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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: ₡130,12
30 985In Stock

Mfr. Part #
B-20L-48B-L

Mouser Part #
80-B-20L-48B-L

KEMET

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

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Datasheet

30 985In Stock

₡130,12

₡70,78

₡54,13

₡47,88

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Min.: 1
Mult.: 1

Ferrite Cable Cores

Round Cable Cores Solid

Shield Bead

- 25 C

+ 85 C

Bulk

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

B-20L-34
KEMET
1: ₡182,16
27 395In Stock

Mfr. Part #
B-20L-34

Mouser Part #
80-B-20L-34

KEMET

Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm

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Datasheet

27 395In Stock

₡182,16

₡98,89

₡74,95

₡61,94

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Min.: 1
Mult.: 1

Ferrite Cable Cores

Round Cable Cores Solid

Bead Core

- 25 C

+ 85 C

Bulk

Ferrite Toroids / Ferrite Rings 6mm

ESD-R-12D
KEMET
1: ₡1 061,75
1 895In Stock

Mfr. Part #
ESD-R-12D

Mouser Part #
80-ESD-R-12D

KEMET

Ferrite Toroids / Ferrite Rings 6mm

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Datasheet

1 895In Stock

₡1 061,75

₡629,76

₡556,90

₡403,88

₡351,31

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 85 C

Bulk

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm

ESD-R-38D-B
KEMET
1: ₡5 345,18
1 721In Stock

Mfr. Part #
ESD-R-38D-B

Mouser Part #
80-ESD-R-38D-B

KEMET

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm

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Datasheet

1 721In Stock

₡5 345,18

₡3 065,54

₡2 649,17

₡2 394,14

₡2 388,94

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 60 C

Bulk

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

B-20L-25
KEMET
1: ₡104,09
52 537In Stock

Mfr. Part #
B-20L-25

Mouser Part #
80-B-20L-25

KEMET

Ferrite Cable Cores Ferrite Bead Core EMI 1mm

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Datasheet

52 537In Stock

₡104,09

₡66,10

₡51,53

₡48,40

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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: ₡5 064,13
366In Stock

Mfr. Part #
ESD-FPD-40-1

Mouser Part #
80-ESD-FPD-40-1

KEMET

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

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Datasheet

366In Stock

₡5 064,13

₡2 872,97

₡2 487,82

₡2 211,98

₡2 206,77

Min.: 1
Mult.: 1

Ferrite Cable Cores

Flat Ribbon Cable Cores Split

Shield Bead

- 25 C

+ 85 C

Tray

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

ESD-SR-S47M
KEMET
1: ₡7 369,79
394In Stock

Mfr. Part #
ESD-SR-S47M

Mouser Part #
80-ESD-SR-S47M

KEMET

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

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Datasheet

394In Stock

₡7 369,79

₡4 220,97

₡3 513,14

₡3 507,94

Min.: 1
Mult.: 1

Ferrite Clamp On Cores

Cable Single

- 40 C

+ 85 C

Bulk

Ferrite Toroids / Ferrite Rings 14mm

ESD-R-25
KEMET
1: ₡1 155,43
263In Stock
300Expected 9/24/2026

Mfr. Part #
ESD-R-25

Mouser Part #
80-ESD-R-25

KEMET

Ferrite Toroids / Ferrite Rings 14mm

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Datasheet

263In Stock

300Expected 9/24/2026

₡1 155,43

₡687,01

₡608,94

₡458,01

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

EMI, Solid Toroidal Cores

- 25 C

+ 85 C

Bulk

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

ESD-R-25N-H
KEMET
1: ₡1 790,40
928In Stock

Mfr. Part #
ESD-R-25N-H

Mouser Part #
80-ESD-R-25N-H

KEMET

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

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Datasheet

928In Stock

₡1 790,40

₡1 046,14

₡916,02

₡655,79

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Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

