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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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Part #

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

B-20L-25
KEMET
1: Rp3.302
52.581In Stock

Mfr. Part No.
B-20L-25

Mouser Part No
80-B-20L-25

KEMET

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

Datasheet

52.581In Stock

Rp3.302

Rp1.981

Rp1.743

Rp1.725

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Min.: 1
Mult.: 1

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

ESD-FPD-40-1
KEMET
1: Rp178.507
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

Rp178.507

Rp97.601

Rp84.208

Rp77.971

Rp77.787

Min.: 1
Mult.: 1

Ferrite Cable Cores Solid Core Flat 68.6mm Cable

ESD-FPL-50
KEMET
1: Rp93.381
899In Stock

Mfr. Part No.
ESD-FPL-50

Mouser Part No
80-ESD-FPL-50

KEMET

Ferrite Cable Cores Solid Core Flat 68.6mm Cable

Datasheet

899In Stock

Rp93.381

Rp53.937

Rp47.149

Rp45.865

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Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 25.5mm

ESD-R-47
KEMET
1: Rp117.598
1.020In Stock
100Expected 02/06/2026

Mfr. Part No.
ESD-R-47

Mouser Part No
80-ESD-R-47

KEMET

Ferrite Toroids / Ferrite Rings 25.5mm

Datasheet

1.020In Stock

100Expected 02/06/2026

Rp117.598

Rp61.276

Rp57.240

Rp53.570

View

Min.: 1
Mult.: 1

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

B-20L-34
KEMET
1: Rp6.421
28.395In 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

28.395In Stock

Rp6.421

Rp3.486

Rp2.642

Rp2.110

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Min.: 1
Mult.: 1

Ferrite Cable Cores 14x1mm Bare Ni-Zn for Flat Cable

ESD-FPL-18-8
KEMET
1: Rp63.844
1.145In Stock

Mfr. Part No.
ESD-FPL-18-8

Mouser Part No
80-ESD-FPL-18-8

KEMET

Ferrite Cable Cores 14x1mm Bare Ni-Zn for Flat Cable

Datasheet

1.145In Stock

Rp63.844

Rp37.426

Rp32.839

Rp32.656

View

Min.: 1
Mult.: 1

Ferrite Clamp On Cores 64x24mm 10MHz Mn-Zn 85C

ESD-SR-S57M
KEMET
1: Rp400.493
264In Stock

Mfr. Part No.
ESD-SR-S57M

Mouser Part No
80-ESD-SR-S57M

KEMET

Ferrite Clamp On Cores 64x24mm 10MHz Mn-Zn 85C

Datasheet

264In Stock

Rp400.493

Rp217.767

Min.: 1
Mult.: 1

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

B-20L-48B-L
KEMET
1: Rp4.587
33.385In 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

33.385In Stock

Rp4.587

Rp2.495

Rp1.908

Rp1.688

View

Min.: 1
Mult.: 1

Ferrite Cable Cores 11x8mm Bare Ni-Zn for Flat Cable

ESD-FPL-14.5-3
KEMET
1: Rp12.659
1.336In Stock

Mfr. Part No.
ESD-FPL-14.5-3

Mouser Part No
80-ESD-FPL-14.5-3

KEMET

Ferrite Cable Cores 11x8mm Bare Ni-Zn for Flat Cable

Datasheet

1.336In Stock

Rp12.659

Rp8.513

Rp6.476

Rp5.651

View

Min.: 1
Mult.: 1

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

ESD-R-19E-1
KEMET
1: Rp71.733
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

Rp71.733

Rp41.829

Rp33.390

Rp26.418

Min.: 1
Mult.: 1

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

ESD-R-12M-H
KEMET
1: Rp26.051
2.498In 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

2.498In Stock

Rp26.051

Rp13.594

Rp9.760

Rp9.246

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 39.5x18x14mm Mn-Zn Coated

ESD-R-38-P
KEMET
1: Rp173.186
154In Stock

Mfr. Part No.
ESD-R-38-P

Mouser Part No
80-ESD-R-38-P

KEMET

Ferrite Toroids / Ferrite Rings 39.5x18x14mm Mn-Zn Coated

Datasheet

154In Stock

Rp173.186

Rp89.895

Rp77.053

Rp75.586

Min.: 1
Mult.: 1

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

ESD-R-25N-H
KEMET
1: Rp63.110
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

Rp63.110

Rp36.875

Rp32.289

Rp23.116

Rp22.749

Min.: 1
Mult.: 1

Ferrite Cable Cores 11x8mm Bare Ni-Zn for Flat Cable

ESD-FPL-14.5-5
KEMET
1: Rp9.723
4.318In Stock

Mfr. Part No.
ESD-FPL-14.5-5

Mouser Part No
80-ESD-FPL-14.5-5

KEMET

Ferrite Cable Cores 11x8mm Bare Ni-Zn for Flat Cable

Datasheet

4.318In Stock

Rp9.723

Rp5.229

Rp3.669

Rp3.321

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

ESD-R-19B
KEMET
1: Rp52.286
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

Rp52.286

Rp30.821

Rp27.152

Rp19.630

Rp18.346

Min.: 1
Mult.: 1

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

ESD-R-57M-H
KEMET
1: Rp381.964
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

Rp381.964

Rp204.741

Rp204.558

Rp196.302

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 15.1mm

ESD-R-25L-A
KEMET
1: Rp45.682
779In Stock

Mfr. Part No.
ESD-R-25L-A

Mouser Part No
80-ESD-R-25L-A

KEMET

Ferrite Toroids / Ferrite Rings 15.1mm

Datasheet

779In Stock

Rp45.682

Rp32.289

Rp27.886

Rp21.465

View

Min.: 1
Mult.: 1

Ferrite Cable Cores 48.3x2mm Split Core Ni-Zn for Flat Cable

ESD-FPD-34-1
KEMET
1: Rp157.592
169In Stock

Mfr. Part No.
ESD-FPD-34-1

Mouser Part No
80-ESD-FPD-34-1

KEMET

Ferrite Cable Cores 48.3x2mm Split Core Ni-Zn for Flat Cable

Datasheet

169In Stock

Rp157.592

Rp91.363

Rp79.255

Rp68.798

Rp68.614

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 32x19x15.8mm Mn-Zn Coated

ESD-R-31-P
KEMET
1: Rp88.978
355In Stock

Mfr. Part No.
ESD-R-31-P

Mouser Part No
80-ESD-R-31-P

KEMET

Ferrite Toroids / Ferrite Rings 32x19x15.8mm Mn-Zn Coated

Datasheet

355In Stock

Rp88.978

Rp51.919

Rp45.131

Rp34.307

Min.: 1
Mult.: 1

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

ESD-R-57N-H
KEMET
1: Rp404.162
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

Rp404.162

Rp210.245

Rp202.907

Quote

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: Rp110.076
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

Rp110.076

Rp63.294

Rp55.221

Rp53.387

View

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: Rp342.520
178In Stock

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

178In Stock

Rp342.520

Rp222.537

Rp212.630

Rp202.540

Rp190.615

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: Rp41.645
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

Rp41.645

Rp24.767

Rp19.997

Rp18.896

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: Rp47.883
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

Rp47.883

Rp28.253

Rp24.767

Rp20.548

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: Rp58.707
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

Rp58.707

Rp34.490

Rp30.271

Rp27.702

View

Min.: 1
Mult.: 1