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NANOCRYSTALLINE VITROPERM CORES WITH EPOXY RESIN COATING FOR COMMON MODE CHOKES

Common Mode Chokes with toroidal tape wound cores of VITROPERM® allow the effective attenuation of asymmetrical and conducted high frequency noise. The high permeability of the nanocrystalline core material achieves superior characteristics at low and middle frequencies, as well as in the high frequency range, when an optimized winding arrangement is chosen. In comparison to conventional ferrite, advantages over the entire frequency range are obtained. Further information is available in our application note EMC Products based on Nanocrystalline VITROPERM..

Our VITROPERM cores are available with different AL-levels for many core sizes. Thus, saturation-resistant solutions are available for various fields of applications. If the common mode currents exceed the saturation currents (Icm) of the cores or chokes, cores with higher saturation resistance must be used. High al values (high μ) are more suitable for typical single-phase applications with low unbalanced current (e.g. switched-mode power supplies), while cores with lower AL values are often used in 3-phase applications with high unbalanced currents (e.g. frequency converters with long motor cables).

Although the epoxy resin coating is suitable for direct winding, we recommend additional insulation between core and winding for enhanced insulation requirements. The epoxy resin is suitable for continuous operational temperatures of up to 120 °C and complies with the UL94-V0 standard (UL file number: E214934), class A (105 °C).

VITROPERM cores in plastic cases are listed in the table Nanocrystalline VITROPERM cores in plastic casing.

We recommend to examine the theoretical calculations experimentally. To examine theoretical calculations experimentally, VAC offers a special sample kit consisting of selected cores Core Sample Kit VITROPERM.

The main areas of application are:

  • EMC filters
  • Switched -mode power supplies (SMPS), Power supplies
  • Solar inverters
  • Uninterruptible power supplies (UPS)
  • Welding equipment
  • Wind generators
  • Frequency converters
  • Inductive cooking

VAC-Product

nominal core dimensions

limiting dimensions (incl. coating)

iron cross section

mean path length

weight

AL nominal

saturation current Icm**, typical

 

da x di x h

Da

Di

H

AFe

lFe

mFe

10 kHz

100 kHz

10 kHz

100kHz

 

mm x mm x mm

mm

mm

mm

cm2

cm

g

µH

A

T60004-L2016-W620

16 x 12.5 x 6

17.8

10.7

8.0

0.08

4.5

2.6

15.0

4.8

0.5

0.63

T60004-L2016-W619

6.0

3.9

1.1

1.7

T60004-L2022-W867

22 x 17 x 6

24.0

15.2

8.0

0.12

6.1

5.4

16.4

4.3

0.6

0.86

T60004-L2022-W868

22 x 17 x 10

24.0

15.2

12.0

0.20

6.1

9,0

27.4

5.3

0.4

0.86

T60004-L2025-W622

25 x 20 x 10

27.3

17.5

12.3

0.19

7.1

9.9

22.5

7.2

0.7

0.99

T60004-L2025-W621

9.0

5.8

1.7

2.8

T60004-L2030-W676

30 x 25 x 15 

32.3

22.7

17.5

0.27

8.6

17.4

26.5

8.5

0.9

1.2

T60004-L2030-W911

30 x 20 x 10

32.5

17.8

12.5

0.40

7.9

23.1

56.0

13.4

0.6

0.87

T60004-L2040-W624

40 x 32 x 15

42.3

29.1

17.8

0.44

11.3

36.0

32.5

10.3

1.1

1.6

T60004-L2040-W623

13.0

8.4

2.8

4.4

T60004-L2045-W886

45 x 32 x 15

47.3

29.8

17.8

0.71

12.1

63.3

19.7

12.8

3.0

4.7

T60004-L2050-W626

50 x 40 x 20

52.3

37.1

22.8

0.73

14.1

76.0

43.0

13.8

1.4

2.0

T60004-L2050-W625

17.0

11.0

3.6

5.6

T60004-L2050-W583

11.2

10.0

5.5

7.1

T60004-L2063-W627

63 x 50 x 20

65.5

46.6

22.8

0.95

17.8

124.0

18.0

11.7

4.5

6.9

T60004-L2063-W721

13.5

12.1

6.9

8.9

T60004-L2080-W628

80 x 63 x 20

83.0

59.5

22.8

1.24

22.5

205.0

18.5

12.0

5.7

8.7

T60004-L2080-W722

12.0

10.8

8.7

11.0

T60004-L2100-W629

100 x 80 x 20

104.0

75.0

23.0

1.46

28.3

303.0

17.3

11.2

7.1

11.0

T60004-L2100-W723

11.2

10.0

11.0

14.0

T60004-L2130-W567

130 x 100 x 25

134.5

95.0

 

28.5

2.85

36.1

757.0

50.0

19.4

3.4

6.2

T60004-L2130-W630

2.74

727.0

25.4

16.5

9.1

14.0

T60004-L2130-W587

2.74

727.0

16.4

14.8

14.0

18.0

T60004-L2160-W631

160 x 130 x 25

165.0

125.0

28.5

2.74

45.6

917.0

20.2

13.1

11.0

18.0

T60004-L2160-W720

13.0

11.7

18.0

23.0

T60004-L2194-V105

194 x 155 x 25 

200.0

149.0

28.5

3.71

54.8

1490.0

45.0

14.7

4.9

9.1

T60004-L2194-W908

15.0

13.2

21.0

27.0

AL = inductance for N = 1 (tolerance +45 % / -25 %)
Icm : the listed saturation currents are guidelines, only. They are calculated for nominal core dimensions at room temperature and for approx. 70 % saturation flux density. 

Further information can be found here:

General Information
Application note (brochure)
RoHS information

Nanocrystalline Cores
Cores in plastic casing
Core Sample Kit VITROPERM
Core stack assemblies

Chokes
Chokes

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Last update: 07.11.2016