Passive Components – Mouser Switzerland

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm ESD-R-38D-B KEMET 1: 7.95 CHF 1 691In 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 Learn More about KEMET emi cores	Datasheet	1 691In Stock	7.95 CHF 5.66 CHF 4.75 CHF 4.11 CHF 3.85 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 53x19mm 10MHz Mn-Zn 85C ESD-SR-S47M KEMET 1: 11.25 CHF 373In Stock	Mfr. Part No. ESD-SR-S47M Mouser Part No 80-ESD-SR-S47M	KEMET	Ferrite Clamp On Cores 53x19mm 10MHz Mn-Zn 85C Learn More about KEMET emi cores	Datasheet	373In Stock	11.25 CHF 6.52 CHF 5.64 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 6x18.5x14mm Ni-Zn 65C ESD-SR-S10 KEMET 1: 2.14 CHF 6 152In Stock	Mfr. Part No. ESD-SR-S10 Mouser Part No 80-ESD-SR-S10	KEMET	Ferrite Clamp On Cores 6x18.5x14mm Ni-Zn 65C Learn More about KEMET emi cores	Datasheet	6 152In Stock	2.14 CHF 1.42 CHF 1.22 CHF 1.08 CHF View 0.945 CHF 0.821 CHF 0.746 CHF 0.733 CHF	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 1mm B-20L-25 KEMET 1: 0.177 CHF 52 517In Stock	Mfr. Part No. B-20L-25 Mouser Part No 80-B-20L-25	KEMET	Ferrite Cable Cores Ferrite Bead Core EMI 1mm Learn More about KEMET Kemet EMI Cores	Datasheet	52 517In Stock	0.177 CHF 0.128 CHF 0.109 CHF 0.094 CHF View 0.082 CHF 0.081 CHF 0.072 CHF 0.062 CHF	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 1.6mm B-20L-44 KEMET 1: 0.153 CHF 47 031In Stock	Mfr. Part No. B-20L-44 Mouser Part No 80-B-20L-44	KEMET	Ferrite Cable Cores Ferrite Bead Core EMI 1.6mm Learn More about KEMET Kemet EMI Cores	Datasheet	47 031In Stock	0.153 CHF 0.116 CHF 0.101 CHF 0.09 CHF View 0.082 CHF 0.074 CHF 0.066 CHF 0.058 CHF	Min.: 1 Mult.: 1
Ferrite Cable Cores 56x2mm Split Core Ni-Zn for Flat Cable ESD-FPD-40-1 KEMET 1: 7.89 CHF 364In 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 Learn More about KEMET emi cores	Datasheet	364In Stock	7.89 CHF 5.32 CHF 4.46 CHF 3.86 CHF 3.56 CHF	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm B-20L-34 KEMET 1: 0.282 CHF 27 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 Learn More about KEMET Kemet EMI Cores	Datasheet	27 395In Stock	0.282 CHF 0.197 CHF 0.153 CHF 0.136 CHF View 0.116 CHF 0.097 CHF 0.088 CHF 0.072 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 6mm ESD-R-12D KEMET 1: 1.64 CHF 1 895In Stock	Mfr. Part No. ESD-R-12D Mouser Part No 80-ESD-R-12D	KEMET	Ferrite Toroids / Ferrite Rings 6mm Learn More about KEMET emi cores	Datasheet	1 895In Stock	1.64 CHF 1.12 CHF 0.973 CHF 0.861 CHF View 0.753 CHF 0.624 CHF 0.564 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm ESD-R-19B KEMET 1: 2.29 CHF 672In 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 Learn More about KEMET emi cores	Datasheet	672In Stock	2.29 CHF 1.58 CHF 1.35 CHF 1.19 CHF View 1.04 CHF 0.861 CHF 0.837 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 10.5mm ESD-R-15C KEMET 1: 1.06 CHF 100In Stock 800Expected 13/04/2027	Mfr. Part No. ESD-R-15C Mouser Part No 80-ESD-R-15C	KEMET	Ferrite Toroids / Ferrite Rings 10.5mm Learn More about KEMET emi cores	Datasheet	100In Stock 800Expected 13/04/2027	1.06 CHF 0.733 CHF 0.627 CHF 0.555 CHF View 0.496 CHF 0.401 CHF 0.359 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 48.5x26x16mm Mn-Zn Coated ESD-R-47-P KEMET 1: 10.25 CHF 188In Stock	Mfr. Part No. ESD-R-47-P Mouser Part No 80-ESD-R-47-P	KEMET	Ferrite Toroids / Ferrite Rings 48.5x26x16mm Mn-Zn Coated Learn More about KEMET emi cores	Datasheet	188In Stock	10.25 CHF 6.43 CHF 5.46 CHF 4.90 CHF View 4.79 CHF 4.67 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 31.5x13x38mm Ni-Zn Snap-on ESD-SR-250G KEMET 1: 6.85 CHF 241In Stock	Mfr. Part No. ESD-SR-250G Mouser Part No 80-ESD-SR-250G	KEMET	Ferrite Clamp On Cores 31.5x13x38mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	241In Stock	6.85 CHF 4.62 CHF 3.88 CHF 3.25 CHF View 3.08 CHF 3.00 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 15.5x18.5mm 300MHz