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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 (THB) 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: ฿47.65 58,960In 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	58,960In Stock	฿47.65 ฿36.32 ฿30.52 ฿27.49 View ฿24.19 ฿20.16 ฿19.89	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird 1: ฿68.64 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	฿68.64 ฿48.98 ฿41.98 ฿36.99 View ฿32.32 ฿29.42 ฿28.62 ฿28.56 ฿28.26	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird 1: ฿85.97 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	฿85.97 ฿57.31 ฿48.98 ฿43.32 View ฿37.65 ฿36.65 ฿30.62 ฿30.55	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird 1: ฿65.97 18,349In 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	18,349In Stock	฿65.97 ฿46.98 ฿40.65 ฿36.32 View ฿32.32 ฿27.39	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird 1: ฿100.63 26,768In 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	26,768In Stock	฿100.63 ฿69.64 ฿52.65 ฿45.98 ฿42.98	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird 1: ฿87.96 40,632In Stock 22,464Expected 12/15/2026	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	40,632In Stock 22,464Expected 12/15/2026	฿87.96 ฿68.31 ฿59.98 ฿52.98 View ฿46.31 ฿43.98	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird 1: ฿74.64 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	฿74.64 ฿51.65 ฿44.32 ฿38.98 ฿38.32	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird 1: ฿93.63 12,248In 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	12,248In Stock	฿93.63 ฿80.97 ฿70.31 ฿61.98 View ฿53.98 ฿46.98	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird 1: ฿70.64 55,940In 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	55,940In Stock	฿70.64 ฿48.98 ฿41.98 ฿36.99 View ฿32.29 ฿28.29	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird 1: ฿208.58 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	฿208.58 ฿142.94 ฿118.62 ฿106.29 View ฿92.30 ฿88.63	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz 28A5131-0A2 Laird 1: ฿813.34 581In Stock 666On 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	581In Stock 666On Order On Order Ship Dates Mfr. No: 28A5131-0A2 Stock: 581 Can Dispatch Immediately On Order: 576 Expected 11/4/2026 90 Expected 11/13/2026 Factory Lead Time: 12 Weeks	฿813.34 ฿526.12 ฿487.14	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird 1: ฿72.30 2,989In Stock 2,816Expected 12/28/2026	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 12/28/2026	฿72.30 ฿50.31 ฿42.98 ฿37.98 ฿34.65	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz 28A0640-0A0 Laird 1: ฿107.29 2,183In Stock 4,500Expected 12/15/2026	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 12/15/2026	฿107.29 ฿73.97 ฿62.97 ฿55.64 View ฿47.98 ฿44.65 ฿42.32	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird 1: ฿86.30 1,950In 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	1,950In Stock	฿86.30 ฿59.98 ฿50.98 ฿44.98 ฿42.65	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird 1: ฿113.95 6,820In Stock 7,200Expected 12/28/2026	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	6,820In Stock 7,200Expected 12/28/2026	฿113.95 ฿82.63 ฿72.30 ฿64.64 ฿61.31	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 123 Ohms 100MHz 28A1507-0A2 Laird 1: ฿45.65 6,366In 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	6,366In Stock	฿45.65 ฿31.89 ฿27.39 ฿24.29 View ฿21.39 ฿17.89 ฿16.86	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird 1: ฿57.98 8,114In Stock 8,448Expected 1/6/2027	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	8,114In Stock 8,448Expected 1/6/2027	฿57.98 ฿40.32 ฿34.65 ฿30.59 View ฿26.96 ฿23.96 ฿21.19	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird 1: ฿155.94 2,886In Stock 972Expected 11/4/2026	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	2,886In Stock 972Expected 11/4/2026	฿155.94 ฿106.62 ฿90.63 ฿79.30	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz 28A2025-0A0 Laird 1: ฿70.64 6,822In Stock 17,040Expected 11/16/2026	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	6,822In Stock 17,040Expected 11/16/2026	฿70.64 ฿49.31 ฿42.32 ฿37.32 View ฿29.22 ฿29.19 ฿27.09	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird 1: ฿61.98 6,421In Stock 10,080Expected 1/13/2027	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 1/13/2027	฿61.98 ฿48.98 ฿41.98 ฿36.99 View ฿28.99 ฿28.96 ฿26.89	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird 1: ฿107.62 2,944In Stock 2,250Expected 12/7/2026	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	2,944In Stock 2,250Expected 12/7/2026	฿107.62 ฿74.30 ฿63.31 ฿55.64 View ฿48.31 ฿46.98	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird 1: ฿94.63 9,283In 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	9,283In Stock	฿94.63 ฿65.31 ฿55.64 ฿50.65	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz 28A3039-0A2 Laird 1: ฿123.95 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	฿123.95 ฿85.30 ฿72.30 ฿63.64 View ฿55.31 ฿51.98	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird 1: ฿283.22 900In Stock 1,200Expected 1/18/2027	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	900In Stock 1,200Expected 1/18/2027	฿283.22 ฿191.59 ฿170.60	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird 1: ฿331.20 536In Stock 1,008Expected 12/21/2026	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 12/21/2026	฿331.20 ฿222.91 ฿200.92 ฿200.59	Min.: 1 Mult.: 1

28A Ferrite Clamp Filters

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28A Ferrite Clamp Filters

Types of Passive Components