Question for Scott: i work in the tv shop of a major hotel/casino in
vegas...what am i missing, derate ? ex. if a 10 ufd @ 16 volt needs to
be replaced, usually it is replaced with a 25 volt...that helps with
spare part inventory, and records show, so far no second replacement,
of cap. Please no flaming, i really want know...TIA Gene

"Gene" wrote in message
oups.com...
Question for Scott: i work in the tv shop of a major hotel/casino in
vegas...what am i missing, derate ? ex. if a 10 ufd @ 16 volt needs to
be replaced, usually it is replaced with a 25 volt...that helps with
spare part inventory, and records show, so far no second replacement,
of cap. Please no flaming, i really want know...TIA Gene


I think you figured it out: by derating he meant using a higher voltage
rated part to replace the original. If a small additional cost isn't
objectionable, you'll also find there's a higher temperature rated series
of electrolytic caps available too.

Pete

Gene wrote:
Question for Scott: i work in the tv shop of a major hotel/casino in
vegas...what am i missing, derate ? ex. if a 10 ufd @ 16 volt needs to
be replaced, usually it is replaced with a 25 volt...that helps with
spare part inventory, and records show, so far no second replacement,
of cap. Please no flaming, i really want know...TIA Gene

You're not missing anything. Although I recommend buying only caps
rated for 105'C because they seem also to last longer than the 85'C
spec ones. But that's exactly what I mean.
-scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Scott Dorsey wrote:



You're not missing anything. Although I recommend buying only caps
rated for 105'C because they seem also to last longer than the 85'C
spec ones. But that's exactly what I mean.
-scott

The way it was explained to me is that the 105's use a different
electrolyte and tend to have lower ESR, etc. I used to bench repair a
certain power supply that would make short work of ruining an 85...only
a 105 would hold up. And it wasn't a heat issue.
They seem to be worth the few extra pennies in cost.

-Bill