Amorphous C Cores
Sep 30, 2025
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Amorphous C Core Product Description
The Amorphous C-Core is engineered for use in medium-frequency transformers, chokes, and inverters where low core loss and high efficiency are critical. Built from ultra-thin amorphous metal strips, the C-shaped construction makes it easy to integrate with standard bobbins and windings - improving manufacturability and design flexibility.
Its excellent magnetic properties - including low coercivity and high initial permeability - make the Amorphous C-Core especially well-suited for switching power supplies, PV systems, and high-efficiency industrial electronics.
Amorphous C Core Feature
- Reduced Core Loss
Up to 70% lower core loss than traditional silicon steel, improving energy efficiency in demanding applications.
- Wide Operating Range
Performs across -40°C to +130°C, making it suitable for harsh or fluctuating thermal environments.
- High Saturation Flux
Saturation flux density of approximately 1.56 Tesla ensures reliable magnetic performance under load.
- Stable Processing
Precision cutting and annealing enhance dimensional stability and long-term magnetic consistency.
- Exceptional Permeability
Initial permeability exceeds 10,000, enabling effective signal transfer and shielding in compact designs.
- Flexible Sizing
Available in standard and fully custom dimensions to meet your specific transformer or choke design.
Amorphous C Core Application
- High-frequency transformers
Used in compact and lightweight systems requiring efficient energy conversion at high switching speeds.
- Power factor correction (PFC) circuits
Improves power efficiency and reduces harmonic distortion in AC-DC power supplies.
- Solar and EV inverter systems
Supports clean energy conversion with minimal losses in photovoltaic and electric vehicle applications.
- Low-noise power supply designs
Ideal for sensitive electronics requiring quiet, stable, and interference-free voltage regulation.
Amorphous C-core Specification
| a (mm) | ± | b (mm) ref | c (mm) ref | d (mm) | ± | e (mm) | ± | f (mm) | ± | Lm (cm) | Ac (cm²) | Wa (cm²) | WaAc (cm⁴) | Mass (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.5 | 0.5 | 5.4 | 16.4 | 20 | 0.5 | 16.4 | 1 | 27.4 | 1 | 5.8 | 0.98 | 0.9 | 0.9 | 41 |
| 9 | 0.5 | 10 | 32.8 | 15 | 0.5 | 28 | 1.5 | 50.8 | 1.5 | 11.2 | 1.20 | 3.3 | 3.9 | 97 |
| 9 | 0.5 | 11 | 33 | 15 | 0.5 | 29 | 1.5 | 51 | 1.5 | 11.5 | 1.20 | 3.6 | 4.4 | 99 |
| 10 | 0.5 | 11 | 33 | 20 | 0.5 | 31 | 1 | 53 | 2 | 11.8 | 1.78 | 3.6 | 6.5 | 150 |
| 11 | 0.8 | 13 | 30 | 20 | 0.5 | 35 | 1 | 52 | 2 | 11.9 | 1.96 | 3.9 | 7.6 | 167 |
| 11 | 0.8 | 13 | 37 | 20 | 0.5 | 35 | 1 | 59 | 2 | 13.1 | 1.96 | 4.8 | 9.4 | 184 |
| 11 | 0.8 | 13 | 40 | 20 | 0.5 | 35 | 1 | 62 | 2 | 13.7 | 1.96 | 5.2 | 10.2 | 193 |
| 11 | 0.8 | 14.5 | 38 | 20 | 0.5 | 36.5 | 1 | 60 | 2 | 13.6 | 1.96 | 5.5 | 10.8 | 191 |
| 8 | 0.5 | 14 | 31 | 40 | 1 | 30 | 1 | 47 | 1.5 | 11.2 | 2.85 | 4.3 | 12.4 | 228 |
| 11 | 0.8 | 13 | 40 | 25 | 0.5 | 35 | 1 | 62 | 2 | 13.7 | 2.45 | 5.2 | 12.7 | 241 |
| 11 | 0.8 | 13 | 50 | 25 | 0.5 | 35 | 1 | 72 | 2 | 15.7 | 2.45 | 6.5 | 15.9 | 276 |
| 11 | 0.8 | 13 | 50 | 30 | 0.5 | 35 | 1 | 72 | 2 | 15.7 | 2.94 | 6.5 | 19.1 | 331 |
| 11 | 0.8 | 13.6 | 50 | 30 | 0.5 | 35.6 | 1 | 72 | 2 | 15.8 | 2.94 | 6.8 | 20.0 | 334 |
| 11 | 0.8 | 13.3 | 50 | 30 | 0.5 | 35.3 | 1 | 72 | 2 | 15.8 | 2.94 | 6.7 | 20.0 | 333 |
| 11 | 0.8 | 13.3 | 50 | 30 | 0.5 | 35.3 | 1 | 72 | 2 | 15.8 | 2.94 | 6.7 | 20.0 | 333 |
| 11 | 0.8 | 14 | 50 | 30 | 0.5 | 36 | 1 | 72 | 2 | 15.8 | 2.94 | 7.0 | 20.2 | 336 |
| 11 | 0.8 | 17 | 32 | 40 | 1 | 39 | 1 | 54 | 2 | 12.9 | 3.92 | 5.4 | 21.3 | 363 |
| 10 | 0.5 | 17 | 32 | 40 | 1 | 39 | 1 | 52 | 2 | 12.6 | 3.50 | 5.4 | 19.0 | 322 |
| 13 | 0.8 | 15 | 56 | 25 | 0.5 | 41 | 1 | 82 | 2 | 17.9 | 2.89 | 8.4 | 24.3 | 372 |
| 13.5 | 0.8 | 16 | 56 | 25 | 0.5 | 43 | 1 | 83 | 2 | 18.3 | 3.00 | 9.0 | 27.0 | 394 |
| 16 | 1 | 40 | 45 | 20 | 0.5 | 72 | 1 | 77 | 2 | 21.7 | 2.85 | 18.0 | 51.3 | 443 |
| 16 | 1 | 20 | 50 | 20 | 0.5 | 52 | 1 | 82 | 2 | 18.7 | 2.85 | 10.0 | 28.5 | 382 |
| 8 | 0.5 | 20 | 54 | 40 | 1 | 36 | 1 | 70 | 2 | 17.0 | 2.85 | 10.8 | 30.8 | 347 |
| 10 | 0.5 | 15.4 | 53.6 | 30 | 0.5 | 35.4 | 1 | 73.6 | 2 | 16.6 | 2.67 | 8.3 | 22.0 | 318 |
| 13 | 0.8 | 15 | 56 | 30 | 0.5 | 41 | 1 | 82 | 2 | 17.9 | 3.47 | 8.4 | 29.2 | 447 |
| 13 | 0.8 | 15.2 | 56 | 30 | 0.5 | 41.2 | 1 | 82 | 2 | 18.0 | 3.47 | 8.5 | 29.5 | 448 |
| 13 | 0.8 | 15.6 | 56 | 30 | 0.5 | 41.6 | 1 | 82 | 2 | 18.1 | 3.47 | 8.7 | 30.3 | 450 |
| 13 | 0.8 | 15.3 | 56 | 30 | 0.5 | 41.3 | 1 | 82 | 2 | 18.0 | 3.47 | 8.6 | 30.0 | 451 |
| 13.5 | 0.8 | 16 | 56 | 30 | 0.5 | 43 | 1 | 83 | 2 | 18.3 | 3.64 | 9.0 | 32.6 | 478 |
| 10 | 0.5 | 20 | 58 | 40 | 1 | 40 | 1 | 78 | 2 | 18.4 | 3.56 | 11.6 | 41.3 | 460 |
| 15 | 0.8 | 30 | 60 | 25 | 0.5 | 60 | 1 | 90 | 2 | 22.4 | 3.34 | 18.0 | 60.1 | 536 |
| 13 | 0.8 | 15 | 61 | 30 | 0.5 | 41 | 1 | 87 | 2 | 18.9 | 3.47 | 9.2 | 31.8 | 472 |
| 16 | 1 | 20 | 43 | 30 | 0.5 | 52 | 1 | 75 | 2 | 17.3 | 4.27 | 8.6 | 37.0 | 530 |
| 13 | 0.8 | 15 | 56 | 35 | 0.5 | 41 | 1 | 82 | 2 | 17.9 | 4.05 | 8.4 | 34.0 | 521 |
Note: Customised sizes available.
GNEE Featured Products
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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Happy Clients
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;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
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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Edison Zhang
CEO
Kelly Zhang
General Manager
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Sales Manager
Industries Served
Automobile Industry
New Energy
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