SMD electros ?

[Bob Parker]

Ross Herbert <rherber1SPAMEX@bigpond.net.au> wrote:

Hey, ya can't knock aluminium electro's Bob. After all, we wouldn't
have a need for your ESR meter if they weren't so prone to failure,
would we?
-

G'day Ross,
Well that's a completely different way of looking at the problem!
If the rotten things were reliable, I would never have had to figure
out how to check them in my own repair situation I was in back then.


Bob

 

[The Real Andy]

On Mon, 16 Aug 2004 10:48:02 GMT, Ross Herbert
<rherber1SPAMEX@bigpond.net.au> wrote:

On Sun, 15 Aug 2004 05:47:38 +1000, Bob Parker <bobp@bluebottle.com
wrote:

|Hmmmmm,
| I thought it was fairly common knowledge that the most unreliable
|electronic components of all are SMD aluminium electrolytic caps...?
|They are the major cause of camcorders failing, for example.
| Someone once told me that NASA won't allow aluminium electrolytic
|caps to be used in any flight control systems on their spacecraft,
|which says something about what horrible components they are.
|
|Bob
|
Hey, ya can't knock aluminium electro's Bob. After all, we wouldn't
have a need for your ESR meter if they weren't so prone to failure,
would we?s
-

The other reason is there is no substitute for Electro's in PSU
bypassing type situations. You can try Tant's, but they go bang when
you throw them a little too much ripple. Electro's are good at 125kHz
where tants seem to fail. It's a pitty they cant make SMD Electro's
more reliable.

 

[Mark Harriss]

Sorry no, they are too tiny. I bought them over time
from Vorlac and Rockby. I speculate that the engineering
compromises needed to make such small components means there
is no margin for ageing, drift, misuse etc.