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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz 28A0392-0A0 Laird 1: HK$11.51 8,815In Stock	Mfr. Part No. 28A0392-0A0 Mouser Part No 875-28A0392-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	8,815In Stock	HK$11.51 HK$8.63 HK$7.65 HK$7.00 View HK$6.26 HK$5.22 HK$5.20	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird 1: HK$19.81 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	HK$19.81 HK$13.65 HK$11.67 HK$10.36 View HK$9.04 HK$7.98 HK$7.55	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 170ohms 100MHz 28A0392-0A2 Laird 1: HK$9.12 62,057In 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	62,057In Stock	HK$9.12 HK$8.10 HK$7.81 HK$6.64 View HK$5.86 HK$4.92 HK$4.91	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird 1: HK$25.89 27,544In 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	27,544In Stock	HK$25.89 HK$17.84 HK$13.48 HK$11.75 View HK$10.85 HK$10.60	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird 1: HK$21.54 43,067In Stock 22,464Expected 8/12/2026	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	43,067In Stock 22,464Expected 8/12/2026	HK$21.54 HK$16.85 HK$14.80 HK$13.07 View HK$11.43 HK$10.85	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird 1: HK$17.76 35,663In Stock 25,900Expected 7/10/2026	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	35,663In Stock 25,900Expected 7/10/2026	HK$17.76 HK$12.25 HK$10.44 HK$9.29 View HK$8.11 HK$7.04 HK$6.98	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird 1: HK$17.43 5,860In 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	5,860In Stock	HK$17.43 HK$12.08 HK$10.36 HK$9.12 HK$8.30	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird 1: HK$49.98 3,982In 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	3,982In Stock	HK$49.98 HK$34.28 HK$29.10 HK$25.48 View HK$22.19 HK$21.87	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird 1: HK$15.62 8,595In Stock 10,780Expected 20/10/2026	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	8,595In Stock 10,780Expected 20/10/2026	HK$15.62 HK$11.10 HK$9.70 HK$8.63 View HK$7.69 HK$6.81 HK$6.76	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird 1: HK$18.41 3,328In Stock 2,816Expected 21/12/2026	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	3,328In Stock 2,816Expected 21/12/2026	HK$18.41 HK$13.07 HK$11.18 HK$9.86 View HK$8.71 HK$8.55	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird 1: HK$21.29 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	HK$21.29 HK$14.80 HK$12.58 HK$11.10 HK$10.52	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird 1: HK$29.35 3,398In Stock 10,920On Order	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	3,398In Stock 10,920On Order On Order Ship Dates Mfr. No: 28A0807-0A2 Stock: 3,398 Can Dispatch Immediately On Order: 3,720 Expected 20/10/2026 7,200 Expected 21/12/2026 Factory Lead Time: 13 Weeks	HK$29.35 HK$20.22 HK$17.18 HK$15.12	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz 28A1507-0A2 Laird 1: HK$10.69 3,179In Stock 4,032Expected 20/10/2026	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	3,179In Stock 4,032Expected 20/10/2026	HK$10.69 HK$7.42 HK$6.38 HK$5.66 View HK$4.98 HK$4.17 HK$4.16	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird 1: HK$13.81 3,769In Stock 5,280Expected 20/10/2026	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	3,769In Stock 5,280Expected 20/10/2026	HK$13.81 HK$9.54 HK$8.20 HK$7.55 View HK$6.65 HK$5.40 HK$5.23	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird 1: HK$44.72 2,418In Stock 1,620Expected 9/11/2026	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	2,418In Stock 1,620Expected 9/11/2026	HK$44.72 HK$30.66 HK$26.06 HK$22.85 HK$19.56	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird 1: HK$14.63 9,688In Stock	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	9,688In Stock	HK$14.63 HK$10.85 HK$9.54 HK$8.96 View HK$7.15 HK$6.92 HK$6.65 HK$6.64 HK$6.63	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird 1: HK$23.43 8,394In Stock 5,800Expected 29/9/2026	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	8,394In Stock 5,800Expected 29/9/2026	HK$23.43 HK$16.19 HK$13.81 HK$12.17 HK$9.45	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird 1: HK$26.55 3,394In Stock 2,250Expected 30/11/2026	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	3,394In Stock 2,250Expected 30/11/2026	HK$26.55 HK$18.33 HK$15.62 HK$13.73 View HK$11.84 HK$11.59	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird 1: HK$22.11 2,845In Stock 9,512On Order	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	2,845In Stock 9,512On Order On Order Ship Dates Mfr. No: 28A2029-0A2 Stock: 2,845 Can Dispatch Immediately On Order: 4,800 Expected 5/10/2026 4,712 Expected 21/10/2026 Factory Lead Time: 13 Weeks	HK$22.11 HK$15.29 HK$13.07 HK$11.59	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird 1: HK$22.19 4,393In Stock 4,900Expected 5/10/2026	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	4,393In Stock 4,900Expected 5/10/2026	HK$22.19 HK$15.37 HK$13.07 HK$12.49	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz 28A3039-0A2 Laird 1: HK$29.35 1,282In 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	1,282In Stock	HK$29.35 HK$20.14 HK$17.10 HK$14.96 View HK$12.99 HK$12.82	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird 1: HK$81.13 1,200In Stock 400Expected 21/10/2026	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	1,200In Stock 400Expected 21/10/2026	HK$81.13 HK$57.62 HK$45.62 HK$42.91 HK$42.09	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird 1: HK$81.38 699In Stock 1,008Expected 7/12/2026	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	699In Stock 1,008Expected 7/12/2026	HK$81.38 HK$66.01 HK$55.24 HK$49.48	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220 Ohms 100MHz 28A2809-0A2 Laird 1: HK$28.28 619In Stock 700Expected 30/11/2026	Mfr. Part No. 28A2809-0A2 Mouser Part No 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 30/11/2026	HK$28.28 HK$19.48 HK$16.60 HK$14.55 HK$12.91	Min.: 1 Mult.: 1	Ferrite Clamp On Cores
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 177 Ohms 100MHz 28A2913-0A2 Laird 1: HK$28.85 583In Stock 576Expected 14/12/2026	Mfr. Part No. 28A2913-0A2 Mouser Part No 875-28A2913-0A2	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER BLK 177 Ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	583In Stock 576Expected 14/12/2026	HK$28.85 HK$19.81 HK$16.85 HK$14.80 HK$12.33	Min.: 1 Mult.: 1	Ferrite Clamp On Cores

28A Ferrite Clamp Filters

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