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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: $0.361
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

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Datasheet

52,581In Stock

$0.361

$0.231

$0.165

$0.15

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Min.: 1
Mult.: 1

Ferrite Cable Cores

Round Cable Cores Solid

Bead Core

- 25 C

+ 85 C

Bulk

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

ESD-FPD-40-1
KEMET
1: $13.52
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

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Datasheet

366In Stock

$13.52

$7.41

$6.39

$5.91

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Split

Shield Bead

- 25 C

+ 85 C

Tray

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

B-20L-34
KEMET
1: $0.487
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

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Datasheet

28,395In Stock

$0.487

$0.264

$0.20

$0.16

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Min.: 1
Mult.: 1

Ferrite Cable Cores

Round Cable Cores Solid

Bead Core

- 25 C

+ 85 C

Bulk

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

ESD-FPL-18-8
KEMET
1: $4.84
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

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Datasheet

1,145In Stock

$4.84

$2.84

$2.49

$2.47

View

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Solid

Shield Bead

- 25 C

+ 85 C

Tray

Ferrite Cable Cores Solid Core Flat 68.6mm Cable

ESD-FPL-50
KEMET
1: $7.08
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

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Datasheet

899In Stock

$7.08

$4.09

$3.57

$3.43

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Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Solid

Tube Core

- 25 C

+ 85 C

Bulk

Ferrite Toroids / Ferrite Rings 25.5mm

ESD-R-47
KEMET
1: $9.23
1,120In Stock

Mfr. Part No.
ESD-R-47

Mouser Part No
80-ESD-R-47

KEMET

Ferrite Toroids / Ferrite Rings 25.5mm

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Datasheet

1,120In Stock

$9.23

$4.88

$4.48

$3.79

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 85 C

Bulk

Ferrite Toroids / Ferrite Rings 25.5mm

ESD-R-47D-1
KEMET
1: $13.54
331In Stock

Mfr. Part No.
ESD-R-47D-1

Mouser Part No
80-ESD-R-47D-1

KEMET

Ferrite Toroids / Ferrite Rings 25.5mm

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Datasheet

331In Stock

$13.54

$7.66

$6.91

$6.73

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 85 C

Bulk

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

B-20L-48B-L
KEMET
1: $0.348
33,375In 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

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Datasheet

33,375In Stock

$0.348

$0.189

$0.145

$0.128

View

Min.: 1
Mult.: 1

Ferrite Cable Cores

Round Cable Cores Solid

Shield Bead

- 25 C

+ 85 C

Bulk

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

ESD-FPL-14.5-3
KEMET
1: $0.959
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

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Datasheet

1,336In Stock

$0.959

$0.645

$0.491

$0.428

View

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Solid

Shield Bead

- 25 C

+ 85 C

Tray

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

ESD-R-25N-H
KEMET
1: $4.78
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

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Datasheet

928In Stock

$4.78

$2.79

$2.45

$1.75

$1.72

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

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

ESD-R-19E-1
KEMET
1: $5.43
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

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Datasheet

615In Stock

$5.43

$3.17

$2.53

$2.00

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 25 C

+ 85 C

Tray

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

ESD-FPD-34-1
KEMET
1: $11.94
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

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Datasheet

169In Stock

$11.94

$6.94

$6.02

$5.21

Quote

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Split

Shield Bead

- 25 C

+ 85 C

Tray

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

ESD-R-31-P
KEMET
1: $6.74
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

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Datasheet

355In Stock

$6.74

$3.93

$3.42

$2.60

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 25 C

+ 85 C

Tray

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

ESD-FPL-14.5-5
KEMET
1: $0.737
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

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Datasheet

4,318In Stock

$0.737

$0.396

$0.278

$0.252

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Solid

Shield Bead

- 25 C

+ 85 C

Tray

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

ESD-R-19B
KEMET
1: $3.96
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

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Datasheet

673In Stock

$3.96

$2.34

$2.06

$1.49

$1.39

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 60 C

Bulk

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

ESD-R-57M-H
KEMET
1: $29.15
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

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Datasheet

60In Stock

$29.15

$15.51

$15.50

$14.87

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

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

ESD-R-12M-H
KEMET
1: $1.97
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

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Datasheet

2,498In Stock

$1.97

$1.03

$0.739

$0.681

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

Ferrite Toroids / Ferrite Rings 39.5x18x14mm Mn-Zn Coated

ESD-R-38-P
KEMET
1: $13.12
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

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Datasheet

154In Stock

$13.12

$6.81

$5.84

$5.73

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 25 C

+ 85 C

Tray

Ferrite Toroids / Ferrite Rings 15.1mm

ESD-R-25L-A
KEMET
1: $3.46
779In Stock

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

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

KEMET

Ferrite Toroids / Ferrite Rings 15.1mm

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Datasheet

779In Stock

$3.46

$2.45

$2.11

$1.85

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 85 C

Bulk

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

ESD-R-57N-H
KEMET
1: $30.62
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

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Datasheet

57In Stock

$30.62

$15.93

$15.92

$15.37

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

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

ESD-R-25SR-P
KEMET
1: $8.34
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

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576In Stock

$8.34

$4.80

$4.18

$4.04

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

Ring Coated Toroidal Core

- 25 C

+ 85 C

Tray

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

ESD-R-412119H-NC23
KEMET
1: $25.95
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

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178In Stock

$25.95

$16.86

$16.11

$15.35

$14.44

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

Ring Toroidal Core

- 40 C

+ 120 C

Tray

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

ESD-R-220814XH-R1
KEMET
1: $3.16
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

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607In Stock

$3.16

$1.88

$1.52

$1.43

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White Ring Toroidal Core

- 40 C

+ 120 C

Tray

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

ESD-R-25SH
KEMET
1: $3.63
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

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682In Stock

$3.63

$2.14

$1.88

$1.56

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

Ring Bare Toroidal Core

- 25 C

+ 85 C

Tray

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

ESD-R-291216XH-R1
KEMET
1: $4.45
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

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319In Stock

$4.45

$2.61

$2.29

$2.10

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White Ring Toroidal Core

- 40 C

+ 120 C

Tray

EMI Cores

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