28x Ferrite Cable Cores

Laird Technologies 28x Ferrite Cable Cores come in four variants: split/snap-on (28A), cylindrical (28B), solid core (28R), and split core (28S). The 28x ferrite cable cores are constructed from ultra-thin mixtures of iron, nickel, and zinc oxides. They are available in cylinder, ribbon, split-flat, and clamp-on shapes. Laird Technologies 28x ferrite cable cores provide excellent differential and common mode EMI suppression on flat cable assemblies.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Impedance
Inside Diameter
Outside Diameter
Inside Length
Outside Length
Outside Width
Inside Height
Outside Height
Packaging
Core Material
Laird Technologies Ferrite Cable Cores 100ohms 100MHz 3.17mm Inside Dia.
Datasheet
9,095In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 100 Ohms 3.17 mm 8 mm 4.78 mm Bulk 28
Laird Technologies Ferrite Cable Cores 158ohms 100MHz 3.17mm Inside Dia.
Datasheet
525In Stock
9,000Expected 2026-03-24
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 158 Ohms 3.17 mm 8 mm 10.06 mm Bulk 28
Laird Technologies Ferrite Cable Cores 143ohms 100MHz 3.8mm Inside Dia.
Datasheet
8,554In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 143 Ohms 3.8 mm 8.6 mm 10 mm Bulk 28
Laird Technologies Ferrite Cable Cores 154ohms 100MHz 5.08mm Inside Dia.
Datasheet
3,965In Stock
36,000On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 154 Ohms 5.08 mm 9.53 mm 14.48 mm Bulk 28
Laird Technologies Ferrite Cable Cores 81ohms 100MHz 5.08mm Inside Dia.
Datasheet
10,784In Stock
12,000Expected 2026-05-11
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 81 Ohms 5.08 mm 9.52 mm 4.83 mm Bulk 28
Laird Technologies Ferrite Cable Cores 159ohms 100MHz 3.8mm Inside Dia.
Datasheet
2,224In Stock
15,552On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 159 Ohms 3.8 mm 9.75 mm 10 mm Bulk 28
Laird Technologies Ferrite Cable Cores 322ohms 100MHz 3.8mm Inside Dia.
Datasheet
4,279In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 322 Ohms 3.8 mm 9.75 mm 25 mm Bulk 28
Laird Technologies Ferrite Cable Cores 128ohms 100MHz 6.35mm Inside Dia.
Datasheet
5,891In Stock
5,832Expected 2026-02-17
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 128 Ohms 6.35 mm 9.91 mm 15 mm Bulk 28
Laird Technologies Ferrite Cable Cores 83 ohms 100MHz 5.97 mm Inside Dia.
Datasheet
6,954In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 83 Ohms 5.97 mm 10.01 mm 6.17 mm Bulk 28
Laird Technologies Ferrite Cable Cores Solid Broadband 262 Ohms 100MHz
Datasheet
810In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 262 Ohms 4.9 mm 11.5 mm 25 mm Bulk 28
Laird Technologies Ferrite Cable Cores 195ohms 100MHz 3.55mm Inside Dia.
Datasheet
2,079In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 195 Ohms 3.55 mm 12 mm 10 mm Bulk 28
Laird Technologies Ferrite Cable Cores 424ohms 100MHz 3.55mm Inside Dia.
Datasheet
2,371In Stock
5,616Expected 2026-04-07
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 424 Ohms 3.55 mm 12 mm 25 mm Bulk 28
Laird Technologies Ferrite Cable Cores Rnd,Sld,BB,CSNO Solid
Datasheet
1,703In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 245 Ohms 4.5 mm 12 mm 20 mm Bulk 28
Laird Technologies Ferrite Cable Cores 300ohms 100MHz 6.99mm Inside Dia.
Datasheet
1,398In Stock
1,760Expected 2026-04-07
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 300 Ohms 6.99 mm 14.99 mm 27.94 mm Bulk 28
Laird Technologies Ferrite Cable Cores 450ohms 100MHz 5.9mm Inside Dia.
Datasheet
213In Stock
2,640Expected 2026-05-01
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 377 Ohms 5.9 mm 14.99 mm 35 mm Bulk 28
Laird Technologies Ferrite Cable Cores 310ohms 100MHz 7mm Inside Dia.
Datasheet
1,212In Stock
3,960On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 310 Ohms 7 mm 15.65 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 79ohms 100MHz 13.21mm Inside Dia.
Datasheet
3,388In Stock
3,840Expected 2026-02-17
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 79 Ohms 13.21 mm 20.95 mm 6.35 mm Bulk 28
Laird Technologies Ferrite Cable Cores 210ohms 100MHz 13.77mm Inside Dia.
Datasheet
146In Stock
540Expected 2026-04-21
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 210 Ohms 13.77 mm 28.5 mm 20 mm Bulk 28
Laird Technologies Ferrite Cable Cores 85ohms 100MHz 19mm Inside Dia.
Datasheet
418In Stock
1,440Expected 2026-02-17
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 85 Ohms 19 mm 29.01 mm 7.49 mm Bulk 28
Laird Technologies Ferrite Cable Cores 114ohms 100MHz 19mm Inside Dia.
Datasheet
1,429In Stock
1,008Expected 2026-02-17
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 114 Ohms 19 mm 29.01 mm 13.84 mm Bulk 28
Laird Technologies Ferrite Cable Cores 186ohms 100MHz 19.05mm Inside Dia.
Datasheet
753In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 186 Ohms 19.05 mm 31.75 mm 22.22 mm Bulk 28
Laird Technologies Ferrite Cable Cores 182ohms 100MHz 8mm Inside Slot
Datasheet
3,792In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 182 Ohms 8 mm 11.5 mm 20 mm 0.7 mm 3 mm Bulk 28
Laird Technologies Ferrite Cable Cores 227ohms 100MHz 10mm Inside Slot
Datasheet
2,568In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 227 Ohms 10 mm 15.01 mm 22.86 mm 1.5 mm 7.49 mm Bulk 28
Laird Technologies Ferrite Cable Cores 80ohms 100MHz 13.5mm Inside Slot
Datasheet
9,799In Stock
7,980Expected 2026-04-22
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 80 Ohms 13.5 mm 15.5 mm 10 mm 1.4 mm 3.4 mm Bulk 28
Laird Technologies Ferrite Cable Cores 98ohms 100MHz 13.6mm Inside Slot
Datasheet
7,195In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 245 Ohms 13.6 mm 15.6 mm 12 mm 0.7 mm 2.8 mm Bulk 28