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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 (IDR) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Product
Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 25.5mm ESD-R-47D-B KEMET 1: Rp232.627,28 163In Stock 180Expected 24/12/2026	Mfr. Part No. ESD-R-47D-B Mouser Part No 80-ESD-R-47D-B	KEMET	Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 25.5mm Learn More about KEMET emi cores	Datasheet	163In Stock 180Expected 24/12/2026	Rp232.627,28 Rp131.357,36 Rp124.018,96 Rp122.734,74	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 52.5x22.7x18.5mm Mn-Zn Case ESD-R-47H KEMET 1: Rp294.636,76 8In Stock	Mfr. Part No. ESD-R-47H Mouser Part No 80-ESD-R-47H	KEMET	Ferrite Toroids / Ferrite Rings 52.5x22.7x18.5mm Mn-Zn Case Learn More about KEMET emi cores	Datasheet	8In Stock	Rp294.636,76 Rp186.945,74 Rp185.111,14 Rp175.204,30 View Rp169.150,12 Rp164.563,62 Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 51x24.4x19mm 10MHz Mn-Zn 120C ESD-R-47M-H KEMET 1: Rp150.437,20 67In Stock	Mfr. Part No. ESD-R-47M-H Mouser Part No 80-ESD-R-47M-H	KEMET	Ferrite Toroids / Ferrite Rings 51x24.4x19mm 10MHz Mn-Zn 120C Learn More about KEMET emi cores	Datasheet	67In Stock	Rp150.437,20 Rp78.153,96 Rp77.970,50 Rp76.686,28 Rp72.833,62	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 47x27x15mm Mn-Zn Bare ESD-R-47S KEMET 1: Rp171.902,02 55In Stock	Mfr. Part No. ESD-R-47S Mouser Part No 80-ESD-R-47S	KEMET	Ferrite Toroids / Ferrite Rings 47x27x15mm Mn-Zn Bare Learn More about KEMET emi cores	Datasheet	55In Stock	Rp171.902,02 Rp88.794,64 Rp88.611,18 Rp87.693,88 Quote Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 47x27x15mm 150kHz Mn-Zn 85C ESD-R-47SR KEMET 1: Rp237.764,16 100In Stock	Mfr. Part No. ESD-R-47SR Mouser Part No 80-ESD-R-47SR	KEMET	Ferrite Toroids / Ferrite Rings 47x27x15mm 150kHz Mn-Zn 85C Learn More about KEMET emi cores	Datasheet	100In Stock	Rp237.764,16 Rp149.336,44 Rp147.318,38 Rp139.062,68 View Rp134.843,10 Rp130.990,44 Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	EMI Cores
Ferrite Toroids / Ferrite Rings 32.4mm ESD-R-57 KEMET 1: Rp352.793,58 53In Stock	Mfr. Part No. ESD-R-57 Mouser Part No 80-ESD-R-57	KEMET	Ferrite Toroids / Ferrite Rings 32.4mm Learn More about KEMET emi cores	Datasheet	53In Stock	Rp352.793,58 Rp233.544,58 Rp215.015,12 Rp209.878,24 Rp200.154,86	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 61x32.4x24mm Mn-Zn Case and Tape ESD-R-57A-1 KEMET 1: Rp407.831,58 38In Stock	Mfr. Part No. ESD-R-57A-1 Mouser Part No 80-ESD-R-57A-1	KEMET	Ferrite Toroids / Ferrite Rings 61x32.4x24mm Mn-Zn Case and Tape Learn More about KEMET emi cores	Datasheet	38In Stock	Rp407.831,58 Rp272.438,10 Rp263.815,48 