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Ferrite Clip On HEM3012

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Quoting product code: N89AB


About this product


  • Clip-on ferrite ring HEM3012

Product overview

  • Clip-on ferrite ring HEM3012
  • Designed to cure electromagnetic and radio frequency interferences

A clip-on ferrite ring designed to cure electromagnetic & radio frequency interference at source. Always choose an internal diameter close to that of the cable or wind through several times. Always put ferrites at the noisy end of the cable.


Order Part Max Max Min Attenuation (Ω)
Code number diameter length hole dia 25 MHz 100MHz
N89AB HEM3012 13 25.5 2.4 93 158

Hi, on the BBC channels I have  between 8 &9 out of 10 for signal quality and  perfect strength (10) on my freeview box however I'm getting lots of interference. Other channels are good with a lower signal qual / strength. Could this help?

Asked by: Johnny
Unfortunately, we cannot guarantee this would work for your specific purpose.
Answered by: Dale
Date published: 2017-12-03

I am getting high frequency hiss / buzz between a musical keyboard and an keyboard combo amplifier speaker. Will puting one on the audio jack lead between the two help?

Asked by: valleyboyo
It may help to fix this.
Answered by: Dominic
Date published: 2017-09-08

My car camera interferes with radio reception. Would this ferrite clip help clear the loss of station. The radio works fine when the camera is off or running on battery only.

Asked by: Waldo
I would suspect the problem lies with the vehicle electrical system, or possibly the 12v power adaptor for the camera. I don't think a ferrite is going to he help in this instance.
Answered by: Les
Date published: 2016-11-29

The radio in my motorhome picks up a good range of stations without interference unless the reversing/ rear view camera is switched on. Then I get interference on all stations. Will a ferrite clip on the aerial lead going in to the radio help with this?

Asked by: JProsser
Unfortunately we are unable to guarantee full compatibility for this item.
Answered by: Dominic
Date published: 2016-09-09

What attenuation does this item provide? Your table shows attentaion in ohms but ohms is impedance! How many dB attenuation at what frequencies? What ferrite is it made from? It is less risky to buy elsewhere as you don't provide useful information!

Asked by: Mr T
Hi, you are correct attenuation should be rated in db, I have asked our content team to update all the Ferrites to the correct standard, this should be completed in the next few days.
Answered by: Russell
Date published: 2016-08-10

When I said what mix, what is the material mix? 31, 43 etc.? What are the characteristics at what frequencies?

Asked by: Martin
Apologies for the misunderstanding, I will request this information for you.
Answered by: Russell
Date published: 2015-10-12

What mix are these?

Asked by: Martin
These are sold singular per pack i.e one per pack. The picture shown represents all the types of this kind of Ferrite ring that we currently have in our stock inventory. Sorry for any inconvenience this has caused.
Answered by: Darren
Date published: 2017-05-03

To stop HID lamp ballast interference on the car radio, where would these be fitted?

Asked by: Barrie
You may need one on the radio or the ballast, but we would not be able to say as we have no experience fitting it to this kind of setup.
Answered by: Dominic
Date published: 2015-08-19
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