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EMI Cores

KEMET EMI Cores provide high-frequency noise suppression in electronic circuits. There are two ferrite material options for KEMET EMI Cores, namely Nickel-Zinc (NiZn) and Manganese Zinc (MnZn). The NiZn core material is typically effective for theMHz band range (FM-band frequencies), whereas the MnZn core material is typically effective for the kHz band range (AM-band frequencies). The MnZn core material offers a lower resistance compared to the NiZn and hence adequate insulation is required before use (recommended to measure the actual frequency-range effectiveness in the target application). The effective frequency range varies depending on core shape, size, and the number of turns.

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Types of Passive Components

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Results: 117

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Part #

Ferrite Cable Cores 4.8x2.4mm 300MHz Ni-Zn Bare

B-20L-48B-L
KEMET
1: 0.198 CHF
30 995In Stock

Mfr. Part No.
B-20L-48B-L

Mouser Part No
80-B-20L-48B-L

KEMET

Ferrite Cable Cores 4.8x2.4mm 300MHz Ni-Zn Bare

Datasheet

30 995In Stock

0.198 CHF

0.108 CHF

0.082 CHF

0.073 CHF

View

Min.: 1
Mult.: 1

Ferrite Clamp On Cores 53x19mm 10MHz Mn-Zn 85C

ESD-SR-S47M
KEMET
1: 11.23 CHF
394In Stock

Mfr. Part No.
ESD-SR-S47M

Mouser Part No
80-ESD-SR-S47M

KEMET

Ferrite Clamp On Cores 53x19mm 10MHz Mn-Zn 85C

Datasheet

394In Stock

11.23 CHF

7.02 CHF

6.47 CHF

6.43 CHF

5.56 CHF

Min.: 1
Mult.: 1

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

B-20L-25
KEMET
1: 0.207 CHF
52 537In Stock

Mfr. Part No.
B-20L-25

Mouser Part No
80-B-20L-25

KEMET

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

Datasheet

52 537In Stock

0.207 CHF

0.132 CHF

0.094 CHF

0.087 CHF

View

Min.: 1
Mult.: 1

Ferrite Cable Cores 56x2mm Split Core Ni-Zn for Flat Cable

ESD-FPD-40-1
KEMET
1: 7.72 CHF
366In Stock

Mfr. Part No.
ESD-FPD-40-1

Mouser Part No
80-ESD-FPD-40-1

KEMET

Ferrite Cable Cores 56x2mm Split Core Ni-Zn for Flat Cable

Datasheet

366In Stock

7.72 CHF

4.39 CHF

3.80 CHF

3.50 CHF

Min.: 1
Mult.: 1

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

B-20L-34
KEMET
1: 0.278 CHF
27 395In Stock

Mfr. Part No.
B-20L-34

Mouser Part No
80-B-20L-34

KEMET

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

Datasheet

27 395In Stock

0.278 CHF

0.15 CHF

0.114 CHF

0.10 CHF

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Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 6mm

ESD-R-12D
KEMET
1: 1.61 CHF
1 895In Stock

Mfr. Part No.
ESD-R-12D

Mouser Part No
80-ESD-R-12D

KEMET

Ferrite Toroids / Ferrite Rings 6mm

Datasheet

1 895In Stock

1.61 CHF

0.959 CHF

0.848 CHF

0.615 CHF

0.556 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm

ESD-R-38D-B
KEMET
1: 8.14 CHF
1 721In Stock

Mfr. Part No.
ESD-R-38D-B

Mouser Part No
80-ESD-R-38D-B

KEMET

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm

Datasheet

1 721In Stock

8.14 CHF

4.67 CHF

4.05 CHF

3.79 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 14mm

ESD-R-25
KEMET
1: 1.76 CHF
273In Stock
300Expected 24/09/2026

Mfr. Part No.
ESD-R-25

Mouser Part No
80-ESD-R-25

KEMET

Ferrite Toroids / Ferrite Rings 14mm

Datasheet

273In Stock

300Expected 24/09/2026

1.76 CHF

1.05 CHF

0.931 CHF

0.698 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 29x12.7x16mm 300MHz Ni-Zn 120C

ESD-R-25N-H
KEMET
1: 2.73 CHF
928In Stock

Mfr. Part No.
ESD-R-25N-H

Mouser Part No
80-ESD-R-25N-H

KEMET

Ferrite Toroids / Ferrite Rings 29x12.7x16mm 300MHz Ni-Zn 120C

Datasheet

928In Stock

2.73 CHF

1.60 CHF

1.39 CHF

1.02 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 15x5x9mm 10MHz Mn-Zn 120C

ESD-R-12M-H
KEMET
1: 1.12 CHF
2 496In Stock

Mfr. Part No.
ESD-R-12M-H

Mouser Part No
80-ESD-R-12M-H

KEMET

Ferrite Toroids / Ferrite Rings 15x5x9mm 10MHz Mn-Zn 120C

Datasheet

2 496In Stock

1.12 CHF

0.597 CHF

0.422 CHF

0.366 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 19x10.7x5.3mm Ni-Zn Coated

ESD-R-19E-1
KEMET
1: 3.10 CHF
615In Stock

Mfr. Part No.
ESD-R-19E-1

Mouser Part No
80-ESD-R-19E-1

KEMET

Ferrite Toroids / Ferrite Rings 19x10.7x5.3mm Ni-Zn Coated

Datasheet

615In Stock

3.10 CHF

1.81 CHF

1.45 CHF

1.19 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

ESD-R-19B
KEMET
1: 2.26 CHF
673In Stock

Mfr. Part No.
ESD-R-19B

Mouser Part No
80-ESD-R-19B

KEMET

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

Datasheet

673In Stock

2.26 CHF

1.33 CHF

1.17 CHF

0.848 CHF

0.824 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 61x33.2x25mm 10MHz Mn-Zn 120C