Rp250.789,82 View Rp242.717,58 Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 57x36x20mm Mn-Zn Bare ESD-R-57S KEMET 1: Rp269.319,28 42In Stock	Mfr. Part No. ESD-R-57S Mouser Part No 80-ESD-R-57S	KEMET	Ferrite Toroids / Ferrite Rings 57x36x20mm Mn-Zn Bare Learn More about KEMET emi cores	Datasheet	42In Stock	Rp269.319,28 Rp175.204,30 Rp169.700,50 Rp162.178,64 View Rp155.390,62 Rp151.171,04 Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Clamp On Cores 16.5x6x21mm Ni-Zn Snap-on ESD-SR-100G KEMET 1: Rp48.983,82 601In Stock 1.800On Order	Mfr. Part No. ESD-SR-100G Mouser Part No 80-ESD-SR-100G	KEMET	Ferrite Clamp On Cores 16.5x6x21mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	601In Stock 1.800On Order On Order Ship Dates Mfr. No: ESD-SR-100G Stock: 601 Can Dispatch Immediately On Order: 900 Expected 18/01/2027 900 Expected 03/02/2027 Factory Lead Time: 23 Weeks	Rp48.983,82 Rp30.454,36 Rp23.849,80 Rp18.712,92	Min.: 1 Mult.: 1 Max.: 360	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores 14.4x5x28mm Ni-Zn Snap-on ESD-SR-110G KEMET 1: Rp53.753,78 905In Stock	Mfr. Part No. ESD-SR-110G Mouser Part No 80-ESD-SR-110G	KEMET	Ferrite Clamp On Cores 14.4x5x28mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	905In Stock	Rp53.753,78 Rp31.555,12 Rp27.885,92 Rp25.317,48 View Rp23.482,88 Rp22.198,66	Min.: 1 Mult.: 1 Max.: 3.600	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores 16x6x33mm Ni-Zn Snap-on ESD-SR-120G KEMET 1: Rp58.340,28 317In Stock 700Expected 17/03/2027	Mfr. Part No. ESD-SR-120G Mouser Part No 80-ESD-SR-120G	KEMET	Ferrite Clamp On Cores 16x6x33mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	317In Stock 700Expected 17/03/2027	Rp58.340,28 Rp34.307,02 Rp30.087,44 Rp27.885,92 View Rp25.684,40 Rp24.583,64 Rp24.033,26 Rp23.849,80	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores 19.6x7x37.4mm Ni-Zn Snap-on ESD-SR-150G KEMET 1: Rp75.952,44 387In Stock	Mfr. Part No. ESD-SR-150G Mouser Part No 80-ESD-SR-150G	KEMET	Ferrite Clamp On Cores 19.6x7x37.4mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	387In Stock	Rp75.952,44 Rp44.213,86 Rp38.893,52 Rp36.875,46 View Rp36.508,54 Rp34.673,94 Rp34.123,56 Rp33.389,72 Quote	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores 20.2x9x39mm Ni-Zn Snap-on ESD-SR-160G KEMET 1: Rp76.319,36 269In Stock	Mfr. Part No. ESD-SR-160G Mouser Part No 80-ESD-SR-160G	KEMET	Ferrite Clamp On Cores 20.2x9x39mm Ni-Zn Snap-on Learn More about KEMET emi cores	Datasheet	269In Stock	Rp76.319,36 Rp44.397,32 Rp38.893,52 Rp37.058,92 View Rp36.508,54 Rp34.857,40 Rp34.123,56 Rp33.389,72 Quote	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores 19.5x46.5x19.5mm 300MHz Ni-Zn 100C ESD-SR-160H KEMET 1: Rp113.194,82 200In Stock 210Expected 25/02/2027	Mfr. Part No. ESD-SR-160H Mouser Part No 80-ESD-SR-160H	KEMET	Ferrite Clamp On Cores 19.5x46.5x19.5mm 300MHz Ni-Zn 100C Learn More about KEMET emi cores	Datasheet	200In Stock 210Expected 25/02/2027	Rp113.194,82 Rp75.768,98 Rp66.229,06 Rp58.340,28 View Rp52.653,02 Rp51.368,80 Rp50.084,58	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	EMI, Split Snap-In Cores
