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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 (CHF) 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: 1.15 CHF 59 560In Stock	Mfr. Part No. 28A0392-0A2 Mouser Part No 875-28A0392-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	59 560In Stock	1.15 CHF 0.877 CHF 0.738 CHF 0.665 CHF View 0.584 CHF 0.487 CHF 0.48 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird 1: 2.08 CHF 1 041In Stock	Mfr. Part No. 28A2025-000 Mouser Part No 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	2.08 CHF 1.39 CHF 1.18 CHF 1.05 CHF View 0.91 CHF 0.885 CHF 0.739 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird 1: 1.59 CHF 18 454In Stock	Mfr. Part No. 28A0350-0B2 Mouser Part No 875-28A0350-0B2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	18 454In Stock	1.59 CHF 1.13 CHF 0.983 CHF 0.877 CHF View 0.781 CHF 0.662 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird 1: 2.43 CHF 26 783In Stock	Mfr. Part No. 28A0592-0A2 Mouser Part No 875-28A0592-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	26 783In Stock	2.43 CHF 1.68 CHF 1.27 CHF 1.11 CHF 1.04 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird 1: 2.12 CHF 40 738In Stock 22 464Expected 15/12/2026	Mfr. Part No. 28A0593-0A2 Mouser Part No 875-28A0593-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	40 738In Stock 22 464Expected 15/12/2026	2.12 CHF 1.65 CHF 1.45 CHF 1.28 CHF View 1.12 CHF 1.07 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird 1: 1.81 CHF 13 252In Stock	Mfr. Part No. 28A2026-0A2 Mouser Part No 875-28A2026-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	13 252In Stock	1.81 CHF 1.24 CHF 1.07 CHF 0.945 CHF 0.926 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird 1: 2.27 CHF 12 351In Stock	Mfr. Part No. 28A2029-0A2 Mouser Part No 875-28A2029-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	12 351In Stock	2.27 CHF 1.96 CHF 1.69 CHF 1.50 CHF View 1.30 CHF 1.13 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird 1: 1.70 CHF 56 043In Stock	Mfr. Part No. 28A2736-0A2 Mouser Part No 875-28A2736-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	56 043In Stock	1.70 CHF 1.18 CHF 1.01 CHF 0.894 CHF View 0.78 CHF 0.683 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird 1: 1.70 CHF 5 681In Stock	Mfr. Part No. 28A2307-0A2 Mouser Part No 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 681In Stock	1.70 CHF 1.18 CHF 1.01 CHF 0.894 CHF 0.813 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird 1: 5.09 CHF 3 939In Stock	Mfr. Part No. 28A2738-0A2 Mouser Part No 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	5.09 CHF 3.48 CHF 2.86 CHF 2.57 CHF View 2.23 CHF 2.14 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz 28A5131-0A2 Laird 1: 19.65 CHF 402In Stock 846On Order	Mfr. Part No. 28A5131-0A2 Mouser Part No 875-28A5131-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	402In Stock 846On Order On Order Ship Dates Mfr. No: 28A5131-0A2 Stock: 402 Can Dispatch Immediately On Order: 828 Expected 04/11/2026 18 Expected 10/11/2026 Factory Lead Time: 12 Weeks	19.65 CHF 12.71 CHF 11.80 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird 1: 1.75 CHF 2 989In Stock 2 816Expected 28/12/2026	Mfr. Part No. 28A0434-0A2 Mouser Part No 875-28A0434-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	2 989In Stock 2 816Expected 28/12/2026	1.75 CHF 1.22 CHF 1.04 CHF 0.917 CHF 0.837 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz 28A0640-0A0 Laird 1: 2.59 CHF 2 183In Stock 4 500Expected 15/12/2026	Mfr. Part No. 28A0640-0A0 Mouser Part No 875-28A0640-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	2 183In Stock 4 500Expected 