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Common Mode Filtering Toroid & Balun Cores

Laird Common Mode Toroid and Balun Cores suppress unintended signals on or being emitted from cables or wires by acting on the magnetic fields surrounding them. If the unintended signals are not addressed, they can interfere with electronics and/or cause a failure to meet government emissions standards or susceptibility regulations. The toroid and balun cores from Laird offer permeability ratings of 125, 850, 1700, or 5000, along with a wide range of frequency options (low, mid, high, and broad) and various coating options (perylene or epoxy).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Toroids / Ferrite Rings FT,MnZn,PC3.43X1.78X2.06-5000 35T0135-10P Laird 1: $0.26 119,268In Stock	Mfr. Part # 35T0135-10P Mouser Part # 739-35T0135-10P	Laird	Ferrite Toroids / Ferrite Rings FT,MnZn,PC3.43X1.78X2.06-5000 Learn More about Laird common mode cores	Datasheet	119,268In Stock	$0.26 $0.062 $0.055 $0.044 View $0.039 $0.034 $0.03 $0.023 $0.021	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MNZN,EC 35T1000-00H Laird 1: $10.86 360In Stock	Mfr. Part # 35T1000-00H Mouser Part # 739-35T1000-00H	Laird	Ferrite Toroids / Ferrite Rings FT,MNZN,EC Learn More about Laird common mode cores	Datasheet	360In Stock	$10.86 $7.33 $6.16 $5.36 View $4.59 $4.58 $4.56	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.14X4.78-5000 35T0501-00H Laird 1: $1.03 1,352In Stock	Mfr. Part # 35T0501-00H Mouser Part # 739-35T0501-00H	Laird	Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.14X4.78-5000 Learn More about Laird common mode cores	Datasheet	1,352In Stock	$1.03 $0.719 $0.633 $0.563 View $0.498 $0.421 $0.367 $0.351 $0.328	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.14X6.35-5000 35T0501-10H Laird 1: $1.52 2,924In Stock	Mfr. Part # 35T0501-10H Mouser Part # 739-35T0501-10H	Laird	Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.14X6.35-5000 Learn More about Laird common mode cores	Datasheet	2,924In Stock	$1.52 $1.06 $0.911 $0.809 View $0.714 $0.598 $0.567 $0.563 $0.562	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.92X6.35-5000 35T0500-10H Laird 1: $1.40 3,068In Stock	Mfr. Part # 35T0500-10H Mouser Part # 739-35T0500-10H	Laird	Ferrite Toroids / Ferrite Rings FT,MnZn,EC12.70X7.92X6.35-5000 Learn More about Laird common mode cores	Datasheet	3,068In Stock	$1.40 $0.971 $0.831 $0.737 View $0.664 $0.545 $0.511 $0.493 $0.482	Min.: 1 Mult.: 1
Ferrite Cable Cores FT,NiZn,PC3.94X2.24X1.27-850 28T0155-10P Laird 1: $0.247 199,700In Stock	Mfr. Part # 28T0155-10P Mouser Part # 739-28T0155-10P	Laird	Ferrite Cable Cores FT,NiZn,PC3.94X2.24X1.27-850 Learn More about Laird common mode cores	Datasheet	199,700In Stock	$0.247 $0.111 $0.095 $0.077 View $0.066 $0.059 $0.053 $0.04	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MnZn,EC,Black9.53x4.75x3.18mmx5000. 35T0375-10H Laird 1: $0.702 1,662In Stock	Mfr. Part # 35T0375-10H Mouser Part # 739-35T0375-10H	Laird	Ferrite Toroids / Ferrite Rings FT,MnZn,EC,Black9.53x4.75x3.18mmx5000. Learn More about Laird common mode cores	Datasheet	1,662In Stock	$0.702 $0.49 $0.425 $0.38 View $0.337 $0.286 $0.25 $0.229 $0.213	Min.: 1 Mult.: 1
Ferrite Toroids / Ferrite Rings FT,MNZN,EC 35T1417-00H Laird 1: $12.70 195In Stock	Mfr. Part # 35T1417-00H Mouser Part # 739-35T1417-00H	Laird	Ferrite Toroids / Ferrite Rings FT,MNZN,EC Learn More about Laird common mode cores	Datasheet	195In Stock	$12.70 $8.54 $7.16 $6.29 View $5.27 $5.16	Min.: 1 Mult.: 1
Ferrite Cable Cores FB,NiZn,PC3.48x2.03x1.52x125* 25N0136-10P Laird 300,000: $0.026 Non-Stocked	Mfr. Part # 25N0136-10P Mouser Part # 739-25N0136-10P	Laird	Ferrite Cable Cores FB,NiZn,PC3.48x2.03x1.52x125* Learn More about Laird common mode cores	Datasheet	Non-Stocked	$0.026	Min.: 300,000 Mult.: 300,000
Ferrite Cable Cores FB,NiZn,PC7.04X4.06X6.20-125 25N0277-00P Laird 10,000: $0.226 Non-Stocked	Mfr. Part # 25N0277-00P Mouser Part # 739-25N0277-00P	Laird	Ferrite Cable Cores FB,NiZn,PC7.04X4.06X6.20-125 Learn More about Laird common mode cores	Datasheet	Non-Stocked	$0.226	Min.: 10,000 Mult.: 10,000
Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.52-125 25T0135-60P Laird 200,000: $0.026 Non-Stocked	Mfr. Part # 25T0135-60P Mouser Part # 739-25T0135-60P	Laird	Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.52-125 Learn More about Laird common mode cores	Datasheet	Non-Stocked	$0.026	Min.: 200,000 Mult.: 200,000