ESD-R-57M-H
KEMET
1: 16.65 CHF
60In Stock

Mfr. Part No.
ESD-R-57M-H

Mouser Part No
80-ESD-R-57M-H

KEMET

Ferrite Toroids / Ferrite Rings 61x33.2x25mm 10MHz Mn-Zn 120C

Datasheet

60In Stock

16.65 CHF

8.85 CHF

8.84 CHF

8.82 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 61x33.2x25mm 300MHz Ni-Zn 120C

ESD-R-57N-H
KEMET
1: 17.47 CHF
57In Stock

Mfr. Part No.
ESD-R-57N-H

Mouser Part No
80-ESD-R-57N-H

KEMET

Ferrite Toroids / Ferrite Rings 61x33.2x25mm 300MHz Ni-Zn 120C

Datasheet

57In Stock

17.47 CHF

9.12 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Coated Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H

ESD-R-25SR-P
KEMET
1: 4.53 CHF
576In Stock

Mfr. Part No.
ESD-R-25SR-P

Mouser Part No
80-ESD-R-25SR-P

KEMET

Ferrite Toroids / Ferrite Rings Coated Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H

576In Stock

4.53 CHF

2.61 CHF

2.33 CHF

Min.: 1
Mult.: 1

Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 7x37.4x19.6x20.3mm

ESD-SR-190736X-R1
KEMET
1: 3.06 CHF
1 052In Stock

Mfr. Part No.
ESD-SR-190736X-R1

Mouser Part No
80-ESD-SR-190736X-R1

KEMET

Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 7x37.4x19.6x20.3mm

Datasheet

1 052In Stock

3.06 CHF

1.79 CHF

1.57 CHF

1.50 CHF

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

ESD-R-220814XH-R1
KEMET
1: 1.80 CHF
607In Stock

Mfr. Part No.
ESD-R-220814XH-R1

Mouser Part No
80-ESD-R-220814XH-R1

KEMET

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

607In Stock

1.80 CHF

1.07 CHF

0.864 CHF

0.817 CHF

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Bare,Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability 10H

ESD-R-25SH
KEMET
1: 2.02 CHF
682In Stock

Mfr. Part No.
ESD-R-25SH

Mouser Part No
80-ESD-R-25SH

KEMET

Ferrite Toroids / Ferrite Rings Bare,Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability 10H

682In Stock

2.02 CHF

1.19 CHF

1.05 CHF

1.04 CHF

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroidal,Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H

ESD-R-25SR
KEMET
1: 3.58 CHF
250In Stock

Mfr. Part No.
ESD-R-25SR

Mouser Part No
80-ESD-R-25SR

KEMET

Ferrite Toroids / Ferrite Rings Toroidal,Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H

250In Stock

3.58 CHF

2.07 CHF

1.83 CHF

1.76 CHF

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

ESD-R-291216XH-R1
KEMET
1: 2.42 CHF
319In Stock

Mfr. Part No.
ESD-R-291216XH-R1

Mouser Part No
80-ESD-R-291216XH-R1

KEMET

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

319In Stock

2.42 CHF

1.42 CHF

1.24 CHF

1.12 CHF

1.11 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroidal w/case Nanocrystal Low Frequency 150kHz Ring -40/+120C UL94 V-0

ESD-R-412119H-NC23
KEMET
1: 14.10 CHF
85In Stock
120Expected 27/04/2027

Mfr. Part No.
ESD-R-412119H-NC23

Mouser Part No
80-ESD-R-412119HNC23

KEMET

Ferrite Toroids / Ferrite Rings Toroidal w/case Nanocrystal Low Frequency 150kHz Ring -40/+120C UL94 V-0

85In Stock

120Expected 27/04/2027

14.10 CHF

8.88 CHF

8.87 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

ESD-R-421617XH-R1
KEMET
1: 4.59 CHF
236In Stock

Mfr. Part No.
ESD-R-421617XH-R1

Mouser Part No
80-ESD-R-421617XH-R1

KEMET

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

236In Stock

4.59 CHF

2.41 CHF

2.09 CHF

2.08 CHF

2.07 CHF

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal,Mn-Zn -40/+120C UL94 V-0 HR1

ESD-R-512419XH-R1
KEMET
1: 6.43 CHF
78In Stock

Mfr. Part No.
ESD-R-512419XH-R1

Mouser Part No
80-ESD-R-512419XH-R1

KEMET

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal,Mn-Zn -40/+120C UL94 V-0 HR1

78In Stock

6.43 CHF

3.35 CHF

3.34 CHF

3.31 CHF

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

ESD-R-613325XH-R1
KEMET
1: 15.51 CHF
71In Stock

Mfr. Part No.
ESD-R-613325XH-R1

Mouser Part No
80-ESD-R-613325XH-R1

KEMET

Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1

71In Stock

15.51 CHF

10.21 CHF

10.11 CHF

Min.: 1
Mult.: 1

Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 5x28x14.4x14.2mm

ESD-SR-130527X-R1
KEMET
1: 2.17 CHF
1 224In Stock

Mfr. Part No.
ESD-SR-130527X-R1

Mouser Part No
80-ESD-SR-130527X-R1

KEMET

Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 5x28x14.4x14.2mm

Datasheet

1 224In Stock

2.17 CHF

1.27 CHF

1.00 CHF

0.931 CHF

View

Min.: 1
Mult.: 1