Ummmmmm......
Houston, you may have a problem. It falls
into this category, and all logical differands will be CAP LOCKED.
IF you don't conformal coat this product
AND
IF this product has a life of more than 5 years
AND
IF this product is subjected to vibrations as
spelled out in varous UL tests you have a problem.
OR
IF you don't expose this product to anything BUT
50-80F and the product never is exposed to extreme humidity AND you can
guarantee the product won't be severly vibrated OVER TIME.... you're
okay.
I wish I could dislose more but 2-4-6-8 everyone
likes to litigate (If you get my drift...)
Mark Ross
----- Original Message -----
Sent: Monday, August 13, 2001 2:40
PM
Subject: [TN] 6-pin DIP Optocoupler
problem...
Hope you all are having
a joyous Monday like I am...
Got pulled over by one of the inspectors
this morning because we have this
little 6-pin DIP optocoupler that only
goes about 65-per board. On some of
the parts we're seeing exposed copper
up on the shoulder of the leads as it
comes out of the body.
Go
to: http://www.stevezeva.homestead.com/index.html
and take a peek...
What's kinda' strange is that this only
happens on the pin-1 side of the
part. I've determined that we're getting
the parts in like this...I found
some of the problem parts in tubes that
we haven't done anything to yet...
In looking really close at the
parts, there seems to be some sort of film
coming out of the body that
covers the shoulders and prevents the leads from
plating fully (the
picture is on the page as well)...it's almost like some
sort of thin
plastic sheet...or could it be an adhesive preform that bond the
two
halves of the part together? (I don't have a clue how these parts are
made).
Anyways, should I worry about these parts? There's some
people here that's
worried about the exposed copper (here we go again...)
and want to touch it
up. I feel that there really isn't a problem because
it's so high up the lead
that it shouldn't hurt anything....if I were
concerned about anything, it
would be about that stuff that is coming out
the body of the part...
The part seems to work fine, we ICT the
boards, and do a ambient power-on
burn in for 24-hrs...everything is
okie-dokie. This is a class-2 board by the
way.
Thanks again, and
have a lovely Monday...hehehe
-Steve Gregory-