15/12/2026	2.59 CHF 1.79 CHF 1.53 CHF 1.35 CHF View 1.16 CHF 1.08 CHF 1.02 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird 1: 2.09 CHF 1 976In Stock	Mfr. Part No. 28A0640-0A2 Mouser Part No 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	2.09 CHF 1.45 CHF 1.24 CHF 1.09 CHF 1.03 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird 1: 2.75 CHF 6 831In Stock 7 200Expected 28/12/2026	Mfr. Part No. 28A0807-0A2 Mouser Part No 875-28A0807-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	6 831In Stock 7 200Expected 28/12/2026	2.75 CHF 1.99 CHF 1.75 CHF 1.56 CHF 1.48 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz 28A1507-0A2 Laird 1: 1.10 CHF 6 466In Stock	Mfr. Part No. 28A1507-0A2 Mouser Part No 875-28A1507-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	6 466In Stock	1.10 CHF 0.77 CHF 0.662 CHF 0.587 CHF View 0.517 CHF 0.432 CHF 0.407 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird 1: 1.40 CHF 8 204In Stock 8 448Expected 06/01/2027	Mfr. Part No. 28A2005-0A2 Mouser Part No 875-28A2005-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8 204In Stock 8 448Expected 06/01/2027	1.40 CHF 0.973 CHF 0.837 CHF 0.739 CHF View 0.651 CHF 0.578 CHF 0.514 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird 1: 3.76 CHF 2 138In Stock 1 620Expected 04/11/2026	Mfr. Part No. 28A2024-0A0 Mouser Part No 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 138In Stock 1 620Expected 04/11/2026	3.76 CHF 2.57 CHF 2.19 CHF 1.92 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz 28A2025-0A0 Laird 1: 1.70 CHF 7 842In Stock 17 040Expected 16/11/2026	Mfr. Part No. 28A2025-0A0 Mouser Part No 875-28A2025-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	7 842In Stock 17 040Expected 16/11/2026	1.70 CHF 1.19 CHF 1.02 CHF 0.901 CHF View 0.706 CHF 0.705 CHF 0.654 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird 1: 1.50 CHF 6 421In Stock 10 080Expected 13/01/2027	Mfr. Part No. 28A2025-0A2 Mouser Part No 875-28A2025-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	6 421In Stock 10 080Expected 13/01/2027	1.50 CHF 1.18 CHF 1.01 CHF 0.894 CHF View 0.70 CHF 0.699 CHF 0.65 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird 1: 2.60 CHF 3 044In Stock 2 250Expected 07/12/2026	Mfr. Part No. 28A2029-0A0 Mouser Part No 875-28A2029-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	3 044In Stock 2 250Expected 07/12/2026	2.60 CHF 1.80 CHF 1.53 CHF 1.35 CHF View 1.17 CHF 1.13 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird 1: 2.28 CHF 9 293In Stock	Mfr. Part No. 28A2432-0A2 Mouser Part No 875-28A2432-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	9 293In Stock	2.28 CHF 1.58 CHF 1.35 CHF 1.23 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz 28A3039-0A2 Laird 1: 3.00 CHF 1 058In Stock	Mfr. Part No. 28A3039-0A2 Mouser Part No 875-28A3039-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	1 058In Stock	3.00 CHF 2.06 CHF 1.75 CHF 1.54 CHF View 1.34 CHF 1.25 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird 1: 6.84 CHF 1 252In Stock 1 200Expected 18/01/2027	Mfr. Part No. 28A3851-0A2 Mouser Part No 875-28A3851-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	1 252In Stock 1 200Expected 18/01/2027	6.84 CHF 4.63 CHF 4.12 CHF	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird 1: 8.56 CHF 536In Stock 1 008Expected 21/12/2026	Mfr. Part No. 28A5776-0A2 Mouser Part No 875-28A5776-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	536In Stock 1 008Expected 21/12/2026	8.56 CHF 6.46 CHF 5.41 CHF 4.85 CHF	Min.: 1 Mult.: 1

28A Ferrite Clamp Filters

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28A Ferrite Clamp Filters

Types of Passive Components