Nanocrystalline Cores for EMI EMC Filter Common Mode Chokes

vacuumschmelze vitroperm 500f Nanocrystalline Cores for common mode chokes

Amorphous and nanocrystalline technology is a very important technology in modern magnetic materials, cores and inductive components. King Magnetics has developed series of nanocrystalline cores for common mode chokes.

Nanocrystalline cores feature very high permeability over low frequency to high frequency up to 30Mhz. They are very suitable for common mode choke to be used as EMC filter to compress conducted common mode noise. Compared to traditional ferrite core, nanocrystalline core has a lot of advantages as high inductance, good filter effective, small size and volume, less turns of copper wire, lower power consumption and high efficiency.

Curie temperature of nanocrystalline core is about 560℃, much higher than traditional ferrite core about 200℃. High curie temperature make nanocrystalline core excellent thermal stability, and can continuous working at up to 120℃ environment.

Nanocrystalline cores is the best choice soft magnetic material for common mode choke. Our nanocrystalline cores used 25μm thickness second generation thin ribbons, which have much higher permeability at high frequency.

Features

Material: Fe-based Nanocrystalline core
Saturation flux density induction: 1.25T
Permeability @ 10KHz: > 50000
Permeability @ 100KHz: >10500
Curie temperature(℃): 560
Stacking factor: 0.78
Saturation magnetostriction(*10^-6): <2
Resistivity (μΩ.cm): 115
Ribbon thickness: 25μm
Core shapes: Toroidal core

Applications

>> EMC Filter
>> Switched mode power supply
>> Computer power supply
>> Communication and network power supply
>> Laser and X-ray power supply
>> Welding equipment and Electrical plating power supply
>> Solar energy equipment and Wind power generator
>> Household electrical appliance
>> Uninterruptable power supply (UPS)
>> Frequency converter
>> Inducted heating equipment
>> high-speed railway power supplies

Standard cores

 

Part No. Core dimensions Case dimensions Effictive
cross
section
Mean
path
length
Weight AL Minimum Value
od id h OD ID H AFe lFe mFe 10kHz 100kHz
mm mm mm mm mm mm cm2 cm g μH μH
KMN986545 9.8 6.5 4.5 11.3 5 6.1 0.06 2.6 1.1 14.2 3.0
KMN120805 12 8 5 14.4 6.5 7.0 0.08 3.1 1.6 15.6 3.7
KMN161006 16 10 6 17.9 8.1 8.1 0.14 4.1 4.16 25.9 5.2
KMN161008 16 10 8 17.8 8.4 9.9 0.19 4.1 5.5 34.6 6.9
KMN191510 19 15 10 21.2 13.5 12.3 0.16 5.3 6.0 22.0 4.4
KMN201208 20 12 8 21.7 10.8 9.9 0.25 5.0 9.1 37.4 7.5
KMN201210 20 12 10 22.6 10.5 12.5 0.31 5.0 11.4 46.8 9.4
KMN211308E* 21.3 13.6 8 22 13 8.8 0.24 5.5 9.5 33.0 6.6
KMN252010 25 20 10 28 17.2 13.2 0.20 7.1 10 20.8 4.2
KMN251610 25 16 10 28 14.0 13.1 0.35 6.4 16.4 41.1 8.2
KMN261610 25.5 16 10 28.3 13.9 13 0.39 6.6 18.6 44.6 8.9
KMN302010 30 20 10 33.2 17.8 13.3 0.39 7.9 22 37.4 7.5
KMN302015 30 20 15 33.6 17.8 17.8 0.59 7.9 33 56.2 11.2
KMN322010 32 20 10 34.4 18.1 13 0.47 8.2 28 43.2 8.6
KMN322015 32 20 15 34.6 17.9 18.2 0.70 8.2 42 64.8 13.0
KMN402515 40 25 15 44.4 22 18.8 0.88 10.2 65 64.8 13.0
KMN403215 40 32 15 44.9 28.8 18.8 0.47 11.3 38 31.2 6.2
KMN503220 50 32 20 53.8 28.5 24 1.40 12.9 131 68.5 16.4
KMN504020 50 40 20 53.6 37.1 23 0.78 14.1 80 34.7 8.3
KMN644025 64 40 25 67.4 37 29.3 2.34 16.3 277 90.0 21.6
KMN805020 80 50 20 83.8 46.6 25.0 2.34 20.4 346 72.0 17.3
KMN805025 80 50 25 83.5 47.2 28.8 2.93 20.4 433 90.0 21.6
KMN1008020 100 80 20 105 75 25 1.56 28.3 320 34.7 8.3
KMN1027625 102 76 25 107 71 30 2.54 27.9 514 57.0 13.7
KMN1309030 130 90 30 135 85 35 4.68 34.5 1172 85.1 20.4
KMN16013025 160 130 25 165 125 30 2.93 45.5 966 40.3 9.7
KMN17012025 170 120 25 175 115 30 4.88 45.5 1609 67.2 16.1
KMN20016030 200 160 30 207 153 37 4.50 56.5 1918 41.6 12.5

These cores are our standard products, we can also design and produce high performance cores according to customer’s requirements, including sizes, inductance and applications. We can help customers to select the best performance cores.

* Epoxy coated.
More epoxy coated nanocrystalline cores: http://www.kingmagnetics.com/epoxy-coated-nanocrystalline-core.html

 

 

Nanocrystalline Cores for EMI EMC Filter Common Mode Chokes