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 (PEN) 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 230ohms 100MHz 52.07mm Inside Slot
Datasheet
3,611In Stock
Min.: 1
Mult.: 1

28S Flat Ribbon Cable Cores Split 230 Ohms 53.75 mm 67.08 mm 27.53 mm 0.84 mm 6.35 mm Bulk 28
Laird Ferrite Cable Cores 91ohms 100MHz 9.52mm Inside Dia.
Datasheet
37,540In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 91 Ohms 9.52 mm 17.42 mm 6.35 mm Bulk 28
Laird Ferrite Cable Cores 127ohms 100MHz 18.7mm Inside Slot
Datasheet
8,217In 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 Ferrite Cable Cores 110ohms 100MHz 13mm Inside Slot
Datasheet
11,220In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 110 Ohms 13 mm 17 mm 12 mm 0.75 mm 3.5 mm Bulk 28
Laird Ferrite Cable Cores 220ohms 100MHz 23.5mm Inside Slot
Datasheet
1,835In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 220 Ohms 23.5 mm 28.58 mm 31 mm 1.7 mm 7.7 mm Bulk 28
Laird Ferrite Cable Cores 110ohms 100MHz 18.7mm Inside Slot
Datasheet
9,970In 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 Ferrite Cable Cores 159ohms 100MHz 3.8mm Inside Dia.
Datasheet
14,946In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 159 Ohms 3.8 mm 9.75 mm 10 mm Bulk 28
Laird Ferrite Cable Cores 168ohms 100MHz 27mm Inside Slot
Datasheet
18,346In 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 Ferrite Cable Cores 210ohms 100MHz 12.95mm Inside Dia.
Datasheet
3,575In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 210 Ohms 12.95 mm 38.86 mm 28.58 mm Bulk 28
Laird Ferrite Cable Cores 123 ohms 100 MHz 21mm Internal Slot
Datasheet
7,777In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 123 Ohms 21 mm 25 mm 15 mm 0.8 mm 3 mm Bulk 28
Laird Ferrite Cable Cores 140ohms 100MHz 33mm Inside Slot
Datasheet
5,247In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 140 Ohms 33 mm 37.01 mm 13.46 mm 0.51 mm 4.5 mm Bulk 28
Laird Ferrite Cable Cores 280ohms 100MHz 43.69mm Inside Slot
Datasheet
530In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 280 Ohms 43.69 mm 55.12 mm 25.4 mm 1.27 mm 12.7 mm Bulk 28
Laird Ferrite Cable Cores 160ohms 100MHz 2.39mm Inside Dia.
Datasheet
9,138In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 160 Ohms 2.39 mm 7.52 mm 7.54 mm Bulk 28
Laird Ferrite Cable Cores 128ohms 100MHz 20.5mm Inside Slot
Datasheet
3,177In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 128 Ohms 20.5 mm 26 mm 10 mm 0.8 mm 6 mm Bulk 28
Laird Ferrite Cable Cores Rib,Sld,BB,CLNO EMI Ferrite Core
Datasheet
7,621In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 125 Ohms 13.6 mm 15.6 mm 18 mm 0.7 mm 2.8 mm Bulk 28
Laird Ferrite Cable Cores 230ohms 100MHz 26.67mm Inside Slot
Datasheet
580In Stock
Min.: 1
Mult.: 1

28R Flat Ribbon Cable Cores Solid 230 Ohms 26.67 mm 38.1 mm 25.4 mm 1.91 mm 12.07 mm Bulk 28
Laird Ferrite Cable Cores Rnd,Sld,BB,CSNO Solid
Datasheet
134,535In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 116 Ohms 7.7 mm 11.7 mm 15 mm Bulk 28
Laird Ferrite Cable Cores 317ohms 100MHz 6.35mm Inside Dia.
Datasheet
54,950In Stock
84,480On 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 245ohms 100MHz 8.76mm Inside Dia.
Datasheet
26,693In Stock
19,200Expected 9/14/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 245 Ohms 8.76 mm 17.07 mm 25.4 mm Bulk 28
Laird Ferrite Cable Cores 79 ohms 100MHz 1.5 mm Inside Dia.
Datasheet
192,713In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 79 Ohms 1.5 mm 3.5 mm 3.25 mm Bulk 28
Laird Ferrite Cable Cores 121 ohms 100MHz 2 mm Inside Dia.
Datasheet
20,230In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 121 Ohms 2 mm 4 mm 10 mm Bulk 28
Laird Ferrite Cable Cores 138ohms 100MHz 3.99mm Inside Dia.
Datasheet
53,437In Stock
70,000Expected 11/9/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 138 Ohms 3.99 mm 6.78 mm 14.22 mm Bulk 28
Laird Ferrite Cable Cores 146ohms 100MHz 3.8mm Inside Dia.
Datasheet
23,164In Stock
13,552Expected 9/15/2026
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 146 Ohms 3.8 mm 7 mm 13.5 mm Bulk 28
Laird Ferrite Cable Cores 158ohms 100MHz 3.17mm Inside Dia.
Datasheet
16,250In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 158 Ohms 3.17 mm 8 mm 10.06 mm Bulk 28
Laird Ferrite Cable Cores 154ohms 100MHz 5.08mm Inside Dia.
Datasheet
20,109In Stock
Min.: 1
Mult.: 1

28B Round Cable Cores Solid 154 Ohms 5.08 mm 9.53 mm 14.48 mm Bulk 28