28x Ferrite Cable Cores

Laird 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 28x ferrite cable cores provide excellent differential and common mode EMI suppression on flat cable assemblies.

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Description Datasheet Availability Pricing (EUR) 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 Ferrite Cable Cores 194ohms 100MHz 5.08mm Inside Dia.
Datasheet
15 382In Stock
18 432On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 194 Ohms 5.08 mm 9.53 mm 19.05 mm Bulk 28
Laird Ferrite Cable Cores 81ohms 100MHz 5.08mm Inside Dia.
Datasheet
18 743In Stock
24 000Expected 02/11/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 81 Ohms 5.08 mm 9.52 mm 4.83 mm Bulk 28
Laird Ferrite Cable Cores Impedance is 279 349 ohm@100MHz
Datasheet
24 429In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 349 Ohms 5 mm 11 mm 32 mm Bulk 28
Laird Ferrite Cable Cores 320ohms 100MHz 4.88mm Inside Dia.
Datasheet
20 709In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 320 Ohms 4.88 mm 12.32 mm 25.4 mm Bulk 28
Laird Ferrite Cable Cores 184ohms 100MHz 6.35mm Inside Dia.
Datasheet
34 624In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 184 Ohms 6.35 mm 14.27 mm 13.46 mm Bulk 28
Laird Ferrite Cable Cores 317ohms 100MHz 6.35mm Inside Dia.
Datasheet
27 553In Stock
112 420On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 317 Ohms 6.35 mm 14.27 mm 25.58 mm Bulk 28
Laird Ferrite Cable Cores 270ohms 100MHz 6.35mm Inside Dia.
Datasheet
5 768In Stock
4 400Expected 26/10/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 270 Ohms 6.35 mm 14.27 mm 28.32 mm Bulk 28
Laird Ferrite Cable Cores 173ohms 100MHz 7.26mm Inside Dia.
Datasheet
10 140In Stock
30 240On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 173 Ohms 7.26 mm 14.27 mm 15.24 mm Bulk 28
Laird Ferrite Cable Cores 287ohms 100MHz 7.26mm Inside Dia.
Datasheet
10 977In Stock
20 240Expected 02/11/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 287 Ohms 7.26 mm 14.27 mm 28.57 mm Bulk 28
Laird Ferrite Cable Cores 300ohms 100MHz 6.99mm Inside Dia.
Datasheet
6 575In Stock
4 840Expected 30/09/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 300 Ohms 6.99 mm 14.99 mm 27.94 mm Bulk 28
Laird Ferrite Cable Cores 450ohms 100MHz 5.9mm Inside Dia.
Datasheet
2 095In Stock
6 160On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 377 Ohms 5.9 mm 14.99 mm 35 mm Bulk 28
Laird Ferrite Cable Cores 653ohms 100MHz 4.5mm Inside Dia.
Datasheet
2 539In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 653 Ohms 4.5 mm 15 mm 40 mm Bulk 28
Laird Ferrite Cable Cores 280ohms 100MHz 7.87mm Inside Dia.
Datasheet
21 574In Stock
27 720Expected 20/10/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 280 Ohms 7.87 mm 15.88 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 130ohms 100MHz 9.25mm Inside Dia.
Datasheet
15 850In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 130 Ohms 9.25 mm 16 mm 12 mm Bulk 28
Laird Ferrite Cable Cores 243ohms 100MHz 9.25mm Inside Dia.
Datasheet
2 753In Stock
11 000On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 243 Ohms 9.25 mm 16 mm 28 mm Bulk 28
Laird Ferrite Cable Cores 242ohms 100MHz 9.53mm Inside Dia.
Datasheet
5 052In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 242 Ohms 9.53 mm 17.42 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 229ohms 100MHz 11.18mm Inside Dia.
Datasheet
4 241In Stock
12 800On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 229 Ohms 11.18 mm 18.67 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 250ohms 100MHz 10.16mm Inside Dia.
Datasheet
5 642In Stock
10 240Expected 08/10/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 250 Ohms 10.16 mm 16.67 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 150ohms 100MHz 10.16mm Inside Dia.
Datasheet
4 390In Stock
3 780Expected 18/08/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 150 Ohms 10.16 mm 16.67 mm 14.27 mm Bulk 28
Laird Ferrite Cable Cores 141 ohms 100MHz 11.64 mm Inside Dia.
Datasheet
5 793In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 141 Ohms 13.1 mm 19.64 mm 12.7 mm 11.64 mm 5.1 mm Bulk 28
Laird Ferrite Cable Cores 122ohms 100MHz 13.72mm Inside Dia.
Datasheet
5 160In Stock
3 528Expected 15/09/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 122 Ohms 13.72 mm 22.1 mm 12.7 mm Bulk 28
Laird Ferrite Cable Cores 151ohms 100MHz 12.7mm Inside Dia.
Datasheet
6 243In Stock
36 015On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 151 Ohms 12.7 mm 25.4 mm 12.7 mm Bulk 28
Laird Ferrite Cable Cores 276ohms 100MHz 12.83mm Inside Dia.
Datasheet
8 845In Stock
10 080Expected 30/09/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 276 Ohms 12.83 mm 25.91 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 85ohms 100MHz 19mm Inside Dia.
Datasheet
2 468In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 85 Ohms 19 mm 29.01 mm 7.49 mm Bulk 28
Laird Ferrite Cable Cores 186ohms 100MHz 19.05mm Inside Dia.
Datasheet
2 132In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 186 Ohms 19.05 mm 31.75 mm 22.22 mm Bulk 28