Pack of 5 - 1/2" O.D. 5/16" I.D. Ferrite Toroid Core

Pack of 5 - 1/2
Stock Number: 36629 CH
 Review Average:  
 Number of Reviews: 3
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This item is discontinued & is not being restocked.

Availibilty: In Stock   Units: 171

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Detailed Description

Sold as a Pack of 5
Uncoated, Ferrite Toroid cores suitable for baluns, coupling etc. No Data available.
T: ~1/4" ID: ~5/16" OD: ~1/2" WT: .022/pack

California Proposition 65 Warning WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to

 Product ReviewsClick here to review this item
second test: not an Amidon T-50-2 substitute
I put these toroids in a 4.9 MHz six watt transmitter for the output network. they got real warm, almost hot. I had to retune the network, since the inductance changed after heating up. I took the wire off and wound this same wire onto some Amidon T-50-2 cores. These just got a little warm as usual. So these cores may be a low permeability ferrite. ????? not good for a RF tuned circuit with a little power running through them.
- R. R., LA
yes, Close to T-50-2 in specs
I ordered these since I read from a review that these are similar to a T-50-2. So I did some measurements to confirm this. I have one of these toroids wound with wire for 7 µH and installed in my 5 watt transmitter at around 5 MHz. It is working as the Amidon powdered iron type T-50-2. So I will order more of these next time as they are useful for me.
- R. R., LA
Close to T-50-2 in specs
I wound a few turns on one of these and measured the inductance with an LC meter. With 6 turns I got about 0.5 uh, just about the same inductance as 6 turns on a T50-2 core. So these are powdered iron, not Ferrite. Still useful, but Ive stored them in a different bin than I thought I would.
- Kenneth Scharf, FL