Ferrite Cable Cores FT,NiZn,PC3.96x2.21x1.30x125* 25T0155-10P Laird 200,000: $0.027 Non-Stocked	Mfr. Part # 25T0155-10P Mouser Part # 739-25T0155-10P	Laird	Ferrite Cable Cores FT,NiZn,PC3.96x2.21x1.30x125* Learn More about Laird common mode cores	Datasheet	Non-Stocked	$0.027	Min.: 200,000 Mult.: 200,000
Ferrite Cable Cores FT,NiZn,UC5.1x1.70x6.35MMx125U 25T0202-000 Laird 15,000: $0.135 Non-Stocked	Mfr. Part # 25T0202-000 Mouser Part # 739-25T0202-000	Laird	Ferrite Cable Cores FT,NiZn,UC5.1x1.70x6.35MMx125U Learn More about Laird common mode cores	Datasheet	Non-Stocked	$0.135	Min.: 15,000 Mult.: 15,000
Ferrite Cable Cores FT,NiZn,PC2.54X1.27X1.27-850 28T0100-00P Laird 500,000: $0.012 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0100-00P Mouser Part # 739-28T0100-00P	Laird	Ferrite Cable Cores FT,NiZn,PC2.54X1.27X1.27-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.012	Min.: 500,000 Mult.: 500,000
Ferrite Cable Cores FT,NiZn,PC2.54X1.27X0.76-850 28T0100-20P Laird 500,000: $0.01 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0100-20P Mouser Part # 739-28T0100-20P	Laird	Ferrite Cable Cores FT,NiZn,PC2.54X1.27X0.76-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.01	Min.: 500,000 Mult.: 500,000
Ferrite Cable Cores FT,NiZn,PC2.54X1.27X0.99-850 28T0100-30P Laird 500,000: $0.013 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0100-30P Mouser Part # 739-28T0100-30P	Laird	Ferrite Cable Cores FT,NiZn,PC2.54X1.27X0.99-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.013	Min.: 500,000 Mult.: 500,000
Ferrite Cable Cores FT,NiZn,PC3.05X1.27X1.27-850 28T0119-00P Laird 300,000: $0.016 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # 28T0119-00P Mouser Part # 739-28T0119-00P	Laird	Ferrite Cable Cores FT,NiZn,PC3.05X1.27X1.27-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 14 Weeks	$0.016	Min.: 300,000 Mult.: 300,000
Ferrite Cable Cores FT,NiZn,PC3.05X1.27X0.76-850 28T0119-10P Laird 500,000: $0.013 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0119-10P Mouser Part # 739-28T0119-10P	Laird	Ferrite Cable Cores FT,NiZn,PC3.05X1.27X0.76-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.013	Min.: 500,000 Mult.: 500,000
Ferrite Cable Cores FT,NiZn,EC3.07x1.5x2.08mmx850. 28T0121-20P Laird 150,000: $0.13 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0121-20P Mouser Part # 739-28T0121-20P	Laird	Ferrite Cable Cores FT,NiZn,EC3.07x1.5x2.08mmx850. Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.13	Min.: 150,000 Mult.: 150,000
Ferrite Cable Cores FT,NiZn,PC3.05X1.65X1.65-850 28T0122-00P Laird 300,000: $0.02 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # 28T0122-00P Mouser Part # 739-28T0122-00P	Laird	Ferrite Cable Cores FT,NiZn,PC3.05X1.65X1.65-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 14 Weeks	$0.02	Min.: 300,000 Mult.: 300,000
Ferrite Cable Cores FT,NiZn,PC3.30X1.27X1.27-850 28T0130-00P Laird 200,000: $0.031 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0130-00P Mouser Part # 739-28T0130-00P	Laird	Ferrite Cable Cores FT,NiZn,PC3.30X1.27X1.27-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.031	Min.: 200,000 Mult.: 200,000
Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.27-850 28T0135-00P Laird 300,000: $0.018 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0135-00P Mouser Part # 739-28T0135-00P	Laird	Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.27-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.018	Min.: 300,000 Mult.: 300,000
Ferrite Cable Cores FT,NiZn,PC3.43X1.78X2.06-850 28T0135-10P Laird 150,000: $0.022 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0135-10P Mouser Part # 739-28T0135-10P	Laird	Ferrite Cable Cores FT,NiZn,PC3.43X1.78X2.06-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.022	Min.: 150,000 Mult.: 150,000
Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.52-850 28T0135-60P Laird 200,000: $0.018 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0135-60P Mouser Part # 739-28T0135-60P	Laird	Ferrite Cable Cores FT,NiZn,PC3.43X1.78X1.52-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.018	Min.: 200,000 Mult.: 200,000
Ferrite Cable Cores FT,NiZn,PC3.94X1.78X1.78-850 28T0153-70P Laird 150,000: $0.033 Non-Stocked Lead-Time 13 Weeks	Mfr. Part # 28T0153-70P Mouser Part # 739-28T0153-70P	Laird	Ferrite Cable Cores FT,NiZn,PC3.94X1.78X1.78-850 Learn More about Laird common mode cores	Datasheet	Non-Stocked Lead-Time 13 Weeks	$0.033	Min.: 150,000 Mult.: 150,000

Common Mode Filtering Toroid & Balun Cores

Types of Passive Components

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Common Mode Filtering Toroid & Balun Cores

Types of Passive Components