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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Product Type
Product
Type
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
KEMET Ferrite Toroids / Ferrite Rings 7mm
Datasheet
6.349In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids EMI, Solid Toroidal Cores - 25 C + 85 C Bulk
KEMET Ferrite Toroids / Ferrite Rings 29x12.7x16mm 300MHz Ni-Zn 120C
Datasheet
942In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings 61x33.2x25mm 300MHz Ni-Zn 120C
Datasheet
57In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings Coated Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H 594In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Ring Coated Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings Toroidal w/case Nanocrystal Low Frequency 150kHz Ring -40/+120C UL94 V-0 212In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 627In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores White Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings Bare,Toroidal Mn-Zn Low Frequency AM Band 150kHz Ring High permeability 10H 692In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Ring Bare Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings Toroidal,Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H 143In Stock
300Expected 7/23/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Ring Bare Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 334In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores White Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 236In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores White Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal,Mn-Zn -40/+120C UL94 V-0 HR1 118In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores White Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 71In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores White Ring Toroidal Core - 40 C + 120 C Tray
KEMET Ferrite Toroids / Ferrite Rings Snap-on Ni-Zn High Frequency FM Band Split UL94 V-0 HR1 1.297In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Snap-On Ring Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings Snap-on Ni-Zn High Frequency FM Band Split UL94 V-0 HR1 1.020In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Snap-On Ring Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings Snap-on Ni-Zn High Frequency FM Band Split UL94 V-0 HR1 710In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Snap-On Ring Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings Snap-on Ni-Zn High Frequency FM Band Split UL94 V-0 HR1 43In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores Snap-On Ring Toroidal Core - 25 C + 85 C Tray
KEMET Ferrite Cable Cores Ferrite Bead Core EMI 1mm
Datasheet
54.088In Stock
Min.: 1
Mult.: 1

Ferrite Cable Cores Round Cable Cores Solid Bead Core - 25 C + 85 C Bulk
KEMET Ferrite Cable Cores Ferrite Bead Core EMI 2.4mm
Datasheet
45.098In Stock
Min.: 1
Mult.: 1

Ferrite Cable Cores Round Cable Cores Solid Bead Core - 25 C + 85 C Bulk
KEMET Ferrite Cable Cores Ferrite Bead Core EMI 4.8mm
Datasheet
10.287In Stock
Min.: 1
Mult.: 1

Ferrite Cable Cores Round Cable Cores Solid Round Cable Core - 25 C + 85 C Bulk
KEMET Ferrite Cable Cores 14x1mm Bare Ni-Zn for Flat Cable
Datasheet
1.235In Stock
Min.: 1
Mult.: 1

Ferrite Cable Cores Flat Ribbon Cable Cores Solid Shield Bead - 25 C + 85 C Tray
KEMET Ferrite Toroids / Ferrite Rings 5mm
Datasheet
12.175In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids EMI, Solid Toroidal Cores - 25 C + 85 C Bulk
KEMET Ferrite Toroids / Ferrite Rings 25.5mm
Datasheet
335In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids EMI, Solid Toroidal Cores - 25 C + 85 C Bulk
KEMET Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 25.5mm
Datasheet
238In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids EMI, Solid Toroidal Cores - 25 C + 60 C Bulk
KEMET Ferrite Clamp On Cores 7x37.4x20.3mm Ni-Zn 65C
Datasheet
922In Stock
3.850On Order
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Ferrite Clamp On Cores Cable Single + 85 C Bulk
KEMET Ferrite Clamp On Cores 9x39x20mm Ni-Zn 65C
Datasheet
1.896In Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Ferrite Clamp On Cores Cable Single + 85 C Bulk