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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 (CLP) 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: $1.219 61.022In 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	61.022In Stock	$1.219 $1.081 $1.043 $887 View $783 $658 $655	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 170ohms 100MHz 28A0392-0A0 Laird 1: $1.537 1.959In 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	1.959In Stock	$1.537 $1.153 $1.022 $935 View $837 $697 $694	Min.: 1 Mult.: 1
Ferrite Clamp On Cores Rnd,Spl,BB,CSNO Snap-on 28A2025-000 Laird 1: $2.646 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	$2.646 $1.823 $1.559 $1.383 View $1.208 $1.066 $1.009 $1.008	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 572ohms 100MHz 28A0592-0A2 Laird 1: $3.459 27.149In 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	27.149In Stock	$3.459 $2.383 $1.801 $1.570 View $1.449 $1.416	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 407ohms 100MHz 28A0593-0A2 Laird 1: $2.877 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	$2.877 $2.251 $1.976 $1.746 View $1.526 $1.449	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 270ohms 100MHz 28A2026-0A2 Laird 1: $3.129 13.752In Stock	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	13.752In Stock	$3.129 $2.163 $1.845 $1.625 $1.263	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 250ohms 100MHz 28A2029-0A2 Laird 1: $2.833 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	$2.833 $2.042 $1.746 $1.548	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 220ohms 100MHz 28A2736-0A2 Laird 1: $2.328 60.053In Stock	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	60.053In Stock	$2.328 $1.614 $1.383 $1.219 View $1.064 $940 $932	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 183 Ohms 100MHz 28A2307-0A2 Laird 1: $2.328 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	$2.328 $1.614 $1.383 $1.219 $1.109	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 233 Ohms 100MHz 28A2738-0A2 Laird 1: $6.676 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	$6.676 $4.578 $3.887 $3.404 View $2.964 $2.921	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 425ohms 100MHz 28A5131-0A2 Laird 1: $26.164 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	$26.164 $17.534 $16.052	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0350-0B2 Laird 1: $2.086 8.541In 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	8.541In Stock 10.780Expected 10/20/2026	$2.086 $1.482 $1.296 $1.153 View $1.028 $910 $903	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 227ohms 100MHz 28A0434-0A2 Laird 1: $2.459 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	$2.459 $1.746 $1.493 $1.318 View $1.164 $1.142	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz 28A0640-0A0 Laird 1: $3.524 2.453In Stock 4.500Expected 12/15/2026	Mfr. Part # 28A0640-0A0 Mouser Part # 875-28A0640-0A0	Laird	Ferrite Clamp On Cores CLAMP-ON FILTER WHT 240ohms 100MHz Learn More about Laird 28a ferrite clamp filters	Datasheet	2.453In Stock 4.500Expected 12/15/2026	$3.524 $2.437 $2.075 $1.834 View $1.581 $1.471 $1.394	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 240ohms 100MHz 28A0640-0A2 Laird 1: $2.844 1.901In 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	1.901In Stock	$2.844 $1.976 $1.680 $1.482 $1.405	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 348 Ohms 100MHz 28A0807-0A2 Laird 1: $3.920 3.354In 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	3.354In Stock 10.920On Order On Order Ship Dates Mfr. #: 28A0807-0A2 Stock: 3.354 Can Ship Immediately On Order: 3.720 Expected 10/12/2026 7.200 Expected 12/21/2026 Factory Lead-Time: 13 Weeks	$3.920 $2.701 $2.295 $2.020	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 190 Ohms 100MHz 28A2005-0A2 Laird 1: $1.845 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 1/6/2027 Factory Lead-Time: 13 Weeks	$1.845 $1.274 $1.096 $1.008 View $888 $721 $698	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON Fltr 100MHz 280ohms White Case 28A2024-0A0 Laird 1: $4.842 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	$4.842 $3.316 $2.811 $2.613	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WH 320ohms 100MHz 28A2025-0A0 Laird 1: $2.240 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	$2.240 $1.625 $1.307 $1.208 View $963 $962 $893	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 320ohms 100MHz 28A2025-0A2 Laird 1: $1.954 8.202In Stock 10.080Expected 12/31/2026	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 10.080Expected 12/31/2026	$1.954 $1.449 $1.274 $1.197 View $955 $924 $888 $887 $886	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER WHT 250ohms 100MHz 28A2029-0A0 Laird 1: $3.546 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	$3.546 $2.448 $2.086 $1.834 View $1.581 $1.548	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 160ohms 100MHz 28A2432-0A2 Laird 1: $2.964 9.293In Stock	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	9.293In Stock	$2.964 $2.053 $1.746 $1.669	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 130ohms 100MHz 28A3039-0A2 Laird 1: $3.920 1.182In 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	1.182In Stock	$3.920 $2.690 $2.284 $1.998 View $1.735 $1.713	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 260ohms 100MHz 28A3851-0A2 Laird 1: $10.837 1.529In 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	1.529In Stock	$10.837 $7.697 $6.094 $5.731 $5.622	Min.: 1 Mult.: 1
Ferrite Clamp On Cores CLAMP-ON FILTER BLK 210ohms 100MHz 28A5776-0A2 Laird 1: $10.870 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	$10.870 $8.817 $7.378 $6.610	Min.: 1 Mult.: 1

28A Ferrite Clamp Filters

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