All Snap On Split Beads

Store/Ferrite Core Products/All Snap On Split Beads

Often it is difficult to slip beads on a cable because of a plug or connector. Split beads solve this problem. They come in two halves that fit over the cable. A plastic snap cover holds the two halves together and holds the assembly on the cable.

For RFI use, mix 31 is effective from 1-300 MHz, mix 43 works from 25-300 MHz, Mix 61 is for 200-2000 MHz, and mix 75 favors .15-10 MHz. These frequencies are those of the interfering signal to be eliminated, not the operating frequencies of the equipment to be protected.

Not sure of what sizes you need or solving a RFI problem with devices using multiple size cables? Try the Ferrite Snap On Combo Pack which has sizes from 1/4″ to 3/4″ with either Mix 31 (1-300 MHz) or Mix 61 (200-2000 MHz) or Mix 75 (100 KHz – 10 MHz).

SNAP ON Sizes for Heliax and Coax Cable

Shown below in the table are the SLIP ON and SNAP ON products for various popular Heliax and Coax cables. These are the correct size for making sleeve chokes – See above table for technical details.

SNAP per Coax - Wall Wart RFI Noise Filter

FSB Mix 31 - RFI Range: 1-300 MHz

FSB Mix 43 - RFI Range: 20-300 MHz

FSB Mix 61 - RFI Range: 200-2000 MHz

FSB Mix 75 - RFI Range: 150 Khz-10 MHz

Refine by

Sort by

Filters

Clear all

Filters

Clear all

On Sale

Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)

SKU FMSCP-31-10

List price ~~$55.95~~

Save 11%

$49.95

On Sale

Ferrite Mini Snap On Combo Pack, Mix 61, RFI Range 200-2000 MHz - 6 filters

SKU FMSCP-61-6

List price ~~$55.00~~

Save 9%

$49.95

On Sale

Ferrite Mini Snap On Combo Pack, Mix 75, RFI Range 150 KHz-10 MHz - 6 filters

SKU FMSCP-75-6

List price ~~$85.00~~

Save 6%

$79.95

Ferrite Snap On Sampler Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (1/4, 1/2, 3/4, 1)

SKU FSOSP-31-10

$59.95

Wall Wart switching DC power supplies that plug into the AC power line plug and provide DC power to laptops, routers, battery chargers, cell phone chargers, etc are a known source of broadband RFI (a.k.a dirty electricity) that effects many electrical devices including computers, radio receivers, HDTV systems, etc. In many cases this extra RFI noise effects computer I/O speeds since they have to error correct the information packets many more times due to the noise interference causing packet errors. A ferrite ring can often increase data throughput by reducing the error correction to normal rates.

A simple ferrite ring filter on the DC power line can help suppress the RFI noise affecting the victim device or keep the DC power cord from acting as an antenna and radiating RFI into other victim devices. This kit is also useful on laptop computer supplies, routers, cable modems, wireless phone charges, etc.

RFI WW Installation 300x288 - Wall Wart RFI Noise Filter

Installation is quick and easy: Just wrap the DC power cord through the center of the ring filter as many times as you can and reinstall. For best results with long DC power lines, use one at the ring filter at the wall wart end (to prevent the wall wart power supply from using the DC line as an antenna) and another at the DC plug end (to prevent the electronics in the powered device from using the DC power cord as an antenna). Typical installation is shown below:

The filter suppresses RFI in from .1-100 MHz. Inside diameter is 3/4 inch/19 mm.

Since most households and office environments have multiple wall warts we offer the Wall Wart RFI Filter kit in bulk quantity packages.

Known RFI Generators include Roku/Sling-TV power adapter - Interference heard in the AM broadcast band
 and harmonics.
Also many ethernet Cable/DSL modems, cell phone chargers, computer power adapters have the same issue:
using the AC or DC side of the power supply as a radiating antenna.

RFI solution is to use a linear power supply, change adapters or wall wart ferrite filters