Passive Components – Mouser Singapore

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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 (SGD) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Clamp On Cores 53x19mm 10MHz Mn-Zn 85C ESD-SR-S47M KEMET 1: $19.64 372In 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	372In Stock	$19.64 $11.03 $9.47 $9.18 $9.17	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 1mm B-20L-25 KEMET 1: $0.258 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	$0.258 $0.188 $0.158 $0.141 View $0.129 $0.122 $0.101	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 1.6mm B-20L-44 KEMET 1: $0.218 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	$0.218 $0.171 $0.151 $0.14 View $0.131 $0.125 $0.113 $0.095	Min.: 1 Mult.: 1
Ferrite Cable Cores 56x2mm Split Core Ni-Zn for Flat Cable ESD-FPD-40-1 KEMET 1: $13.33 339In 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	339In Stock	$13.33 $8.98 $7.52 $6.51 View $5.78 $5.77	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm ESD-R-38D-B KEMET 1: $13.42 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	$13.42 $9.57 $8.01 $6.94 View $6.26 $6.24	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 6x18.5x14mm Ni-Zn 65C ESD-SR-S10 KEMET 1: $3.62 6,146In 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	6,146In Stock	$3.62 $2.41 $2.05 $1.82 View $1.59 $1.39 $1.26 $1.19	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 0.8mm B-20L-34 KEMET 1: $0.476 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	$0.476 $0.333 $0.258 $0.23 View $0.196 $0.159 $0.144 $0.118	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 6mm ESD-R-12D KEMET 1: $2.77 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	$2.77 $1.90 $1.65 $1.46 View $1.27 $1.06 $0.918	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 9x39x20mm Ni-Zn 65C ESD-SR-160 KEMET 1: $5.74 5,314In Stock	Mfr. Part No. ESD-SR-160 Mouser Part No 80-ESD-SR-160	KEMET	Ferrite Clamp On Cores 9x39x20mm Ni-Zn 65C Learn More about KEMET emi cores	Datasheet	5,314In Stock	$5.74 $4.07 $3.50 $3.06 View $2.65 $2.42 $2.23 $2.11	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 10.5mm ESD-R-15C KEMET 1: $1.78 100In Stock 800Expected 13/4/2027	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 13/4/2027	$1.78 $1.24 $1.06 $0.937 View $0.838 $0.677 $0.607	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 15x5x9mm 10MHz Mn-Zn 120C ESD-R-12M-H KEMET 1: $1.93 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	$1.93 $1.30 $1.14 $1.02 View $0.91 $0.753 $0.695 $0.643	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 6.2mm ESD-R-14A KEMET 1: $1.17 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	$1.17 $0.816 $0.704 $0.626 View $0.554 $0.466 $0.394 $0.358 $0.345	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 31.5x13x38mm Ni-Zn Snap-on ESD-SR-250G KEMET 1: $11.57 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	$11.57 $7.78 $6.56 $5.47 View $5.05 $4.88	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 15.5x18.5mm 300MHz Mn-Zn 85C ESD-SR-S10M KEMET 1: $6.70 504In 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	504In Stock	$6.70 $4.60 $3.90 $3.43 View $2.98 $2.83 $2.82	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 19x10.7x5.3mm Ni-Zn Coated ESD-R-19E-1 KEMET 1: $5.32 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	$5.32 $3.64 $3.10 $2.48 View $2.12 $1.96	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 8.8mm ESD-R-19B KEMET 1: $3.88 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	$3.88 $2.67 $2.28 $2.01 View $1.75 $1.46 $1.36	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 29x12.7x16mm 300MHz Ni-Zn 120C ESD-R-25N-H KEMET 1: $4.68 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	$4.68 $3.22 $2.73 $2.39 View $2.08 $1.77 $1.74 $1.69	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 48.5x26x16mm Mn-Zn Coated ESD-R-47-P KEMET 1: $17.80 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	$17.80 $11.91 $9.96 $8.80 $8.68	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 61x33.2x25mm 300MHz Ni-Zn 120C ESD-R-57N-H KEMET 1: $29.95 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	$29.95 $18.54 $16.08 $15.04	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: $5.25 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	$5.25 $3.60 $3.06 $2.69 View $2.34 $2.22	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: $3.09 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	$3.09 $2.12 $1.82 $1.60 View $1.40 $1.19	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: $3.47 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	$3.47 $2.39 $2.04 $1.80 View $1.70 $1.58 $1.56	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: $6.13 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	$6.13 $4.20 $3.56 $3.13 View $2.71 $2.67	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: $7.77 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	$7.77 $5.29 $4.47 $4.00 View $3.96 $3.94 $3.92	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: $4.35 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	$4.35 $3.01 $2.56 $2.24 View $1.96 $1.78	Min.: 1 Mult.: 1

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EMI Cores

Types of Passive Components