1K107 Soft Nanocrystalline Rectangle Cores for Magnet Transformer
Oct 28, 2025
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Nanocrystalline rectangle cores offer several advantages over traditional core materials, including high magnetic permeability, which allows for more accurate current transformers and smaller core sizes. They also have a high saturation flux density and low core loss, leading to greater energy efficiency and performance, especially in high-frequency applications. Their superior magnetic properties make them suitable for a wide range of applications, from power supplies to sensors.
Nanocrystalline rectangle core Applications
- Common mode chokes
- High-frequency transformers
- Current transformers
- Power supplies (switched-mode, solar, etc.)
- Reactors and filter inductors
- Sensors
Nanocrystalline core Comparison with other materials
| Feature | Nanocrystalline Cores | Amorphous Cores | Ferrite and Silicon Iron Cores |
|---|---|---|---|
| Saturation flux density | High | Moderate | Lower than nanocrystalline cores |
| High-frequency performance | Excellent | Good | Poor, eddy current losses increase rapidly |
| Core loss | Very low | Low | High at higher frequencies |
| Thermal stability | Excellent | Good | Poor, especially ferrite |
| Size | Can be smaller due to high saturation flux density | Generally larger than nanocrystalline cores | Very large and heavy |
| Cost | Competitive | More expensive than silicon steel | Cheaper |
| Primary Applications | High-frequency transformers, common mode chokes | Power transformers, high-frequency inductors | Low-frequency applications |
Which one to choose?
Choose Nanocrystalline: For high-power applications requiring high efficiency and small size, such as high-frequency transformers and common mode chokes.
Choose Amorphous: For applications where the primary concern is extremely low energy loss, such as in power transformers where the cost of higher material cost is offset by energy savings.
Choose Silicon Iron or Ferrite: For low-frequency applications where cost is the main consideration and efficiency is not as critical.
Nanocrystalline Core specification
| CORE DIMENSION | |||
| OD(mm) | ID(mm) | L(mm) | H(mm) |
| 28 | 12 | 60 | 10 |
| 35 | 22 | 90 | 18 |
| 40 | 25 | 92 | 15 |
| 42 | 25 | 95 | 15 |
| 45 | 28 | 100 | 20 |
| 50 | 28 | 120 | 20 |
| 65 | 35 | 125 | 20 |
| 70 | 45 | 143 | 25 |
| 80 | 58 | 135 | 25 |
| 95 | 70 | 146 | 25 |
| 124 | 100 | 268 | 25 |
| 130 | 100 | 310 | 25 |
| 160 | 124 | 350 | 25 |
| 180 | 145 | 385 | 25 |
| 200 | 175 | 435 | 25 |
| 210 | 180 | 410 | 25 |
| 255 | 215 | 470 | 25 |
| Note: Additional sizes can be customized to meet specific customer requirements. | |||
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Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
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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Why Choose GNEE EC?
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.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
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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Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
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Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
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Industries Served
Automobile Industry
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Transformer Applications
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Strive To Create world-class Iron core brand
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