I found this in the huge pile on my desk. I have no idea where I got it or why. Probably for passive filters. Anyway...Is there a difference between the yellow and red-brown cores? The two little ones shown are almost identical in dimensions.

 

Is there a difference between the yellow and red-brown cores?

Yes, but I don't remember what. lol I will look.

 

Hello,

They are probably powder iron cores.
The attached PDF will show you the information from Amidon.

Bertus

 

Hello,

They are probably powder iron cores.
The attached PDF will show you the information from Amidon.

Bertus

Good info in that pdf. Thank you!