Frequently Asked Questions. Still don't see what you're looking for? Ask The Advisor

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Are all of Fair-Rite’s products RoHS compliant?

YES. All of our products are RoHS compliant and have been since 2005. You can access the RoHS certificates here.

Where can I find Fair-Rite’s Conflict Materials Report?

You can find that report here.

I need a sample part to test. Is this possible?

We’d be happy to! Please complete our Sample Request Form and someone will be able to assist you.

What material performs best for an EMI problem at my particular frequency?

for 150kHz -10MHz : 75 material,  for 1-300MHz : 31 material, for 25 MHz-300 MHz: 43/44 material,  for 200MHz- 1GHz : 61 material.

How does the part numbering system work?

Standard Part

Flex Part

chip beads

chip arrays






What is the temperature rating of your parts?

Temperature rating information can be found here. 

What is the max temperature that a ferrite core can be subjected to before permanent damage occurs?

Generally speaking it is the material type’s Curie Temperature, where the ferrite loses its magnetic properties; when the temperature returns to below Curie, the magnetic properties return but, in some instances, not to where they were before the exposure to high temperature. Physically, electrical and magnetic performance aside, ferrites can withstand temperatures in excess of 1000 deg C without melting but can crack due to fast temperature change.

What are the storage condition requirements for Fair-Rite parts?

Storage condition requirement information can be found here. 

Do I need to protect the parts in an outdoor application?

Ferrite material by itself (without a conductor or plastic enclosure) is fairly inert when it comes to adverse environmental conditions. However, electrical properties do change with temperature. The concern with conductors is the same as with any other electronic component. Plastic cases are polypropylene and can degrade with UV exposure over time. Additionally, the plastic-cased parts are not really intended for outdoor or extreme temperature installations. If this kind of part is used in such an environment, it would be judicious to wrap the component with robust tape, nylon cable ties, or other holding mechanisms around the plastic case for security as the plastic can deform at temperatures below 0°C or above 85°C.


I have a part number and I need to know if you have it in stock. What should I do?

You may check our stock here. Contact Fair-Rite directly or one of our authorized distributors to verify availability. You may do that here.

I only need to purchase a few parts. Who should I contact?

You can purchase our parts through one of our Authorized Distributors. Find their information here.

I have an old Fair-Rite part number. How do I find its equivalent?

Glad to see you’re back! Please submit your part number to our Ask the Advisor form and a technical engineer will be able to help!

What is the average lead time for an order?

When no inventory exists at the factory or with distributors, typical lead time to manufacture in the US is 8-10 weeks after receipt of order (ARO).  For any parts manufactured in our China facility, lead time would be up to 30 weeks. For more information on the current shipping and logistic situation CLICK HERE

How are solid cores secured to a cable?

Possible solutions are a tie wrap on the cable at each end of the core, over mold, heat shrink tubing or tape.

I installed some of your Snap-It ferrites and now I want to move them to a different cable. How do I un-snap them?

Only the very old Snap-It devices do not have an easy to use latch for opening. We do not recommend snapping and unsnapping more than a couple of times, since these latches are not that robust and could break or weaken. Careful prying of the latch with your  hand or a flat head screwdriver will unlock the case.

Are Fair-Rite’s products UL approved?

Fair-Rite does not have UL ratings because the end product is what would be rated. The resins for the plastic cases and the material used for conformal coatings from our suppliers have UL file numbers.

Are ferrite beads considered ESD sensitive?

Ferrite cores are a soft magnetic ceramic material and are not affected by Electrostatic Discharge.

Can you supply the ECCN (Export Control Classification Number)?


Can ferrite cores be welded to an object?

No, they can not because there is no metal to adhere to in a ferrite.

Where can I find Fair-Rite Product’s Conformal Coating information?

Fair-Rite Product’s Conformal Coating information can be found here!

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