[R-390] C553

[David Wise]

Thanks, I found it.  Good reading on April 28.  Geez, we talked about the same thing.
I had completely forgotten the previous go-round, so we are just recycling an old topic.
I think that's half the traffic on this list!  :)

Consider my previous post the yearly stock update.

That several hundred ohms series resistance might have limited the event energy; optimum self-heal might require a low-impedance source, same as tantalum electrolytics.  Do you know if the manufacturers claimed that the energy stored in the cap is enough for a good clear?

It's interesting that your test protocol included power-off/on cycles.  I seem to recall that at least one of the reliability predictors factored this in, and it had more effect than I expected.

Best regards,
Dave Wise

-----Original Message-----
From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Charles Steinmetz
Sent: Wednesday, August 06, 2014 1:31 PM
To: 390 list
Subject: Re: [R-390] C553

David wrote:

>Thank you for your testing, Charles, I wondered about that.  It's 
>great to have it nailed down.  That narrows it to pure film/foil or 
>C0G ceramic.

If you look in the archive, there are posts beginning on 4/24/13 in 
which I summarized the testing I had done.

Best regards,

Charles