Mn-Zn 85C ESD-SR-S10M KEMET 1: 3.97 CHF 534In Stock	Mfr. Part No. ESD-SR-S10M Mouser Part No 80-ESD-SR-S10M	KEMET	Ferrite Clamp On Cores 15.5x18.5mm 300MHz Mn-Zn 85C Learn More about KEMET emi cores	Datasheet	534In Stock	3.97 CHF 2.72 CHF 2.31 CHF 2.03 CHF View 1.76 CHF 1.68 CHF 1.67 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 15x5x9mm 10MHz Mn-Zn 120C ESD-R-12M-H KEMET 1: 1.14 CHF 2 486In 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 Learn More about KEMET emi cores	Datasheet	2 486In Stock	1.14 CHF 0.772 CHF 0.677 CHF 0.605 CHF View 0.543 CHF 0.446 CHF 0.411 CHF 0.381 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 6.2mm ESD-R-14A KEMET 1: 0.693 CHF 4 679In Stock	Mfr. Part No. ESD-R-14A Mouser Part No 80-ESD-R-14A	KEMET	Ferrite Toroids / Ferrite Rings 6.2mm Learn More about KEMET emi cores	Datasheet	4 679In Stock	0.693 CHF 0.483 CHF 0.417 CHF 0.371 CHF View 0.328 CHF 0.276 CHF 0.239 CHF 0.222 CHF 0.211 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 29x12.7x16mm 300MHz Ni-Zn 120C ESD-R-25N-H KEMET 1: 2.77 CHF 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 Learn More about KEMET emi cores	Datasheet	928In Stock	2.77 CHF 1.91 CHF 1.62 CHF 1.41 CHF View 1.24 CHF 1.08 CHF 1.07 CHF 1.04 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 19x10.7x5.3mm Ni-Zn Coated ESD-R-19E-1 KEMET 1: 3.14 CHF 603In 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 Learn More about KEMET emi cores	Datasheet	603In Stock	3.14 CHF 2.15 CHF 1.83 CHF 1.47 CHF View 1.25 CHF 1.21 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 61x33.2x25mm 300MHz Ni-Zn 120C ESD-R-57N-H KEMET 1: 17.74 CHF 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 Learn More about KEMET emi cores	Datasheet	57In Stock	17.74 CHF 11.21 CHF 9.81 CHF 9.50 CHF 9.26 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 7x37.4x19.6x20.3mm ESD-SR-190736X-R1 KEMET 1: 3.11 CHF 924In Stock	Mfr. Part No. ESD-SR-190736X-R1 Mouser Part No 80-ESD-SR-190736X-R1	KEMET	Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 7x37.4x19.6x20.3mm Learn More about KEMET emi cores	Datasheet	924In Stock	3.11 CHF 2.13 CHF 1.82 CHF 1.59 CHF View 1.39 CHF 1.31 CHF	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: 1.83 CHF 602In 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 Learn More about KEMET emi cores	Datasheet	602In Stock	1.83 CHF 1.25 CHF 1.08 CHF 0.945 CHF View 0.829 CHF 0.705 CHF	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: 2.05 CHF 680In 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 Learn More about KEMET emi cores		680In Stock	2.05 CHF 1.41 CHF 1.21 CHF 1.07 CHF View 1.01 CHF 0.934 CHF 0.926 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings Toroidal,Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H ESD-R-25SR KEMET 1: 3.63 CHF 200In Stock	Mfr. Part No. ESD-R-25SR Mouser Part No 80-ESD-R-25SR	KEMET	Ferrite Toroids / Ferrite Rings Toroidal,Mn-Zn Low Frequency AM Band 150kHz Ring High permeability S15H Learn More about KEMET emi cores	Datasheet	200In Stock	3.63 CHF 2.49 CHF 2.11 CHF 1.85 CHF View 1.60 CHF 1.58 CHF	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: 4.60 CHF 76In 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 Learn More about KEMET emi cores	Datasheet	76In Stock	4.60 CHF 3.14 CHF 2.65 CHF 2.37 CHF View 2.34 CHF 2.33 CHF 2.32 CHF	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 ESD-R-291216XH-R1 KEMET 1: 2.57 CHF 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 Learn More about KEMET emi cores	Datasheet	319In Stock	2.57 CHF 1.78 CHF 1.52 CHF 1.33 CHF View 1.16 CHF 1.06 CHF	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: 14.31 CHF 79In Stock 120Expected 27/04/2027	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 Learn More about KEMET emi cores	Datasheet	79In Stock 120Expected 27/04/2027	14.31 CHF 9.45 CHF 8.91 CHF 8.90 CHF	Min.: 1 Mult.: 1

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