Nano-crystalline Core
▶ Application
Common-Mode and Normal-Mode Choke, Transformer
▶ Features and Specification
| Part Number | Nominal Core Dimensions (mm) | Case Dimensions (mm) |
Weight | Effictive Cross Section |
Mean Path Length |
AL(uH) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | ID | H | OD | ID | H | m(g) | AFe (cm²) | LFe (cm) | 10 KHz | 100 KHz | |
| NCR-161108 | 16.0 | 11.0 | 8.0 | 18.9 | 8.8 | 10.3 | 5.4 | 0.2 | 4.2 | 40.5 | 8.4 |
| NCR-211508 | 21.0 | 15.0 | 8.0 | 24.2 | 12.1 | 11.4 | 7.5 | 0.2 | 5.7 | 31.0 | 6.5 |
| NCR-261908 | 26.0 | 19.0 | 8.0 | 28.9 | 16.3 | 13.4 | 11.2 | 0.2 | 7.1 | 29.5 | 7.8 |
| NCR-281810 | 28.0 | 18.0 | 10.0 | 31.4 | 15.2 | 12.4 | 22.5 | 0.4 | 7.2 | 62.0 | 11.0 |
| NCR-302010 | 30.0 | 20.0 | 10.0 | 32.9 | 17.6 | 13.2 | 22.0 | 0.4 | 7.9 | 58.0 | 13.5 |
| NCR-322010 | 32.0 | 20.0 | 10.0 | 34.2 | 17.1 | 13.1 | 27.2 | 0.5 | 8.2 | 63.0 | 15.0 |
| NCR-402510 | 40.0 | 25.0 | 10.0 | 43.5 | 21.4 | 14.2 | 44.5 | 0.6 | 10.2 | 58.0 | 15.5 |
| NCR-402515 | 40.0 | 25.0 | 15.0 | 44.0 | 21.8 | 18.5 | 66.0 | 0.9 | 10.2 | 88.0 | 21.9 |
| NCR-503215 | 50.0 | 32.0 | 15.0 | 53.5 | 28.1 | 19.0 | 93.0 | 1.1 | 12.9 | 68.6 | 20.8 |
| NCR-503220 | 50.0 | 32.0 | 20.0 | 53.3 | 28.5 | 23.9 | 125.0 | 1.5 | 12.9 | 86.0 | 29.0 |
| NCR-513125 | 51.0 | 31.0 | 25.0 | 54.0 | 28.2 | 29.2 | 175.0 | 2.0 | 12.9 | 139.0 | 32.0 |
※ In the product line of NCR® Nanocrystalline-Cores, there is a type of high permeability material and high saturation-field.
This core has high impedance in wide frequency range.
* Weight : net weight of the core (tolerance +10% -10%)
** AL : nominal inductance for N=1 (tolerance +50% -30%)
The specification, size and characteristics, of cores can be customized.
This core has high impedance in wide frequency range.
* Weight : net weight of the core (tolerance +10% -10%)
** AL : nominal inductance for N=1 (tolerance +50% -30%)
The specification, size and characteristics, of cores can be customized.
Typical performance
▶ Physical Property
| Curie temperature Tc | 560 °C | Density d | 7.2 g/cm3 |
|---|---|---|---|
| Crystallization Tx | 510 °C | Resistivity | 130 un•cm |
| Saturation magnetostriction coefficient | <2 x 10-6 | Operating temperature range | -55~130 °C |
| Tensile strength | 1.5~2GPa | Hardness Hv | 900 kg/mm2 |
▶ Magnetic performance
| Product types | Without magnetic annealing | Annealing in transverse magnetic field |
|---|---|---|
| Initial magnetic permeability u | > 50x10⁴ | > 5x10⁴ |
| Maximum magnetic u | > 8x10⁴ | > 2x10⁴ |
| Saturation magnetic induction Bs | 1.25T | 1.25T |
| Residual magnetic induction Br | 0.5-0.8T | < 0.27 |
| Coercive force Hc | < 0.8A/m | < 1.8A/m |
| Loss P (20kHz 0.5T) | < 30w/kg | < 25w/kg |
| Loss P (100kHz 0.2T) | < 60w/kg | < 55w/kg |
| Change rate of loss (-55~125°C) | < 15% | < 15% |
| Change rate of loss (120°Cx200) | < 15% | < 15% |
▶ Different characteristics between nanocrystalline alloy and other soft magnetic materials
| Property index | Nanocrystalline alloy | Permalloy1J85 | Ferrite |
|---|---|---|---|
| Saturation magnetic induction Bs (T) | 1.25 | 0.75 | 0.5 |
| Residual magnetic induction (A/mBr (A/m) | 0.2~0.8 | --- | 0.2 |
| Coercive force (A/m) | < 2 | < 1 | 6 |
| Initial magnetic permeability ui | > 8x10⁴ | > 8x10⁴ | --- |
| Maximum magnetic permeability um | > 50x10⁴ | 60x10⁴ | > 2x10⁴ |
| Iron loss 20kHz 0.5T (W/kg) | < 30 | cannot use | |
| Iron loss 100kHz 0.2T (W/kg) | < 60 | cannot use | |
| Saturation magnetostriction | < 2x10-6 | < 2x10-6 | 4x10-6 |
| Resistivity μΩ•cm | 130 | 5G | 10⁴ |
| Curie temperature (°C) | 560 | 400 | < 200 |
▶ Typical performance curve
Notes:The magnetic performances listed above are just for reference, not as the basis for product acceptance.
Korea Yunlu Co., Ltd.
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