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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 4.8x2.4mm 300MHz Ni-Zn Bare

B-20L-48B-L
KEMET
1: $0.25
31,275In 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

31,275In Stock

$0.25

$0.136

$0.104

$0.092

View

Min.: 1
Mult.: 1

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

B-20L-25
KEMET
1: $0.20
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

$0.20

$0.127

$0.099

$0.094

View

Min.: 1
Mult.: 1

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

ESD-FPD-40-1
KEMET
1: $9.73
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

$9.73

$5.33

$4.59

$4.42

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 25.5mm

ESD-R-47
KEMET
1: $6.61
1,120In Stock

Mfr. Part No.
ESD-R-47

Mouser Part No
80-ESD-R-47

KEMET

Ferrite Toroids / Ferrite Rings 25.5mm

Datasheet

1,120In Stock

$6.61

$3.51

$3.22

$2.85

$2.84

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 25.5mm

ESD-R-47D-1
KEMET
1: $9.75
331In Stock

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

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

KEMET

Ferrite Toroids / Ferrite Rings 25.5mm

Datasheet

331In Stock

$9.75

$5.50

$4.77

$4.40

Min.: 1
Mult.: 1

Ferrite Cable Cores Solid Core Flat 68.6mm Cable

ESD-FPL-50
KEMET
1: $5.09
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

$5.09

$2.94

$2.57

$2.47

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm

ESD-R-38D-B
KEMET
1: $10.33
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

$10.33

$5.90

$5.09

$4.78

Min.: 1
Mult.: 1

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

B-20L-34
KEMET
1: $0.35
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

$0.35

$0.19

$0.144

$0.115

View

Min.: 1
Mult.: 1

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

ESD-FPL-18-8
KEMET
1: $3.48
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

$3.48

$2.04

$1.79

$1.78

View

Min.: 1
Mult.: 1

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

ESD-FPL-14.5-3
KEMET
1: $0.69
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

$0.69

$0.464

$0.351

$0.305

View

Min.: 1
Mult.: 1

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

ESD-R-25N-H
KEMET
1: $3.44
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

$3.44

$2.01

$1.76

$1.29

Min.: 1
Mult.: 1

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

ESD-R-19E-1
KEMET
1: $3.91
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

$3.91

$2.28

$1.83

$1.50

Min.: 1
Mult.: 1

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

ESD-R-12M-H
KEMET
1: $1.42
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

$1.42

$0.74

$0.533

$0.504

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 39.5x18x14mm Mn-Zn Coated

ESD-R-38-P
KEMET
1: $9.44
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

$9.44

$4.90

$4.29

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings 15.1mm

ESD-R-25L-A
KEMET
1: $2.49
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

$2.49

$1.76

$1.52

$1.24

$0.84

Min.: 1
Mult.: 1

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

ESD-FPL-14.5-5
KEMET
1: $0.53
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

$0.53

$0.28

$0.20

$0.181

$0.18

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

ESD-R-19B
KEMET
1: $2.85
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

$2.85

$1.67

$1.48

$1.07

$1.04

Min.: 1
Mult.: 1

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

ESD-R-57M-H
KEMET
1: $20.83
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

$20.83

$11.15

$11.13

Min.: 1
Mult.: 1

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

ESD-FPD-34-1
KEMET
1: $8.59
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

$8.59

$4.98

$4.33

$3.90

Min.: 1
Mult.: 1

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

ESD-R-31-P
KEMET
1: $4.85
295In 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

295In Stock

$4.85

$2.83

$2.47

$1.95

Min.: 1
Mult.: 1

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

ESD-R-57N-H
KEMET
1: $22.04
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

$22.04

$11.50

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: $6.00
566In 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

566In Stock

$6.00

$3.45

$3.01

$2.91

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: $18.68
174In 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

174In Stock

$18.68

$12.13

$11.60

$10.58

$10.40

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: $2.27
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

$2.27

$1.35

$1.09

$1.03

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: $2.67
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

$2.67

$1.58

$1.40

$1.24

View

Min.: 1
Mult.: 1