Re: Reliability of components

On Wed, 10 Dec 2008 00:57:45 -0600, "dohzer" <dohzer@xxxxxxxxxxx> wrote:

Thanks for the replies guys (and sorry for not replying earlier).
I've done my reliability calculations and at the moment it looks like I
will need a few high reliability/quality resistors and capacitors.

Does anyone know where I would start looking for "MIL-R-10509" or
"MIL-R-22684" spec resistors and "MIL-C-11015 Non-Est Rel" spec capacitors.
I've done a few searches and can't seem to find much. I'm not too sure if
this is because these standards are non-existent anymore (anyone know?) but
I also don't seem to see a lot to do with resistor quality when searching
for components.

If anyone has some tips they would be appreciated.

SecDef policy as of 1994 is to use "performance standards" and
commercial specs in place of mil-specs. Goal: cost savings and faster
access to advances in commercial technology.

UNCLAS, non-restricted mil-specs and standards are available on-line
through the ASSIST database, at http://assist.daps.dla.mil/quicksearch/.

What you may wish to do instead of tracking down qualified MIL parts is
to bump the predicted reliability up a notch by spec'ing components with
higher temperature, current, or voltage ratings and see how that affects
the calculations.

--
Rich Webb Norfolk, VA
.

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