Nanocrystalline C Core for High Frequency Transformer and EMC Common Mode Choke

Sep 22, 2025

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Nanocrystalline C Core Product Description

Nanocrystalline C core is upgrade product of amorphous c core, with high saturation flux density, low coercivity, low core loss, low noise, higher frequency up to 20KHz, suitable for main power transformer, audio transformer, output inductor, boost PFC choke coil. Can replace ferrite cores, permalloy cores, silicon steel cores. Dimensions can be custom-made.

Nanocrystalline C Core Feature

Material: Fe-based nanocrystalline
Saturation flux density induction: 1.25T
Curie temperature(℃): 560
Stacking factor: >0.75
Saturation magnetostriction(*10^-6): <2
Resistivity (μΩ.cm): 130
Ribbon thickness: 25μm
Core shape: C type cut core

Nanocrystalline C Core Applications

>> High frequency transformer (frequency recommend 20-30KHz)
>> Solar inverter filter
>> PFC choke
>> Differential mode choke
>> Output filter
>> Audio transformer
>> High efficient transformer

Nanocrystalline C Core Parameters

Nanocrystalline C Core

Core dimensions						Mean path length	Effictive cross section	Weight
A	B	C	D	E	F	LFe	Ae	Wt
mm	mm	mm	mm	mm	mm	cm	cm2	g
10	11	33	20	31	53	11.6	1.56	146
11	13	30	20	35	52	11.7	1.72	166
11	13	40	20	35	62	13.7	1.72	192
11	13	40	25	35	62	13.7	2.15	240
11	13	50	25	35	72	15.7	2.15	272
11	13	50	30	35	72	15.7	2.57	326
13	15	56	25	41	82	17.9	2.54	366
13	15	56	30	41	82	17.9	3.04	439
13	15	56	35	41	82	17.9	3.04	426
16	20	70	25	52	102	22.7	3.12	567
16	20	70	30	52	102	22.7	3.74	680
16	20	70	40	52	102	22.7	4.99	884
16	20	70	45	52	102	22.7	5.62	994
19	25	83	35	63	121	27.2	5.19	1128
19	25	83	40	63	121	27.2	5.93	1260
19	25	83	50	63	121	27.2	7.41	1575
19	25	90	60	63	128	28.6	8.89	1987
22	35	85	50	79	129	30.6	8.58	2047
22	35	85	65	79	129	30.6	11.15	2662
25	40	85	55	90	135	32.5	10.73	2722
25	40	85	70	90	135	32.5	13.65	3464
25	40	85	85	90	135	32.5	16.58	4207
30	40	95	85	100	155	36.1	19.89	5602
33	40	105	85	106	171	39.0	21.88	6665

Other specifications are available according to customer's requirements.

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.

GNEE EC

30+

Types of Products

18k+

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

Meet Our Sales Manager

"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.

Edison Zhang

CEO

Kelly Zhang

General Manager

Alex Cao

Sales Manager

Industries Served

Automobile Industry

New Energy

Motor Applications

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

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