[600MRG] FT-37-WC toroid

[Eric NO3M]

Paul

The Magnetics cores should work well, I've used them for various 
applications at LF.  I assume this is for an RX or lower power TX 
application.  If you need something for higher power applications, I've 
used any of the following for transformers in LF/MF amplifiers:

Magnetics ZW43615TC
EPCOS/TDK B64290L0674X038
Ferroxcube TX36/23/15-3E10-M

All current amplifiers are using the Ferroxcube ones.  All of the above 
can be sourced from Digikey.

GL 73
Eric NO3M



On 11/20/24 3:43 PM, Paul N1BUG FN55mf wrote:
> I've bought parts from Amazon, but I don't entirely trust them. They
> don't admit to having these high permeability toroids.
>
> Since learning this is u=10,000 material, I found two options that
> should be very near equivalents to the FT-37-WC.
>
> Uncoated:
> Fair-Rite 5976000201 at 67 cents each from Digi-Key
>
> Parylene coated:
> Magnetics YW41003TC at 68 cents each from Digi-Key
>
> Parylene is rated to 130 degrees C vs. 200 degrees C for the epoxy ones
> from Amidon, but if they ever get anywhere near that temperature I've
> got much bigger problems!
>
> I'm ordering a few of each. The price goes down significantly if you buy
> 10 or more.
>
> 73,
> Paul N1BUG
>
>