Ferrite Toroids (Iron Powder)

Iron Powder Toroids for you homebrew baluns and transducers.

  • The last digit (-2 or -6) tells the material type.
  • -2 = Material type 2, red-brown, useable from 1 to 30 MHz.
  • -6 = Material type 6, yellow, useable from 2 to 50 MHz.
Type AL value [nH/N²] Outer Diameter [mm] [mm] Height [mm] Price
T-12-6 1,7 3,18 1,57 1,27 0.45 € Add to shopping cart In stock, shipped in 1 or two days.
T-16-2 2,2 4,06 1,98 1,52 0.45 € Add to shopping cart In stock, shipped in 1 or two days.
T-16-6 1,9 4,06 1,98 1,52 0.45 € Add to shopping cart In stock, shipped in 1 or two days.
T-20-6 2,2 5,08 2,24 1,78 0.45 € Add to shopping cart In stock, shipped in 1 or two days.
T-25-6 2,7 6,48 3,05 2,44 0.45 € Add to shopping cart Unfortunately this product is not available anymore. Sorry.
T-37-6 3,0 9,53 5,21 3,25 0.50 € Add to shopping cart In stock, shipped in 1 or two days.
T-50-2 4,9 12,7 7,70 4,83 0.60 € Add to shopping cart In stock, shipped in 1 or two days.
T-130-2 11,0 33,0 19,8 11,1 3.85 € Add to shopping cart In stock, shipped in 1 or two days.
T-200-6 10,0 50,8 31,8 14,0 13.00 € Add to shopping cart In stock, shipped in 1 or two days.
T-400-2 18,0 102 57,2 16,5 35.00 € Add to shopping cart In stock, shipped in 1 or two days.

Ferrite toroids

For general applications.

For example, to eliminate interferences in the stereo system of your neighbour, in case of direct interference into the amplifier or loudspeakers.

Order No.
40094.35 35 x 23 x 15mm, AL 900 nH/W² 4.00 € Add to shopping cart In stock, shipped in 1 or two days.
40094.58 58 x 34 x 13 mm 7.50 € Add to shopping cart In stock, shipped in 1 or two days.
Info freight charges

Ferrite toroids

Assorted Ferrite Cores

Selection contains:

  • 2x ferrite toroids for 5 mm cable (article 40092.5)
  • 2x ferrite toroids for 9 mm cable (article 40092.9)
  • 2x ferrite toroids for 11 mm cable (article 40092.11)
  • 1x Large ferrite toroids, rectangular (article 40090)

Order No.
40092.BUNDLE 35.00 € Add to shopping cart Not in stock, back on: 26. Apr. 2018
Info freight charges

Angular ferrite toroids Clamp-On Ferrite

Fight interferences with toroidal ferrites (clamp-on ferrites). Just wrap the cables of the affected device once or several times around the toroid, close it, ready. Suitable for all types of cables. Optimal frequency range 0.5 to 200 MHz.

Order No.
40090 9.50 € Add to shopping cart In stock, shipped in 1 or two days.
Info freight charges

Round Ferrite core


Ferrite Cores

For all kind of round cables (Datac ables, coax cable, rotor control etc.). Very good suited for fighting interference of computers (keyboard or USB cable)... some PCs just can't stand the HF power.
Depending on the situation to be installed at either end of the cable. A selecteion of ferrite cores is a must for every DXpedition!

Of course you can try to build a common mode filter with these cores, but you will need several cores on the cable (at least for shortwave). If you are looking for ready made common mode filters, check our article 11368, right here.


Product Max. Cable diameter Length Diameter Type Price
40092.5 5.4mm 29.4mm 15.9mm Round 3.80 € Add to shopping cart In stock, shipped in 1 or two days.
40092.6 6.1mm 23.4mm 14mm Square 4.30 € Add to shopping cart In stock, shipped in 1 or two days.
40092.9 8.9mm 35.1mm 19.5mm Round 4.80 € Add to shopping cart In stock, shipped in 1 or two days.
40092.11 11.7mm 33.0mm 23.0mm Square 4.90 € Add to shopping cart In stock, shipped in 1 or two days.
40092.13 13.0mm 36.0mm 23.0mm Round 5.50 € Add to shopping cart In stock, shipped in 1 or two days.