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 Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 ESD-R-421617XH-R1 KEMET 1: $7.87 226In Stock	Mfr. Part No. ESD-R-421617XH-R1 Mouser Part No 80-ESD-R-421617XH-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	226In Stock	$7.87 $5.36 $4.53 $3.96 $3.56	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal,Mn-Zn -40/+120C UL94 V-0 HR1 ESD-R-512419XH-R1 KEMET 1: $11.10 78In Stock	Mfr. Part No. ESD-R-512419XH-R1 Mouser Part No 80-ESD-R-512419XH-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	78In Stock	$11.10 $7.49 $6.30 $5.47 $5.33	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings High Heat Resistance with Case Toroidal Mn-Zn -40/+120C UL94 V-0 HR1 ESD-R-613325XH-R1 KEMET 1: $27.93 70In Stock	Mfr. Part No. ESD-R-613325XH-R1 Mouser Part No 80-ESD-R-613325XH-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	70In Stock	$27.93 $18.28 $17.60 $17.58	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 5x28x14.4x14.2mm ESD-SR-130527X-R1 KEMET 1: $3.71 1,206In Stock	Mfr. Part No. ESD-SR-130527X-R1 Mouser Part No 80-ESD-SR-130527X-R1	KEMET	Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 5x28x14.4x14.2mm Learn More about KEMET emi cores	Datasheet	1,206In Stock	$3.71 $2.57 $2.19 $1.93 View $1.69 $1.48	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 6x33x16x16.4mm ESD-SR-150632X-R1 KEMET 1: $4.04 996In Stock	Mfr. Part No. ESD-SR-150632X-R1 Mouser Part No 80-ESD-SR-150632X-R1	KEMET	Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 6x33x16x16.4mm Learn More about KEMET emi cores	Datasheet	996In Stock	$4.04 $2.79 $2.37 $2.09 View $1.82 $1.63	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 674In 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	674In Stock	$5.25 $3.60 $3.06 $2.69 View $2.34 $2.22	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 9x39x20.2x20mm ESD-SR-190938X-R1 KEMET 1: $5.26 683In Stock	Mfr. Part No. ESD-SR-190938X-R1 Mouser Part No 80-ESD-SR-190938X-R1	KEMET	Ferrite Clamp On Cores Mn-Zn HR1 Round Snap On 500MHz 85C 9x39x20.2x20mm Learn More about KEMET emi cores	Datasheet	683In Stock	$5.26 $3.62 $3.07 $2.69 View $2.34 $2.23	Min.: 1 Mult.: 1
Ferrite Cable Cores Split Core Flat 25.4mm Cable ESD-FPD-16 KEMET 1: $9.45 906In Stock	Mfr. Part No. ESD-FPD-16 Mouser Part No 80-ESD-FPD-16	KEMET	Ferrite Cable Cores Split Core Flat 25.4mm Cable Learn More about KEMET Kemet EMI Cores	Datasheet	906In Stock	$9.45 $6.42 $5.41 $4.71 $4.42	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 10mm ESD-R-19S KEMET 1: $2.71 2,774In Stock 480Expected 29/12/2026	Mfr. Part No. ESD-R-19S Mouser Part No 80-ESD-R-19S	KEMET	Ferrite Toroids / Ferrite Rings 10mm Learn More about KEMET emi cores	Datasheet	2,774In Stock 480Expected 29/12/2026	$2.71 $1.88 $1.60 $1.41 View $1.24 $1.02	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 25.5mm