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'[EE] Propper storage of static sensitive items.'
2008\04\12@112018 by piclist

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I have a fairly large collection of IC's and other electronic parts
(although most are several states away from me at the moment) and was
wondering how most of you store your stuff?

IC's stuck into anti-static foam is good and I try to do that as much as
possible, but often the foam is stored in a plastic container which is NOT
conductive and so builds up static which can still be dangerous.

Are there any clear anti-static sprays one could use to coat storage
containers to help with this?  anti-static foam doesn't help much with
lots of loose items either which makes storing them a pain as well.

I have a lot of plastic hobby-type boxes with subdivisions inside that
work great for passive parts, and it would be nice to use them for
sensitive ones as well.

What I would love is more containers like this Microchip sample box I
picked up at a Hamfest:

www.ian.org/Remote/MicrochipStorage1.jpg
http://www.ian.org/Remote/MicrochipStorage2.jpg

I have tried things like this.. but I find it annoying to work with.

http://www.ian.org/Remote/BugBox.jpg

Also... is there a way with a multimeter to test anti-static properties?  
Conductive foam is easy, and the black boxes above have very low
resistance too.  But anti-static bags don't test as conductive at all.
I have a 5Kv leak tester (again, not HERE) but I am not clear if that
would test if a charge is building up or not.

A test I just tried was the old plastic bar rubbed on rabits fur trick.
Rubbing the black boxes (whout chips inside!) then testing them showed
they collected no charge.  Same with a silver EST bag.  Pink anti-static
bags hold a small charge, and the Bug Boxes become highly charged, making
me wonder if I should use them at all.  They are supposted to be made with
anti-static properties.

So.. just what am I to make of all this?  I defer to actual electrical
engineers here. :-)

--
ian SMith
http://www.ian.org

2008\04\12@120103 by Bob Axtell

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piclist@ian.org wrote:
{Quote hidden}

There is a spray compound called "cling free" that women use to reduce
static electricity when they
wear nylon stockings and hose. It works wonders on carpet, desktops, and
plastic trays and boxes.
But when it dries, the effect is mostly lost. There is also a carpet
spray that does the same thing, and
it takes a while for the chemical to dry out.

One thing that works for us is to use empty anti-static bags inside the
drawers. Just place the parts on top
of the anti-static bags.

But the best solution to ESD problems is a properly-grounded work
station, with an antistatic wrist clip.

--Bob A  

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