ESD-R-19B
KEMET
1: ₡1 483,33
673In Stock

Mfr. Part #
ESD-R-19B

Mouser Part #
80-ESD-R-19B

KEMET

Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm

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Datasheet

673In Stock

₡1 483,33

₡874,38

₡770,29

₡556,90

₡520,47

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: ₡10 862,11
60In Stock

Mfr. Part #
ESD-R-57M-H

Mouser Part #
80-ESD-R-57M-H

KEMET

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

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Datasheet

60In Stock

₡10 862,11

₡5 808,39

₡5 683,48

₡5 568,98

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: ₡2 035,02
615In Stock

Mfr. Part #
ESD-R-19E-1

Mouser Part #
80-ESD-R-19E-1

KEMET

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

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Datasheet

615In Stock

₡2 035,02

₡1 186,66

₡947,25

₡749,47

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 25 C

+ 85 C

Tray

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

ESD-R-12M-H
KEMET
1: ₡739,06
2 496In Stock

Mfr. Part #
ESD-R-12M-H

Mouser Part #
80-ESD-R-12M-H

KEMET

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

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Datasheet

2 496In Stock

₡739,06

₡385,14

₡276,89

₡262,31

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

Toroids

- 40 C

+ 120 C

Tray

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

ESD-R-57N-H
KEMET
1: ₡11 460,65
57In Stock

Mfr. Part #
ESD-R-57N-H

Mouser Part #
80-ESD-R-57N-H

KEMET

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

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Datasheet

57In Stock

₡11 460,65

₡5 959,33

₡5 756,35

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: ₡2 971,86
576In Stock

Mfr. Part #
ESD-R-25SR-P

Mouser Part #
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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Datasheet

576In Stock

₡2 971,86

₡1 712,33

₡1 530,17

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

Ring Coated Toroidal Core

- 25 C

+ 85 C

Tray

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

ESD-SR-190736X-R1
KEMET
1: ₡2 009,00
952In Stock

Mfr. Part #
ESD-SR-190736X-R1

Mouser Part #
80-ESD-SR-190736X-R1

KEMET

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

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Datasheet

952In Stock

₡2 009,00

₡1 171,05

₡1 030,52

₡988,88

View

Min.: 1
Mult.: 1

Ferrite Clamp On Cores

EMI Cores

Snap-On Ring 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-220814XH-R1
KEMET
1: ₡1 181,46
602In Stock

Mfr. Part #
ESD-R-220814XH-R1

Mouser Part #
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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Datasheet

602In Stock

₡1 181,46

₡702,63

₡567,31

₡536,08

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: ₡1 327,19
682In Stock

Mfr. Part #
ESD-R-25SH

Mouser Part #
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

₡1 327,19

₡780,70

₡687,01

₡681,81

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

Ring Bare Toroidal Core

- 25 C

+ 85 C

Tray

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

ESD-R-25SR
KEMET
1: ₡2 347,30
250In Stock

Mfr. Part #
ESD-R-25SR

Mouser Part #
80-ESD-R-25SR

KEMET

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

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Datasheet

250In Stock

₡2 347,30

₡1 363,62

₡1 197,07

₡1 155,43

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: ₡1 587,42
319In Stock

Mfr. Part #
ESD-R-291216XH-R1

Mouser Part #
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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Datasheet

319In Stock

₡1 587,42

₡931,63

₡817,13

₡733,86

₡728,65

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White Ring Toroidal Core

- 40 C

+ 120 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: ₡9 253,87
85In Stock
120Expected 4/27/2027

Mfr. Part #
ESD-R-412119H-NC23

Mouser Part #
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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Datasheet

85In Stock

120Expected 4/27/2027

₡9 253,87

₡5 829,21

Quote

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-421617XH-R1
KEMET
1: ₡3 013,49
236In Stock

Mfr. Part #
ESD-R-421617XH-R1

Mouser Part #
80-ESD-R-421617XH-R1

KEMET

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

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Datasheet

236In Stock

₡3 013,49

₡1 582,21

₡1 374,03

₡1 368,82

Quote

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White 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-512419XH-R1
KEMET
1: ₡4 220,97
78In Stock

Mfr. Part #
ESD-R-512419XH-R1

Mouser Part #
80-ESD-R-512419XH-R1

KEMET

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

Learn More

Datasheet

78In Stock

₡4 220,97

₡2 196,36

₡2 191,16

₡2 170,34

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White 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-613325XH-R1
KEMET
1: ₡10 180,30
71In Stock

Mfr. Part #
ESD-R-613325XH-R1

Mouser Part #
80-ESD-R-613325XH-R1

KEMET

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

Learn More

Datasheet

71In Stock

₡10 180,30

₡6 698,39

View

Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings

EMI Cores

White Ring Toroidal Core

- 40 C

+ 120 C

Tray

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

ESD-SR-130527X-R1
KEMET
1: ₡1 420,87
1 224In Stock

Mfr. Part #
ESD-SR-130527X-R1

Mouser Part #
80-ESD-SR-130527X-R1

KEMET

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

Learn More

Datasheet

1 224In Stock

₡1 420,87

₡837,95

₡660,99

₡614,15

View

Min.: 1
Mult.: 1

Ferrite Clamp On Cores

EMI Cores

Snap-On Ring Toroidal Core

- 25 C

+ 85 C

Tray

EMI Cores

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