ESD-R-47 KEMET 1: $9.15 688In Stock	Mfr. Part No. ESD-R-47 Mouser Part No 80-ESD-R-47	KEMET	Ferrite Toroids / Ferrite Rings 25.5mm Learn More about KEMET emi cores	Datasheet	688In Stock	$9.15 $5.47 $4.76 $4.38 $4.24	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 13x38x31.6mm Ni-Zn 65C ESD-SR-250 KEMET 1: $12.39 894In Stock 1,320Expected 14/12/2026	Mfr. Part No. ESD-SR-250 Mouser Part No 80-ESD-SR-250	KEMET	Ferrite Clamp On Cores 13x38x31.6mm Ni-Zn 65C Learn More about KEMET emi cores	Datasheet	894In Stock 1,320Expected 14/12/2026	$12.39 $8.45 $7.15 $6.01 $5.59	Min.: 1 Mult.: 1
Ferrite Clamp On Cores 30x53x30mm 300MHz Ni-Zn 100C ESD-SR-250H KEMET 1: $16.08 300In Stock 360Expected 29/12/2026	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	300In Stock 360Expected 29/12/2026	$16.08 $10.77 $9.00 $7.78	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 2.4mm B-20L-48B KEMET 1: $0.394 13,639In Stock 80,000On Order	Mfr. Part No. B-20L-48B Mouser Part No 80-B-20L-48B	KEMET	Ferrite Cable Cores Ferrite Bead Core EMI 2.4mm Learn More about KEMET Kemet EMI Cores	Datasheet	13,639In Stock 80,000On Order On Order Ship Dates Mfr. No: B-20L-48B Stock: 13,639 Can Dispatch Immediately On Order: 40,000 Expected 7/1/2027 40,000 Expected 9/2/2027 Factory Lead Time: 26 Weeks	$0.394 $0.279 $0.216 $0.182 View $0.165 $0.146 $0.128 $0.116 $0.109	Min.: 1 Mult.: 1
Ferrite Cable Cores 4.8x2.4mm 300MHz Ni-Zn Bare B-20L-48B-L KEMET 1: $0.354 8,845In Stock 35,000Expected 10/5/2027	Mfr. Part No. B-20L-48B-L Mouser Part No 80-B-20L-48B-L	KEMET	Ferrite Cable Cores 4.8x2.4mm 300MHz Ni-Zn Bare Learn More about KEMET emi cores	Datasheet	8,845In Stock 35,000Expected 10/5/2027	$0.354 $0.248 $0.204 $0.171 View $0.147 $0.135 $0.118 $0.095 $0.091	Min.: 1 Mult.: 1
Ferrite Cable Cores Ferrite Bead Core EMI 4.8mm B-20L-95B KEMET 1: $1.01 1,415In Stock 15,000Expected 8/3/2027	Mfr. Part No. B-20L-95B Mouser Part No 80-B-20L-95B	KEMET	Ferrite Cable Cores Ferrite Bead Core EMI 4.8mm Learn More about KEMET Kemet EMI Cores	Datasheet	1,415In Stock 15,000Expected 8/3/2027	$1.01 $0.704 $0.608 $0.541 View $0.48 $0.405 $0.354 $0.345 $0.324	Min.: 1 Mult.: 1
Ferrite Cable Cores Split Core Flat 25.4mm Cable ESD-FPD-16-1 KEMET 1: $9.83 30In Stock 1,600On Order	Mfr. Part No. ESD-FPD-16-1 Mouser Part No 80-ESD-FPD-16-1	KEMET	Ferrite Cable Cores Split Core Flat 25.4mm Cable Learn More about KEMET emi cores	Datasheet	30In Stock 1,600On Order On Order Ship Dates Mfr. No: ESD-FPD-16-1 Stock: 30 Can Dispatch Immediately On Order: 800 Expected 6/1/2027 800 Expected 18/1/2027 Factory Lead Time: 26 Weeks	$9.83 $6.66 $5.62 $4.88 $4.52	Min.: 1 Mult.: 1
Ferrite Cable Cores Split Core Flat 48.3mm Cable ESD-FPD-34 KEMET 1: $11.51 248In Stock 240Expected 18/1/2027	Mfr. Part No. ESD-FPD-34 Mouser Part No 80-ESD-FPD-34	KEMET	Ferrite Cable Cores Split Core Flat 48.3mm Cable Learn More about KEMET emi cores	Datasheet	248In Stock 240Expected 18/1/2027	$11.51 $7.77 $6.72 $5.68 $5.43	Min.: 1 Mult.: 1
