28A Ferrite Clamp Filters

Laird Technologies 28A Ferrite Clamp Filters are split, snap-on cores in plastic cases for broadband EMI filtering. The 28A series is designed for round cables and wiring harnesses. For retrofit and post-assembly operations, Laird Technologies offers a selection of "split" cores that are similar in performance to the one-piece core designs. The 28A split ferrite cores provide excellent common and differential mode EMI suppression on round cable assemblies. Lightweight plastic snap-on cases provide the secure closure of the split cores onto the cable. The cases are available in black or white with dimensions ranging from 5mm (0.197") to 56.63mm (2.23"). Laird Technologies 28A Ferrite Clamp Filters feature an operating temperature range of -40°C to +125°C. Typical impedance ranges from 50Ω to 232Ω at 25MHz, 120Ω to 511Ω at 100MHz, and 230Ω to 627Ω at 300MHz.

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Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz
Datasheet
94,841May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 5.44 mm 13.72 mm 30.56 mm 13.72 mm 12.72 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 177 Ohms 100MHz
Datasheet
1,234May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 13.06 mm 23.5 mm 36.25 mm 22 mm 23.5 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on
Datasheet
1,081May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz
Datasheet
21,993May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 3.5 mm 13 mm 25.2 mm 13 mm 11.5 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz
Datasheet
6,741May Stock
2,312Inoorder
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 5.04 mm 18.75 mm 53.39 mm 18.75 mm 18.75 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz
Datasheet
9,274May Stock
10,080Inaasahan 5/18/2026
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 6.75 mm 18.75 mm 52.91 mm 18.75 mm 18.75 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz
Datasheet
29,115May Stock
14,000Inaasahan 4/7/2026
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 9 mm 19.7 mm 35.1 mm 19.7 mm 18 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz
Datasheet
8,360May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 7 mm 16.5 mm 30.5 mm 15.25 mm 16.5 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220 Ohms 100MHz
Datasheet
1,240May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 9 mm 19.7 mm 28 mm 18.25 mm 16 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz
Datasheet
1,025May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 19.5 mm 56.63 mm 45 mm 45 mm 56.64 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz
Datasheet
3,061May Stock
9,464Inoorder
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 5.44 mm 13.72 mm 30.56 mm 13.72 mm 12.72 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz
Datasheet
7,726May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 5.44 mm 14.71 mm 42.88 mm 14.71 mm 14.71 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz
Datasheet
1,494May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 9.8 mm 20.07 mm 41.4 mm 19.9 mm 21.65 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz
Datasheet
1,359May Stock
900Inaasahan 4/7/2026
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 9.07 mm 20.07 mm 41.4 mm 19.9 mm 21.65 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz
Datasheet
2,883May Stock
3,720Inoorder
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 10 mm 24.82 mm 37.5 mm 20.5 mm 9.55 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz
Datasheet
7,624May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 7 mm 15 mm 18 mm 15 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz
Datasheet
8,620May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 5 mm 13 mm 25.5 mm 13 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case
Datasheet
3,929May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 13 mm 32.5 mm 29 mm 29.62 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 280ohms 100MHz
Datasheet
4,498May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 13 mm 32.5 mm 29 mm 29.62 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz
Datasheet
14,373May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 7.05 mm 32.5 mm 18.15 mm 18.9 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz
Datasheet
7,516May Stock
10,080Inaasahan 4/21/2026
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 7.05 mm 32.5 mm 18.15 mm 18.9 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz
Datasheet
6,276May Stock
3,800Inaasahan 3/30/2026
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 6.8 mm 21 mm 41.7 mm 21 mm 21 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz
Datasheet
3,852May Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 10 mm 32.77 mm 22.28 mm 21.84 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz
Datasheet
1,367May Stock
3,170Inoorder
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 10 mm 32.77 mm 22.28 mm 21.84 mm 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz
Datasheet
2,365May Stock
4,450Inoorder
Min.: 1
Mult.: 1

Ferrite Clamp On Cores Round 28 8.2 mm 19.2 mm 19.9 mm 19.2 mm 23.1 mm 28A Bulk