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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 1: $1.11 A tariff of 10% may be applied if shipping to the United States. 61,122In Stock	Mfr. Part # 28A0392-0A2 Mouser Part # 875-28A0392-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	61,122In Stock	$1.11 $0.985 $0.95 $0.808 View $0.713 $0.599 $0.597 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz 28A0392-0A0 Laird 1: $1.40 A tariff of 10% may be applied if shipping to the United States. 8,715In Stock	Mfr. Part # 28A0392-0A0 Mouser Part # 875-28A0392-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8,715In Stock	$1.40 $1.05 $0.931 $0.852 View $0.762 $0.635 $0.632 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird 1: $2.41 A tariff of 10% may be applied if shipping to the United States. 1,041In Stock	Mfr. Part # 28A2025-000 Mouser Part # 875-28A2025-000	Laird	Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on Learn More about Laird 28a ferrite clamp filters	Datasheet	1,041In Stock	$2.41 $1.66 $1.42 $1.26 View $1.10 $0.971 $0.919 $0.918 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird 1: $3.15 A tariff of 10% may be applied if shipping to the United States. 27,249In Stock	Mfr. Part # 28A0592-0A2 Mouser Part # 875-28A0592-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	27,249In Stock	$3.15 $2.17 $1.64 $1.43 View $1.32 $1.29 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird 1: $2.62 A tariff of 10% may be applied if shipping to the United States. 42,420In Stock 22,464Expected 12/8/2026	Mfr. Part # 28A0593-0A2 Mouser Part # 875-28A0593-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	42,420In Stock 22,464Expected 12/8/2026	$2.62 $2.05 $1.80 $1.59 View $1.39 $1.32 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird 1: $2.85 A tariff of 10% may be applied if shipping to the United States. 13,594In Stock 200On Order	Mfr. Part # 28A2026-0A2 Mouser Part # 875-28A2026-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	13,594In Stock 200On Order	$2.85 $1.97 $1.68 $1.48 $1.15 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird 1: $2.12 A tariff of 10% may be applied if shipping to the United States. 48,603In Stock 11,900Expected 10/29/2026	Mfr. Part # 28A2736-0A2 Mouser Part # 875-28A2736-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	48,603In Stock 11,900Expected 10/29/2026	$2.12 $1.47 $1.26 $1.11 View $0.969 $0.856 $0.849 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird 1: $2.12 A tariff of 10% may be applied if shipping to the United States. 5,856In Stock	Mfr. Part # 28A2307-0A2 Mouser Part # 875-28A2307-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	5,856In Stock	$2.12 $1.47 $1.26 $1.11 $1.01 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird 1: $6.08 A tariff of 10% may be applied if shipping to the United States. 3,939In Stock	Mfr. Part # 28A2738-0A2 Mouser Part # 875-28A2738-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3,939In Stock	$6.08 $4.17 $3.54 $3.10 View $2.70 $2.66 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz 28A5131-0A2 Laird 1: $23.83 A tariff of 10% may be applied if shipping to the United States. 354In Stock 918On Order	Mfr. Part # 28A5131-0A2 Mouser Part # 875-28A5131-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	354In Stock 918On Order On Order Ship Dates Mfr. #: 28A5131-0A2 Stock: 354 Can Ship Immediately On Order: 72 Pending 846 Expected 11/3/2026 Factory Lead-Time: 12 Weeks	$23.83 $15.97 $14.62 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird 1: $1.90 A tariff of 10% may be applied if shipping to the United States. 8,551In Stock 10,780Expected 10/20/2026	Mfr. Part # 28A0350-0B2 Mouser Part # 875-28A0350-0B2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8,551In Stock 10,780Expected 10/20/2026	$1.90 $1.35 $1.18 $1.05 View $0.936 $0.829 $0.822 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird 1: $2.24 A tariff of 10% may be applied if shipping to the United States. 3,139In Stock 2,816Expected 12/21/2026	Mfr. Part # 28A0434-0A2 Mouser Part # 875-28A0434-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3,139In Stock 2,816Expected 12/21/2026	$2.24 $1.59 $1.36 $1.20 View $1.06 $1.04 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird 1: $2.59 A tariff of 10% may be applied if shipping to the United States. 1,976In Stock	Mfr. Part # 28A0640-0A2 Mouser Part # 875-28A0640-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	1,976In Stock	$2.59 $1.80 $1.53 $1.35 $1.28 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird 1: $3.57 A tariff of 10% may be applied if shipping to the United States. 