Ferrite Cable Cores 68.6x2mm Split Core Ni-Zn for Flat Cable ESD-FPD-50 KEMET 1: $13.82 124In Stock	Mfr. Part No. ESD-FPD-50 Mouser Part No 80-ESD-FPD-50	KEMET	Ferrite Cable Cores 68.6x2mm Split Core Ni-Zn for Flat Cable Learn More about KEMET emi cores	Datasheet	124In Stock	$13.82 $9.29 $7.78 $6.90	Min.: 1 Mult.: 1
Ferrite Cable Cores Split Core Flat 68.6mm Cable ESD-FPD-50-1 KEMET 1: $14.27 123In Stock	Mfr. Part No. ESD-FPD-50-1 Mouser Part No 80-ESD-FPD-50-1	KEMET	Ferrite Cable Cores Split Core Flat 68.6mm Cable Learn More about KEMET emi cores	Datasheet	123In Stock	$14.27 $9.59 $8.02 $7.15	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 7.3mm ESD-R-12C-2 KEMET 1: $1.63 1,400In Stock	Mfr. Part No. ESD-R-12C-2 Mouser Part No 80-ESD-R-12C-2	KEMET	Ferrite Toroids / Ferrite Rings 7.3mm Learn More about KEMET emi cores	Datasheet	1,400In Stock	$1.63 $1.14 $0.976 $0.866 View $0.764 $0.639 $0.566	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 12x7x15mm Ni-Zn Coated ESD-R-12CM KEMET 1: $1.86 84In Stock 1,500Expected 2/2/2027	Mfr. Part No. ESD-R-12CM Mouser Part No 80-ESD-R-12CM	KEMET	Ferrite Toroids / Ferrite Rings 12x7x15mm Ni-Zn Coated Learn More about KEMET emi cores	Datasheet	84In Stock 1,500Expected 2/2/2027	$1.86 $1.29 $1.10 $0.975 View $0.858 $0.704 $0.632 $0.623	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 7.3mm ESD-R-12E KEMET 1: $1.03 3,000In Stock	Mfr. Part No. ESD-R-12E Mouser Part No 80-ESD-R-12E	KEMET	Ferrite Toroids / Ferrite Rings 7.3mm Learn More about KEMET emi cores	Datasheet	3,000In Stock	$1.03 $0.718 $0.623 $0.555 View $0.491 $0.415 $0.362 $0.339 $0.322	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 15x5x9mm 300MHz Ni-Zn 120C ESD-R-12N-H KEMET 1: $2.00 257In Stock	Mfr. Part No. ESD-R-12N-H Mouser Part No 80-ESD-R-12N-H	KEMET	Ferrite Toroids / Ferrite Rings 15x5x9mm 300MHz Ni-Zn 120C Learn More about KEMET emi cores	Datasheet	257In Stock	$2.00 $1.40 $1.20 $1.06 View $0.932 $0.748 $0.719	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 7mm ESD-R-14C KEMET 1: $0.707 2,603In Stock 6,000Expected 2/2/2027	Mfr. Part No. ESD-R-14C Mouser Part No 80-ESD-R-14C	KEMET	Ferrite Toroids / Ferrite Rings 7mm Learn More about KEMET emi cores	Datasheet	2,603In Stock 6,000Expected 2/2/2027	$0.707 $0.496 $0.432 $0.344 View $0.341 $0.29 $0.245 $0.222 $0.216	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings 7mm ESD-R-14C-2 KEMET 1: $0.911 1,140In Stock	Mfr. Part No. ESD-R-14C-2 Mouser Part No 80-ESD-R-14C-2	KEMET	Ferrite Toroids / Ferrite Rings 7mm Learn More about KEMET emi cores	Datasheet	1,140In Stock	$0.911 $0.722 $0.623 $0.555 View $0.491 $0.415 $0.362 $0.356 $0.333	Min.: 1 Mult.: 1

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EMI Cores

Types of Passive Components