---- May 23rd 2024 ----

Call: 1 (800) 377-3244
Monday to Friday 8 A.M. - 5 P.M. (Pacific Time)
E-mail questions to:

Pricing is subject to change depending on product availability and backorders.
*Please Note: Contact us for items without price.

Ferrite Shielding Beads for RFI / EMI Suppressions

Ferrite beads are useful in the attenuation of unwanted RF signals. When dealing with noise problems, it is helpful to know the frequency of the interference. This will determine the correct materials to use. There are many sizes and materials available.
SMALLER BEADS are possible to be slipped leads through a hole and are a single turn device.
LARGER BEADS are shaped similar to a cylinder or long toroids. A few turns through them suffice to provide a higher attenuation.
BEADS ON LEADS come with leads already attached to the ferrite and have single or multiple turns.

For technical details, please visit our technical website:
Download Specifications and Data sheets in .PDF
Low order fees are charged to total a minimum payment of $25.
Quantity marked in red is subject to availability and prior sales, or back order.
Orders are processed in 2 to 3 business days.
Please call for volume and price inquiries or email

CWS Bytemark reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice.
CWS Bytemark also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice.
CWS Bytemark highly recommend customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions.

WARNING: This product can expose you to chemicals, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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Tel: (714) 279-9010, Fax: (714) 279-9482
Toll Free: 1-800-679-3184 or 1 (800) 377-3244
CWS 353 West Grove Ave. Orange, California 92865

Copyright (C)2008-2021, CWS Bytemark
Updated 2021 Jan. Rev. V4.0