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:
1
High Power Density
Ideal for kW-range power transformation
2
Flexible Compatibility
Supports unipolar, push-pull, and bipolar inverter configurations
3
Reliable Build Quality
Encapsulated or epoxy-coated for mechanical integrity and safety
4
Tailored Designs
Custom shapes and power ratings available per application
5
Chemical Processing Equipment
Withstanding corrosion and high pressure
6
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.
ISO 45001
Occupational Health and Safety (OH&S) management systems
ISO 14001
Environmental Management Systems (EMS)
ISO 9001
Quality Management Systems (QMS)
IATF 16949
International Standard for Automotive Management Systems
AS 9100
Aerospace Quality Management System (QMS)
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