Re: Self healing caps

• To: tesla-at-pupman-dot-com
• Subject: Re: Self healing caps
• From: Stan <sdarling-at-columbus.rr-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 29 Dec 1999 12:04:15 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>

~SNIP~

> They can take tens of thousands of blow throughs before the cap really
> fails.  We have pulled apart over voltaged ones at work were 30% of the
> metal has been blown out but the cap still appears good other than the
> value has decreased.  they measure the value to judge how bad the metal
> removal is.  That's why we try and monitor the value of MMCs to check for
> damage.  However, they seem rock solid even in my highly stressed versions.

Does anyone have an real life experience as to when the cap will fail
w.r.t. the  % of its capacitance drop (eg caps tend to fail when the
EMMC loses 5% or more of its original capacitance)?

-Stan

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