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.

Results: 33
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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product Type
Shape
Core Material
Inside Diameter
Outside Diameter
Outside Length
Outside Width
Outside Height
Series
Packaging
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz
Datasheet
94.841In 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
1.254In 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
1.081In Stock
Min.: 1
Mult.: 1

Ferrite Clamp On Cores 28A Bulk
Laird Technologies Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz
Datasheet
21.993In 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
9.941In Stock
2.312On Order
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
15.624In Stock
10.080Expected 06/05/2026
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
29.135In Stock
14.000Expected 07/04/2026
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
8.360In 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
1.240In 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
1.025In 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
3.061In Stock
9.464On Order
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
7.726In 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
1.494In 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
1.359In Stock
900Expected 07/04/2026
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
2.933In Stock
3.720On Order
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
7.624In 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
8.610In 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
3.929In 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
4.498In 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
14.373In 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
7.516In Stock
10.080Expected 21/04/2026
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
6.276In Stock
3.800Expected 30/03/2026
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
3.952In 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
1.367In Stock
3.170On Order
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
2.365In Stock
4.450On Order
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