Nanocrystalline cores

Inverter Nano Core

Compact & Robust Cores for Inverter Welding Systems

The Ultralight Powerhouse of Inverter Technology

Engineered for extreme power density and thermal stability, our Nanocrystalline cores provide the compact, high-efficiency energy conversion required for the most demanding professional IGBT inverter welding machines and industrial power sources.

The Definite Choice for Scalable, High-Frequency NANO Cores

Produced with precision on automatic core winding machines, these nanocrystalline cores feature a ribbon thickness of 25–35 microns, heat-treated in a controlled atmosphere to ensure consistent quality. Every batch is tested for chemical composition by Spark-OES / wet analysis / Gas analysis.

Key Features

Parameter	Specification
Material	Fe-based Nanocrystalline
Saturation Flux Density	1.25 T
Key Benefit	Reduces transformer volume versus traditional ferrites
Permeability	>20,000 @ 10 KHz
Efficiency Benefit	Improves efficiency and lowers copper losses
Coercivity & Core Loss	Low
Thermal Performance	Cooler operation even at high power
Operating Temperature Range	–40°C to +130°C
Form Factor	Toroidal Core Design
Stacking Factor	0.78
Curie Temperature	560°C
Saturation Magnetostriction	< 2 × 10⁻⁶
Ribbon Thickness	25 μm
Resistivity	90 μΩ·cm

Core Characteristics

Used in industries that demand high mechanical strength and corrosion resistance:

High Power Density

Ideal for kW-range power transformation

Flexible Compatibility

Supports unipolar, push-pull, and bipolar inverter configurations

Reliable Build Quality

Encapsulated or epoxy-coated for mechanical integrity and safety

Tailored Designs

Custom shapes and power ratings available per application

Chemical Processing Equipment

Withstanding corrosion and high pressure

Heavy Machinery

Load-bearing components with heat-treated resilience

Technical Specifications

Comparison: Nanocrystalline vs. Ferrite Cores

Properties	Nanocrystalline cores	Ferrite cores
Saturation Flux density(T)	1.25	0.5
Remanence (T) (20KHz)	<0.3	0.2
Core loss (20KHz/0.2T) (W/Kg)	<3.4	7.5
Core loss (20KHz/0.5T) (W/Kg)	<30	can not use
Core loss (50KHz/0.3T) (W/Kg)	<40	can not use
Permeability (20KHz)	>20,000	2000
Coercivity (A/m)	<2.0	6
Saturation magnetostriction(*10^-6)	<2	4
Resistivity (μΩ.cm)	90	10^6
Curie temperature(℃)	560	<200
Stacking factor	>0.75	n/a

Core Dimensions & Power Capacity

Note: Power @ 20kHz is for reference only. Actual performance depends on specific design parameters.

Part No.	Core dimensions			Case dimensions			Effective Cross section	Mean Path length	Weight	Power @ 20KHz	Case type*
	od	id	h	OD	ID	H	AFe	lFe	mFe	P
	mm	mm	mm	mm	mm	mm	cm2	cm	g	KW
W-N20-P-278-R0	50	32	20	53.8	28.5	24	1.4	12.9	131	0.5-1	O
W-N20-P-279-R0	64	40	20	68.2	37	23.5	1.87	16.3	222	1-3	O
W-N50-P-180-R0	80	50	25	83.5	47.2	28.8	2.93	20.4	433	3-5	O
W-N50-P-180-R0	80	50	25	83.5	47.2	28.8	2.93	20.4	433	3-5	Ω
W-N20-P-16-R0	100	60	20	106	55	25	3.12	25.1	568	5-7	O
W-N20-P-16-R0	100	60	20	106	55	25	3.12	25.1	568	5-7	Ω
W-N20-P-280-R0	120	70	20	125	65	25	3.9	29.8	843	7-10	O
W-N20-P-280-R0	120	70	20	125	65	25	3.9	29.8	843	7-10	Π

Trust Reliability & Quality

With over 65 years of manufacturing excellence, PML delivers NANO Core High-Efficiency Transformer Cores trusted by OEMs and Tier 1 suppliers across sectors demanding robust performance.