Nanocrystalline Common Mode Choke | EMI Suppression Solutions

Introduction

Product Overview:

The nanocrystalline common mode choke (CMC) is a high-performance electromagnetic component designed to suppress common-mode interference (EMI) in electronic equipment. By winding signal or power lines on high-permeability nanocrystalline cores, the CMC effectively blocks common-mode currents, ensuring stable power quality and device reliability.
Our nanocrystalline CMCs are widely used in industrial, automotive, and home electronic applications, offering excellent high-frequency performance, low loss, compact size, and strong EMI immunity.
Applications
Home Appliances: Washing machines, air conditioners, air purifiers, coffee makers, bread makers
Industrial Electronics: SMPS, power supplies, inverters
Automotive Electronics: DC/DC converters for hybrid and electric vehicles
Renewable Energy Equipment: Solar inverters, wind generators
General Power Systems: UPS, frequency converters, welding machines

Features

Industrial Grade Nanocrystalline CMC

Application Areas: Switched-mode power supplies (SMPS), solar inverters, frequency converters, welding equipment, wind generators, and UPS systems Efficient Common-Mode Noise Suppression: High impedance to unwanted high-frequency noise via magnetic flux in the core Customization Support: OEM services, sample supply, and project design support Versatile Applications: Suitable for home appliances, power supplies, and various industrial electronic devices

Automotive Grade Nanocrystalline CMC

Operating Temperature Range: -40°C to +115°C, with short-term operation up to 160°C
Rated Insulation Voltage: Ui = 525 Vrms (functional insulation, pollution degree 1)
AEC-Q200 Certified: Meets automotive electronic reliability standards
Technical Cleanliness Design: Compliant with VDA 19 Part 2
Optimized for DC/DC Converters in hybrid and electric vehicles

Core Advantages

High permeability for enhanced inductance and EMI suppression
Low loss and compact design save PCB space and improve efficiency
Strong EMI immunity ensures stable device operation
Excellent frequency characteristics provide high impedance at unwanted frequencies
High thermal stability suitable for high-temperature and demanding applications

Applications

Home Appliances: Washing machines, air conditioners, air purifiers, coffee makers, bread makers
Industrial Electronics: SMPS, power supplies, inverters
Automotive Electronics: DC/DC converters for hybrid and electric vehicles
Renewable Energy Equipment: Solar inverters, wind generators
General Power Systems: UPS, frequency converters, welding machines

Specification

	Nanocrystalline core	Ferrite core
Saturation magnetic induction Bs (T)	≥1.20T	0.4
Curit temperature (°C)	≥560	170
Saturation magnetostriction coefficient)	<2	4
Continuous working temperature range	-55—130℃	<80°C
Initial permeability (μ)	20000--160000	2000
Coercivity A/m	<1.6	30
High frequency loss P(20KHZ.0.2T)	3.4	7.5

Representative model

Bare core size	Core size with plastic case(mm)	Effective cross-sectional area	Effective magnetic path length	U×10³
OD×ID×HT	OD×ID×HT	Afe(cm²)	Lfe(cm)	10KHZ	100KHZ
25×16×10	28×13.8×12.5	0.35	6.4	65～97	12～19
25×20×10	27.8×17×13.3	0.2	7.1	60～119	15～32
30×20×10	33.5×17.8×13.5	0.39	7.9	72～135	16～33
30×20×15	34.5×17.8×18.6	0.59	7.9	72～135	16～34
32×20×10	37.5×16×14	0.47	8.2	73～115	15～29
40×32×15	45×28.5×19	0.47	11.3	72～135	16～34
50×40×20	53×37×23	0.78	14.1	50～97	15～30
65×50×25	69×46×28.5	1.46	18.1	49～98	14～31
80×50×20	85×45×24.5	2.34	20.4	50～110	10～30
102×76×25	108.5×69.5×30.8	2.54	28	50～100
7.2×4.5×3.0	8.0×3.5×4.5	0.03	1.81	10
9.8×6.5×4.5	11.2×5.1×5.7	0.06	2.56	17
10×6.5×5.0	11.2×5.1×6.5	0.07	2.59	20
12×8.0×4.5	13.5×6.5×6.5	0.07	3.14	22
14×10×5.0	15.5×8.5×6.8	0.08	3.77	20
16×10×8	17.2×8.5×10	0.19	4.08	35
20×12×8	22.3×10×10.3	0.25	5.03	39
20×12×10	22.3×10×12.3	0.25	5.03	40
16×12.5×6	17.8×10.7×8.0	0.08	4.48	14
26×16×10	27.5×14.0×12.5	0.39	6.6	55
28×18×15	30.2×16.0×17.6	0.59	7.23	50
25×20×10	27.8×18×12.7	0.2	7.07	25
30×20×15	33.1×17.8×17.5	0.59	7.85	55
32×20×10	34×17.8×12.5	0.47	8.17	50
40×25×10	42.5×22.5×13.0	0.59	10.21	45
40×25×15	43.2×21.9×18.9	0.88	10.21	60
40×32×15	44.3×29.2×18.6	0.47	11.31	40
50×32×15	53.2×29.0×18.2	1.05	12.88	50
50×32×20	53.2×29.5×23.5	1.4	12.88	70
50×40×20	53.5×36.5×22.8	0.78	14.14	30
50×40×25	53.4×36.2×28.3	0.98	14.14	62
60×40×20	63×37×24	1.56	15.71	70
64×40×20	67×37×24	1.87	16.34	80
65×50×25	68×47×29	1.46	18.06	60
80×50×20	84×47×24	2.34	20.42	80
120×70×0	125.1×65.5×36.1	5.85	29.85	150
100×80×20	76×103.6×23.7	1.56	28.27	45
125×90×25	129.5×85.4×30	3.41	33.77	90
130×100×25	134.5×95×28.5	2.93	36.13	75
160×130×30	165×125×33.5	3.51	45.55	70
220×190×30	227.5×184×35.7	3.51	64.4	50