3,382In Stock 10,920On Order	Mfr. Part # 28A0807-0A2 Mouser Part # 875-28A0807-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3,382In Stock 10,920On Order On Order Ship Dates Mfr. #: 28A0807-0A2 Stock: 3,382 Can Ship Immediately On Order: 3,720 Expected 10/12/2026 7,200 Expected 12/21/2026 Factory Lead-Time: 13 Weeks	$3.57 $2.46 $2.09 $1.84 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird 1: $1.68 A tariff of 10% may be applied if shipping to the United States. 3,117In Stock 13,728On Order	Mfr. Part # 28A2005-0A2 Mouser Part # 875-28A2005-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3,117In Stock 13,728On Order On Order Ship Dates Mfr. #: 28A2005-0A2 Stock: 3,117 Can Ship Immediately On Order: 5,280 Expected 10/12/2026 8,448 Expected 12/21/2026 Factory Lead-Time: 13 Weeks	$1.68 $1.16 $0.998 $0.918 View $0.809 $0.657 $0.636 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird 1: $4.41 A tariff of 10% may be applied if shipping to the United States. 2,418In Stock 1,620Expected 11/9/2026	Mfr. Part # 28A2024-0A0 Mouser Part # 875-28A2024-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case Learn More about Laird 28a ferrite clamp filters	Datasheet	2,418In Stock 1,620Expected 11/9/2026	$4.41 $3.02 $2.56 $2.38 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz 28A2025-0A0 Laird 1: $2.04 A tariff of 10% may be applied if shipping to the United States. 8,209In Stock 17,040Expected 11/9/2026	Mfr. Part # 28A2025-0A0 Mouser Part # 875-28A2025-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8,209In Stock 17,040Expected 11/9/2026	$2.04 $1.48 $1.19 $1.10 View $0.877 $0.876 $0.813 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird 1: $1.78 A tariff of 10% may be applied if shipping to the United States. 8,202In Stock	Mfr. Part # 28A2025-0A2 Mouser Part # 875-28A2025-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8,202In Stock	$1.78 $1.32 $1.16 $1.09 View $0.87 $0.842 $0.809 $0.808 $0.807 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird 1: $3.23 A tariff of 10% may be applied if shipping to the United States. 3,244In Stock 2,250Expected 11/30/2026	Mfr. Part # 28A2029-0A0 Mouser Part # 875-28A2029-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3,244In Stock 2,250Expected 11/30/2026	$3.23 $2.23 $1.90 $1.67 View $1.44 $1.41 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird 1: $2.58 A tariff of 10% may be applied if shipping to the United States. 12,357In Stock	Mfr. Part # 28A2029-0A2 Mouser Part # 875-28A2029-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	12,357In Stock	$2.58 $1.86 $1.59 $1.41 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird 1: $2.70 A tariff of 10% may be applied if shipping to the United States. 4,493In Stock 4,800Expected 10/29/2026	Mfr. Part # 28A2432-0A2 Mouser Part # 875-28A2432-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	4,493In Stock 4,800Expected 10/29/2026	$2.70 $1.87 $1.59 $1.52 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz 28A3039-0A2 Laird 1: $3.57 A tariff of 10% may be applied if shipping to the United States. 1,282In Stock	Mfr. Part # 28A3039-0A2 Mouser Part # 875-28A3039-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	1,282In Stock	$3.57 $2.45 $2.08 $1.82 View $1.58 $1.56 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird 1: $9.87 A tariff of 10% may be applied if shipping to the United States. 1,530In Stock	Mfr. Part # 28A3851-0A2 Mouser Part # 875-28A3851-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	1,530In Stock	$9.87 $7.01 $5.55 $5.22 $5.12 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird 1: $9.90 A tariff of 10% may be applied if shipping to the United States. 646In Stock 1,008Expected 12/21/2026	Mfr. Part # 28A5776-0A2 Mouser Part # 875-28A5776-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	646In Stock 1,008Expected 12/21/2026	$9.90 $8.03 $6.72 $6.02 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220 Ohms 100MHz 28A2809-0A2 Laird 1: $3.44 A tariff of 10% may be applied if shipping to the United States. 619In Stock 700Expected 12/14/2026	Mfr. Part # 28A2809-0A2 Mouser Part # 875-28A2809-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	619In Stock 700Expected 12/14/2026	$3.44 $2.37 $2.02 $1.77 $1.57 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1

28A Ferrite Clamp Filters

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