Ferrite Ring Combo Pack

The Ferrite Ring Combo Pack is a convenient solution for troubleshooting RFI/EMI from unknown frequencies or multiple frequencies that require multiple suppression mixes. Included in this combo pack are ten 2.4″ OD/1.4″ ID ring toroids as follows:

Mix 75 effective from .15-10 MHz including AM Broadcast band – quantity: 3

Mix 31 effective from 1-300 MHz for general purpose – quantity: 4

Mix 61 effective from 200-2000 MHz for cell phone, WIFI, HDTV, Cable TV interference – quantity: 3

442300399 - Ferrite Ring Combo Pack

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FSB31-3/8, ID=3/8", RFI Range 1-300 MHz, Bulk Pack of 100

Store/Ferrite Core Products/Mix 31/Snap On - Mix 31 - RFI Range 1-300 MHz

Product Details

MPN: FSB31-3/8

Initial Permeability (@ 10KHz): 1500

Material: MnZn

Max cable size - in/mm: .354/9.0

OD (A) - in/mm: .933/23

ID (B) - in/mm: .354/9

Length (C) - in/mm: 1.55/39.4

Z (ohms per bead - single turn 1 MHz): 18

Z (ohms per bead - single turn 5 MHz): 50

Z (ohms per bead - single turn 10 MHz): 81

Z (ohms per bead - single turn 25 MHz): 144

Z (ohms per bead - single turn 100 MHz): 240

Z ohms (per bead - single turn 250 MHz): 270

Ferrite Snap On, ID = .354 in/9mm, Mix 31, pack of 100 pieces

The ring toroids are useful for AC/DC common mode choking with multiple turns as shown below

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AC Cable on F-240 Toroid – 7 turns

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DC Cable on F240 – 4 turns

The ring toroids can also be used on coax or signal lines as shown below:

20131222 125533 300x180 - Ferrite Ring Combo Pack

RG58 12 turns on FT240

20131210 115137 300x180 - Ferrite Ring Combo Pack

Ethernet Cable on F-240 Toroid – 7 turns

For RFI/EMI wrap as many turns as possible for higher choking (under 30 mHz).