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 (USD) 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 310ohms 100MHz 7mm Inside Dia.
Datasheet
3,412In Stock
1,760Expected 12/05/2026
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 280ohms 100MHz 7.87mm Inside Dia.
Datasheet
23,835In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 280 Ohms 7.87 mm 15.88 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 130ohms 100MHz 9.25mm Inside Dia.
Datasheet
6,108In Stock
6,160Expected 24/03/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 130 Ohms 9.25 mm 16 mm 12 mm Bulk 28
Laird Technologies Ferrite Cable Cores 243ohms 100MHz 9.25mm Inside Dia.
Datasheet
10,063In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 243 Ohms 9.25 mm 16 mm 28 mm Bulk 28
Laird Technologies Ferrite Cable Cores 91ohms 100MHz 9.52mm Inside Dia.
Datasheet
39,095In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 91 Ohms 9.52 mm 17.42 mm 6.35 mm Bulk 28
Laird Technologies Ferrite Cable Cores 139ohms 100MHz 9.52mm Inside Dia.
Datasheet
4,582In Stock
5,292Expected 07/04/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 139 Ohms 9.52 mm 17.42 mm 12.7 mm Bulk 28
Laird Technologies Ferrite Cable Cores 242ohms 100MHz 9.53mm Inside Dia.
Datasheet
7,329In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 242 Ohms 9.53 mm 17.42 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 229ohms 100MHz 11.18mm Inside Dia.
Datasheet
3,074In Stock
6,080Expected 04/05/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 229 Ohms 11.18 mm 18.67 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 250ohms 100MHz 10.16mm Inside Dia.
Datasheet
17,268In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 250 Ohms 10.16 mm 16.67 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 150ohms 100MHz 10.16mm Inside Dia.
Datasheet
9,787In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 150 Ohms 10.16 mm 16.67 mm 14.27 mm Bulk 28
Laird Technologies Ferrite Cable Cores 79ohms 100MHz 13.21mm Inside Dia.
Datasheet
7,228In Stock
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 85ohms 100MHz 13.72mm Inside Dia.
Datasheet
6,076In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 85 Ohms 13.72 mm 22.1 mm 6.35 mm Bulk 28
Laird Technologies Ferrite Cable Cores 122ohms 100MHz 13.72mm Inside Dia.
Datasheet
4,823In Stock
3,024Expected 07/04/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 122 Ohms 13.72 mm 22.1 mm 12.7 mm Bulk 28
Laird Technologies Ferrite Cable Cores 307ohms 100MHz 13.77mm Inside Dia.
Datasheet
3,401In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 307 Ohms 13.77 mm 28.5 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 114ohms 100MHz 19mm Inside Dia.
Datasheet
2,437In Stock
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 115ohms 100MHz 23mm Inside Dia.
Datasheet
5,372In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 115 Ohms 23 mm 36 mm 12.7 mm Bulk 28
Laird Technologies Ferrite Cable Cores 210ohms 100MHz 12.95mm Inside Dia.
Datasheet
1,233In Stock
2,688On Order
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 210 Ohms 12.95 mm 38.86 mm 28.58 mm Bulk 28
Laird Technologies Ferrite Cable Cores 254ohms 100MHz 16.76mm Inside Dia.
Datasheet
486In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 254 Ohms 16.76 mm 39.12 mm 22.22 mm Bulk 28
Laird Technologies Ferrite Cable Cores 442ohms 100MHz 25.4mm Inside Dia.
Datasheet
480In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 305 Ohms 25.4 mm 50.8 mm 28.7 mm Bulk 28
Laird Technologies Ferrite Cable Cores 110ohms 100MHz 18.7mm Inside Slot
Datasheet
10,138In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 266 Ohms 18.7 mm 22.8 mm 12 mm 0.7 mm 2.8 mm Bulk 28
Laird Technologies Ferrite Cable Cores 127ohms 100MHz 18.7mm Inside Slot
Datasheet
9,680In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 127 Ohms 18.7 mm 22.8 mm 16 mm 0.7 mm 2.8 mm Bulk 28
Laird Technologies Ferrite Cable Cores 112ohms 100MHz 19mm Inside Slot
Datasheet
11,734In Stock
14,000Expected 12/05/2026
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 112 Ohms 19 mm 24 mm 10 mm 1.25 mm 6.25 mm Bulk 28
Laird Technologies Ferrite Cable Cores 170ohms 100MHz 18mm Inside Slot
Datasheet
3,815In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 170 Ohms 18 mm 25 mm 16 mm 0.9 mm 7.7 mm Bulk 28
Laird Technologies Ferrite Cable Cores 168ohms 100MHz 27mm Inside Slot
Datasheet
20,175In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 168 Ohms 27 mm 37 mm 18.25 mm 1.5 mm 8 mm Bulk 28
Laird Technologies Ferrite Cable Cores 260ohms 100MHz 26mm Inside Slot
Datasheet
11,522In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 260 Ohms 26 mm 32 mm 30 mm 1 mm 7 mm Bulk 28