Ferrite Clamp On Cores 19.5x46.5x19.5mm 300MHz Ni-Zn 125C ESD-SR-160HL KEMET 1: Rp99.618,78 155In Stock	Mfr. Part No. ESD-SR-160HL Mouser Part No 80-ESD-SR-160HL	KEMET	Ferrite Clamp On Cores 19.5x46.5x19.5mm 300MHz Ni-Zn 125C Learn More about KEMET emi cores	Datasheet	155In Stock	Rp99.618,78 Rp57.606,44 Rp50.268,04 Rp47.149,22 Rp44.580,78	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores 30x13x42mm Ni-Zn AEC-Q200 ESD-SR-250HL KEMET 1: Rp204.741,36 48In Stock	Mfr. Part No. ESD-SR-250HL Mouser Part No 80-ESD-SR-250HL	KEMET	Ferrite Clamp On Cores 30x13x42mm Ni-Zn AEC-Q200 Learn More about KEMET emi cores	Datasheet	48In Stock	Rp204.741,36 Rp135.210,02 Rp117.414,40 Rp108.057,94 View Rp105.489,50 Rp103.287,98 Rp101.453,38	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	Snap On Cores
Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 13x38x31.5x31.6mm ESD-SR-311337X-R1 KEMET 1: Rp142.548,42 2In Stock 60Expected 14/12/2026	Mfr. Part No. ESD-SR-311337X-R1 Mouser Part No 80-ESD-SR-311337X-R1	KEMET	Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 13x38x31.5x31.6mm Learn More about KEMET emi cores	Datasheet	2In Stock 60Expected 14/12/2026	Rp142.548,42 Rp105.856,42 Rp93.197,68 Rp83.107,38 View Rp76.502,82 Rp70.815,56 Rp69.531,34	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	EMI Cores
Ferrite Clamp On Cores 44x16.5mm 10MHz Mn-Zn 85C ESD-SR-S38M KEMET 1: Rp243.084,50 136In Stock	Mfr. Part No. ESD-SR-S38M Mouser Part No 80-ESD-SR-S38M	KEMET	Ferrite Clamp On Cores 44x16.5mm 10MHz Mn-Zn 85C Learn More about KEMET emi cores	Datasheet	136In Stock	Rp243.084,50 Rp146.768,00 Rp139.613,06	Min.: 1 Mult.: 1 Max.: 48	Ferrite Clamp On Cores	Ferrite Clamp On Cores
Ferrite Clamp On Cores 64x24mm 10MHz Mn-Zn 85C ESD-SR-S57M KEMET 1: Rp440.120,54 41In Stock 360On Order	Mfr. Part No. ESD-SR-S57M Mouser Part No 80-ESD-SR-S57M	KEMET	Ferrite Clamp On Cores 64x24mm 10MHz Mn-Zn 85C Learn More about KEMET emi cores	Datasheet	41In Stock 360On Order On Order Ship Dates Mfr. No: ESD-SR-S57M Stock: 41 Can Dispatch Immediately On Order: 192 Expected 04/01/2027 168 Expected 11/01/2027 Factory Lead Time: 23 Weeks	Rp440.120,54 Rp286.931,44	Min.: 1 Mult.: 1 Max.: 24	Ferrite Clamp On Cores	Ferrite Clamp On Cores
