1K107 Nanocrystalline C Shape Iron Core for Transformers

 

The nanocrystalline C-shape iron core is a C-shaped soft magnetic component made from iron-based nanocrystalline alloy ribbons (typical composition: Fe₇₃.₅Cu₁Nb₃Si₁₃.₅B₉) through winding, cutting, low-temperature annealing, and insulation treatment. It requires a magnetic yoke to form a closed magnetic circuit, and is suitable for medium-to-high frequency (50kHz-200kHz) scenarios. As a key component for transformers and inductors, it is especially ideal for equipment that needs post-operation maintenance.

 

 

nanocrystalline C-shape iron core Key Features

 

Low loss at medium-to-high frequencies: Iron loss is 18-35W/kg at 100kHz, only 1/5-1/8 that of silicon steel C-shape cores, resulting in low equipment temperature rise.

 

Flexible assembly & maintenance: Open structure allows coils to be slipped on later; faulty coils can be replaced individually without scrapping the entire assembly.

 

Wide temperature resistance & durability: Operable at -50℃-150℃, with magnetic performance attenuation ≤3% over 10 years. It resists vibration and has excellent insulation (insulation resistance ≥100MΩ).

 

Adjustable magnetic circuit: Replacing magnetic yokes of different types enables adjustment of magnetic resistance and inductance, adapting to various power requirements.

 

 

nanocrystalline C core Comparisons

 

1. Same Structure (C-shape) with Different Materials

Dimension	Nanocrystalline C-shape Core	Silicon Steel C-shape Core (30Q130)	Ferrite C-shape Core (Mn-Zn)
Operating Frequency	50kHz-200kHz	50Hz-1kHz	100kHz-1MHz
Iron Loss (P₁/100k)	18-35W/kg	120-180W/kg	10-20W/kg (better at ultra-high frequencies)
Saturation Magnetic Induction	1.2-1.5T	1.8-2.0T	0.3-0.5T
Cost (Relative Value)	2.8-3.5	1.0	1.5-2.2
Applicable Scenarios	Medium-to-high frequency, high-efficiency equipment	Power frequency, high-power equipment	Ultra-high frequency, low-power equipment

 

 

2. Same Material (Nanocrystalline) with Different Structures

Dimension	Nanocrystalline C-shape Core	Nanocrystalline Toroidal Core	Nanocrystalline E-shape Core
Magnetic Circuit Type	Open (requires yoke)	Closed	Closed (E+I splicing)
Winding Convenience	High (coils slipped on later)	Low (needs specialized winding machine)	Medium (adapts to automated winding)
Magnetic Leakage Rate	5%-8% (with yoke)	≤3%	≤5%
Power Adaptability	Medium-high power (5-50kW)	Small-medium power (1-20kW)	Medium power (3-30kW)

nanocrystalline C core specification

Core Build		Window Width		Core Height		Core Width		Core Length
a(mm)	±	b(mm)	c(mm)	d(mm)	±	e(mm)	±	f(mm)	±
9	0.5	10	32.8	15	0.5	28	1	50.8	1.25
10	0.5	11	33	20	0.5	31	1	53	2
11	0.5	13	30	20	0.5	35	1	52	2
11	0.5	13	40	20	0.5	35	1	62	2
11	0.5	13	40	25	0.5	35	1	62	2
11	0.8	13	50	25	0.5	35	1	72	2
11	0.8	13	50	30	0.5	35	1	72	2
13	0.8	15	56	25	0.5	41	1	82	2
13	0.8	15	56	30	0.5	41	1	82	2
13	0.8	15	56	35	0.5	41	1	82	2
16	0.8	20	70	25	0.5	52	1	102	3
16	1	20	70	30	0.5	52	1	102	3
16	1	20	70	40	0.5	52	1	102	3
16	1	20	70	45	1	52	1	102	3
19	1	25	83	35	1	63	1	121	3
19	1	25	83	40	1	63	1	121	3
19	1	25	83	50	1	63	1	121	3
19	1	25	90	60	1	63	1	128	3
22	1	35	85	50	1	79	1	129	4
22	1	35	85	65	1	79	1	129	4
25	1	40	85	55	1	90	1	135	4
25	1	40	85	70	1	90	1	135	4
25	1	40	85	85	1.5	90	1	135	4
30	1	40	85	85	1.5	100	1	155	4
33	1	40	105	85	1.5	106	1	171	5
Note: Additional sizes can be customized to meet specific customer requirements.