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28A Ferrite Clamp Filters

Laird 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 offers a selection of "split" cores that perform similarly to 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 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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz 28A0392-0A2 Laird Technologies 1: $1.42 58,428In Stock	Mfr. Part No. 28A0392-0A2 Mouser Part No 875-28A0392-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	58,428In Stock	$1.42 $1.09 $0.916 $0.826 View $0.726 $0.605 $0.597 $0.595	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird Technologies 1: $2.06 5,646In Stock	Mfr. Part No. 28A2307-0A2 Mouser Part No 875-28A2307-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	5,646In Stock	$2.06 $1.47 $1.26 $1.11 View $0.97 $0.918	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird Technologies 1: $2.58 1,041In Stock	Mfr. Part No. 28A2025-000 Mouser Part No 875-28A2025-000	Laird Technologies	Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	1,041In Stock	$2.58 $1.72 $1.47 $1.30 View $1.13 $1.10 $0.919 $0.918	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird Technologies 1: $3.02 26,653In Stock	Mfr. Part No. 28A0592-0A2 Mouser Part No 875-28A0592-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	26,653In Stock	$3.02 $2.09 $1.58 $1.38 $1.29	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird Technologies 1: $2.64 40,587In Stock 22,464Expected 2026/12/15	Mfr. Part No. 28A0593-0A2 Mouser Part No 875-28A0593-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	40,587In Stock 22,464Expected 2026/12/15	$2.64 $2.05 $1.80 $1.59 View $1.40 $1.33	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird Technologies 1: $2.24 13,246In Stock	Mfr. Part No. 28A2026-0A2 Mouser Part No 875-28A2026-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	13,246In Stock	$2.24 $1.55 $1.33 $1.17 $1.15	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird Technologies 1: $2.81 12,339In Stock	Mfr. Part No. 28A2029-0A2 Mouser Part No 875-28A2029-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	12,339In Stock	$2.81 $2.43 $2.11 $1.86 View $1.62 $1.41	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird Technologies 1: $2.12 55,555In Stock	Mfr. Part No. 28A2736-0A2 Mouser Part No 875-28A2736-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	55,555In Stock	$2.12 $1.47 $1.26 $1.11 View $0.969 $0.849	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird Technologies 1: $6.26 3,939In Stock	Mfr. Part No. 28A2738-0A2 Mouser Part No 875-28A2738-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	3,939In Stock	$6.26 $4.29 $3.56 $3.19 View $2.77 $2.66	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz 28A5131-0A2 Laird Technologies 1: $24.41 1,103In Stock 90Expected 2026/11/23	Mfr. Part No. 28A5131-0A2 Mouser Part No 875-28A5131-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	1,103In Stock 90Expected 2026/11/23	$24.41 $15.79 $14.79	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird Technologies 1: $1.98 16,169In Stock	Mfr. Part No. 28A0350-0B2 Mouser Part No 875-28A0350-0B2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	16,169In Stock	$1.98 $1.41 $1.22 $1.09 View $0.97 $0.822	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird Technologies 1: $2.17 2,894In Stock 2,816Expected 2026/12/28	Mfr. Part No. 28A0434-0A2 Mouser Part No 875-28A0434-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	2,894In Stock 2,816Expected 2026/12/28	$2.17 $1.51 $1.29 $1.14 $1.04	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz 28A0640-0A0 Laird Technologies 1: $3.22 2,183In Stock 4,500Expected 2026/12/15	Mfr. Part No. 28A0640-0A0 Mouser Part No 875-28A0640-0A0	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	2,183In Stock 4,500Expected 2026/12/15	$3.22 $2.22 $1.90 $1.67 View $1.44 $1.34 $1.27	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird Technologies 1: $2.59 1,834In Stock	Mfr. Part No. 28A0640-0A2 Mouser Part No 875-28A0640-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	1,834In Stock	$2.59 $1.80 $1.54 $1.35 $1.28	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird Technologies 1: $3.42 6,640In Stock 7,200Expected 2026/12/28	Mfr. Part No. 28A0807-0A2 Mouser Part No 875-28A0807-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	6,640In Stock 7,200Expected 2026/12/28	$3.42 $2.48 $2.17 $1.94 $1.84	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz 28A1507-0A2 Laird Technologies 1: $1.37 6,266In Stock	Mfr. Part No. 28A1507-0A2 Mouser Part No 875-28A1507-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	6,266In Stock	$1.37 $0.957 $0.822 $0.729 View $0.642 $0.537 $0.506	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird Technologies 1: $1.74 6,847In Stock 8,448Expected 2027/01/06	Mfr. Part No. 28A2005-0A2 Mouser Part No 875-28A2005-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	6,847In Stock 8,448Expected 2027/01/06	$1.74 $1.21 $1.04 $0.918 View $0.809 $0.719 $0.645	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird Technologies 1: $4.68 3,857In Stock	Mfr. Part No. 28A2024-0A0 Mouser Part No 875-28A2024-0A0	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	3,857In Stock	$4.68 $3.20 $2.72 $2.38	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz 28A2025-0A0 Laird Technologies 1: $2.12 23,642In Stock	Mfr. Part No. 28A2025-0A0 Mouser Part No 875-28A2025-0A0	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	23,642In Stock	$2.12 $1.48 $1.27 $1.12 View $0.884 $0.876 $0.813	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird Technologies 1: $1.86 6,321In Stock 10,080Expected 2027/01/13	Mfr. Part No. 28A2025-0A2 Mouser Part No 875-28A2025-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	6,321In Stock 10,080Expected 2027/01/13	$1.86 $1.47 $1.26 $1.11 View $0.872 $0.869 $0.807	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird Technologies 1: $3.23 2,892In Stock 2,250Expected 2026/12/07	Mfr. Part No. 28A2029-0A0 Mouser Part No 875-28A2029-0A0	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	2,892In Stock 2,250Expected 2026/12/07	$3.23 $2.23 $1.90 $1.67 View $1.45 $1.41	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird Technologies 1: $2.84 9,233In Stock	Mfr. Part No. 28A2432-0A2 Mouser Part No 875-28A2432-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	9,233In Stock	$2.84 $1.97 $1.67 $1.52	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird Technologies 1: $8.50 850In Stock 1,200Expected 2027/01/18	Mfr. Part No. 28A3851-0A2 Mouser Part No 875-28A3851-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	850In Stock 1,200Expected 2027/01/18	$8.50 $5.76 $5.12	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird Technologies 1: $9.94 509In Stock 2,448On Order	Mfr. Part No. 28A5776-0A2 Mouser Part No 875-28A5776-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	509In Stock 2,448On Order On Order Ship Dates Mfr. No: 28A5776-0A2 Stock: 509 Can Dispatch Immediately On Order: 1,008 Expected 2026/12/21 1,440 Expected 2027/02/08 Factory Lead Time: 13 Weeks	$9.94 $6.69 $6.04 $6.02	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 177 Ohms 100MHz 28A2913-0A2 Laird Technologies 1: $3.61 378In Stock 576Expected 2026/12/21	Mfr. Part No. 28A2913-0A2 Mouser Part No 875-28A2913-0A2	Laird Technologies	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 177 Ohms 100MHz Learn More about Laird Technologies laird 28a ferrite clamp filters	Datasheet	378In Stock 576Expected 2026/12/21	$3.61 $2.48 $2.11 $1.85 $1.50	Min.: 1 Mult.: 1

28A Ferrite Clamp Filters

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28A Ferrite Clamp Filters

Types of Passive Components