Ferrite Toroids / Ferrite Rings 22x7.7x14mm 300MHz Ni-Zn 120C ESD-R-19N-H KEMET 1: Rp53.203,40 1In Stock 480Expected 24/12/2026	Mfr. Part No. ESD-R-19N-H Mouser Part No 80-ESD-R-19N-H	KEMET	Ferrite Toroids / Ferrite Rings 22x7.7x14mm 300MHz Ni-Zn 120C Learn More about KEMET emi cores	Datasheet	1In Stock 480Expected 24/12/2026	Rp53.203,40 Rp34.307,02 Rp28.436,30 Rp21.648,28 View Rp21.097,90 Rp20.364,06 Rp20.180,60	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings Nickel Zinc 300MHz 7x12x5.5mm ESD-R-12S KEMET 1: Rp15.043,72 6.000Expected 25/02/2027	Mfr. Part No. ESD-R-12S Mouser Part No 80-ESD-R-12S	KEMET	Ferrite Toroids / Ferrite Rings Nickel Zinc 300MHz 7x12x5.5mm Learn More about KEMET emi cores	Datasheet	6.000Expected 25/02/2027	Rp15.043,72 Rp8.108,93 Rp6.054,18 Rp5.265,30 View Rp5.246,96 Rp5.118,53 Rp5.045,15	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 19mm ESD-R-31C KEMET 1: Rp43.113,10 1.699On Order	Mfr. Part No. ESD-R-31C Mouser Part No 80-ESD-R-31C	KEMET	Ferrite Toroids / Ferrite Rings 19mm Learn More about KEMET emi cores	Datasheet	1.699On Order On Order Ship Dates Mfr. No: ESD-R-31C Stock: 0 On Order: 199 Expected 21/01/2027 1.500 Expected 22/04/2027 Factory Lead Time: 23 Weeks	Rp43.113,10 Rp25.500,94 Rp22.565,58 Rp19.079,84 View Rp17.502,08 Rp16.694,86	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Toroids / Ferrite Rings 32x19.5x9mm Ni-Zn Coated ESD-R-31C-1 KEMET 1: Rp77.603,58 900Expected 21/01/2027	Mfr. Part No. ESD-R-31C-1 Mouser Part No 80-ESD-R-31C-1	KEMET	Ferrite Toroids / Ferrite Rings 32x19.5x9mm Ni-Zn Coated Learn More about KEMET emi cores	Datasheet	900Expected 21/01/2027	Rp77.603,58 Rp45.681,54 Rp40.177,74 Rp36.508,54 View Rp36.141,62 Rp33.940,10 Rp33.022,80 Rp32.288,96 Quote	Min.: 1 Mult.: 1	Ferrite Toroids / Ferrite Rings	Toroids
Ferrite Clamp On Cores 7x37.4x20.3mm Ni-Zn 65C ESD-SR-150 KEMET 1: Rp79.805,10 7.920On Order	Mfr. Part No. ESD-SR-150 Mouser Part No 80-ESD-SR-150	KEMET	Ferrite Clamp On Cores 7x37.4x20.3mm Ni-Zn 65C Learn More about KEMET emi cores	Datasheet	7.920On Order On Order Ship Dates Mfr. No: ESD-SR-150 Stock: 0 On Order: 2.320 Expected 07/12/2026 2.400 Expected 14/12/2026 3.200 Expected 28/12/2026 Factory Lead Time: 23 Weeks	Rp79.805,10 Rp46.965,76 Rp41.095,04 Rp36.875,46 View Rp34.857,40 Rp32.655,88	Min.: 1 Mult.: 1 Max.: 1.600	Ferrite Clamp On Cores	Ferrite Clamp On Cores
Ferrite Clamp On Cores 30x53x30mm 300MHz Ni-Zn 100C ESD-SR-250H KEMET 1: Rp209.144,40 660Expected 26/11/2026	Mfr. Part No. ESD-SR-250H Mouser Part No 80-ESD-SR-250H	KEMET	Ferrite Clamp On Cores 30x53x30mm 300MHz Ni-Zn 100C Learn More about KEMET emi cores	Datasheet	660Expected 26/11/2026	Rp209.144,40 Rp122.734,74 Rp119.799,38 Rp110.076,00 Rp104.939,12	Min.: 1 Mult.: 1	Ferrite Clamp On Cores	EMI, Split Snap-In Cores

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