 24.86 | 60.59 | 60 | ||
| 17 | 21 | 8 | 15.3 | 24 | 9.7 | 25.56 | 60.67 | 60 | ||
| 17 | 23 | 8 | 15.3 | 24.4 | 9.7 | 26.89 | 61.34 | 60 | ||
| 18 | 23 | 10 | 16.4 | 24.4 | 12.3 | 29.78 | 60.38 | 70 | ||
| 18 | 24 | 9 | 16.4 | 25 | 11.2 | 34.78 | 60.89 | 70 | ||
| 18 | 25 | 10 | 16.4 | 25.9 | 12.3 | 37.97 | 64.56 | 70 | ||
| 19 | 24 | 9 | 17.3 | 25 | 11.2 | 40.39 | 65.32 | 80 | ||
| 19 | 25 | 10 | 17.3 | 26 | 12.3 | 39.42 | 62.31 | 80 | ||
| 19 | 26 | 10 | 17.3 | 27.3 | 12.3 | 48.32 | 69.56 | 80 | ||
| 20 | 25 | 10 | 18.5 | 26.3 | 12.3 | 39.29 | 70.32 | 90 | ||
| 20 | 28 | 10 | 18.5 | 29 | 12.3 | 45.76 | 73.88 | 90 | ||
| 20 | 32 | 10 | 18.5 | 32.3 | 12.3 | 58.91 | 78.75 | 90 | ||
| 21 | 29 | 10 | 18.2 | 31.3 | 12.3 | 39.65 | 77.19 | 100 | ||
| 21 | 26 | 8 | 18.3 | 27.4 | 9.7 | 46.54 | 78.32 | 100 | ||
| 21 | 28 | 10 | 18.3 | 30 | 12.3 | 50.39 | 77.45 | 100 | ||
| 22 | 28 | 10 | 20.5 | 30 | 12.3 | 49.32 | 79.89 | 120 | ||
| 22 | 32 | 10 | 20.5 | 33.4 | 12.3 | 43.58 | 73.43 | 120 | ||
| 23 | 32 | 10 | 21.3 | 33.4 | 12.3 | 44.56 | 74.56 | 120 | ||
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Manufacturing Process
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GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.
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GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
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Over 18 years of success in the iron core industry;
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Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
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With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets