1K107 Soft Magnetic Core High Power Nanocrystalline Square Transformer Core
Oct 28, 2025
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A nanocrystalline square transformer core is a magnetic core made from a special alloy with a grain size in the nanometer range, offering high permeability, low loss, and high saturation flux density. The square shape is a design choice for specific applications, such as current transformers, where it provides a compact and efficient solution, enabling smaller, lighter, and more efficient transformers with improved linearity and reduced core losses compared to traditional materials.
nanocrystalline square core applications
- Current transformers (CTs)
- Common mode inductors (CMCs)
- High-frequency transformers
- Filtering inductors and chokes
- Power factor correction (PFC) inductors
- Magnetic amplifiers
1. Comparison with Amorphous Alloy Cores
| Aspect | Nanocrystalline Square Cores | Amorphous Alloy Cores |
|---|---|---|
| Key Features | Stronger magnetic conductivity, less power loss at high frequencies, wider temperature resistance range (-50°C to 200°C) | Good magnetic conductivity (weaker than nanocrystalline), narrower temperature range (-40°C to 150°C) |
| Drawbacks | More expensive (roughly 2–3x the cost of amorphous cores), more complex manufacturing | Slightly higher saturation magnetic flux density (can withstand stronger magnetic fields) |
| Typical Uses | High-frequency transformers (e.g., phone chargers, EV charging piles) | Power-frequency transformers (e.g., household distribution boxes, ordinary power transformers) |
2. Comparison with Silicon Steel Cores
| Aspect | Nanocrystalline Square Cores | Silicon Steel Cores |
|---|---|---|
| Key Features | Almost no power loss at high frequencies, compact size | Only suitable for low-frequency scenarios; high power loss and heat generation at high frequencies |
| Drawbacks | Higher cost (3–5x the cost of silicon steel), weaker resistance to strong magnetic fields | Large size, completely unsuitable for high-frequency use |
| Typical Uses | Precision electronic equipment (e.g., medical instruments, communication base station power supplies) | Traditional power equipment (e.g., large transformers, electric motors) |
3. Comparison with Ferrite Cores
| Aspect | Nanocrystalline Square Cores | Ferrite Cores |
|---|---|---|
| Key Features | Much stronger magnetic conductivity, higher magnetic field tolerance, better temperature resistance | Low power loss at high frequencies, but weaker magnetic conductivity and poor high-temperature resistance |
| Drawbacks | Higher cost, slightly heavier than ferrite cores | Low saturation magnetic flux density, prone to "magnetic saturation" failure |
| Typical Uses | High-power, high-frequency equipment (e.g., EV motor controllers) | Small electronic components (e.g., router transformers, toy power supplies) |
In short, nanocrystalline cores are "performance leaders"-ideal for high-frequency, precision scenarios but costly. Other core types have their own advantages: silicon steel is affordable, and ferrite is low-cost, making them suitable for general scenarios with lower performance requirements.
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;
Gnee Iron Core Factory Overview
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General Manager
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Industries Served
Automobile Industry
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Transformer Applications
Our Mission
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