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.

Results: 100
Select Image Part # Mfr. Description Datasheet Availability Pricing (DKK) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Product Type Product Inside Diameter Outside Diameter Outside Length Outside Height Series Packaging Core Material
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 24.4 mm 51 mm 19 mm ESD-R-512419XH-R1 Tray Manganese Zinc (MnZn) HR1
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 33.2 mm 61 mm 25 mm ESD-R-613325XH-R1 Tray Manganese Zinc (MnZn) HR1
KEMET Ferrite Toroids / Ferrite Rings 5mm 12.175In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 5 mm 9.5 mm 10 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 25.5mm 335In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 25.5 mm 48 mm 16 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 25.5mm 238In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 25.5 mm 51.5 mm 17.5 mm ESD-R-B Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings Snap-on Ni-Zn High Frequency FM Band Split UL94 V-0 HR1 16In Stock
1.200On Order
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings EMI Cores 7 mm 19.6 mm 37.4 mm ESD-SR-190736X-R1 Tray Manganese Zinc (MnZn) HR1
KEMET Ferrite Toroids / Ferrite Rings 10.5x5.5x20mm Ni-Zn Bare 195In Stock
1.260Expected 25/05/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 5.5 mm 10.5 mm 20 mm ESD-R Tray Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 7.3mm 1.468In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 7.3 mm 12 mm 15.3 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 8.5mm 1.373In Stock
1.400Expected 13/08/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 8.5 mm 12 mm 15 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 15x5x9mm 300MHz Ni-Zn 120C 272In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 5 mm 15 mm 9 mm ESD-R-H Tray
KEMET Ferrite Toroids / Ferrite Rings 7mm 1.828In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 7 mm 14 mm 3 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 10mm 41In Stock
2.400Expected 24/07/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 10 mm 14 mm 8 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 10.5mm 146In Stock
800Expected 23/07/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 10.5 mm 15.2 mm 12.5 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 10.5mm 292In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 10.5 mm 15 mm 12 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 11.6mm 667In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 11.6 mm 15.8 mm 8.4 mm ESD-R Bulk Manganese Zinc (MnZn)
KEMET Ferrite Toroids / Ferrite Rings 9mm 1.224In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 9 mm 16 mm 17 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 9.4mm 766In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 9.4 mm 17.7 mm 28.8 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 10mm 65In Stock
1.664Expected 15/04/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 10 mm 18 mm 6 mm ESD-R Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm 509In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 8.8 mm 21.5 mm 13 mm ESD-R-B Bulk Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 22x7.7x14mm 10MHz Mn-Zn 120C 395In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 7.7 mm 22 mm 14 mm ESD-R-H Tray
KEMET Ferrite Toroids / Ferrite Rings 22x7.7x14mm 300MHz Ni-Zn 120C 201In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 7.7 mm 22 mm 14 mm ESD-R-H Tray
KEMET Ferrite Toroids / Ferrite Rings 10mm 410In Stock
960Expected 04/08/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 10 mm 18.5 mm 10 mm ESD-R Bulk Manganese Zinc (MnZn)
KEMET Ferrite Toroids / Ferrite Rings 22.5x13.8x6.4mm Ni-Zn Bare 794In Stock
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 13.8 mm 22.5 mm 6.4 mm ESD-R Tray Nickel Zinc
KEMET Ferrite Toroids / Ferrite Rings 14mm 125In Stock
300Expected 21/07/2026
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 14 mm 26 mm 15 mm ESD-R Bulk Manganese Zinc (MnZn)
KEMET Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 13.9mm 300In Stock
300On Order
Min.: 1
Mult.: 1

Ferrite Toroids / Ferrite Rings Toroids 13.9 mm 29.3 mm 15 mm ESD-R-B Bulk Manganese Zinc (MnZn)