Amorphous Core

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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.

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.

Advanced Technical Development and Constant Innovation, Stringent Quality Assurance and Customer Satisfaction

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