Thanks Susan!

Jack, you're welcome to the picture, just download it off my page...

We've got a few boards built-up...noticed the problem during in-process
inspection (isn't that the way it always is?). But I did go back to the
stockroom and looked at the boards we have in stock...they've got the same
problem.

The 610 and the 600 both state that it's acceptable as long as it doesn't
reduce the spacing between conductive pattern below the required
minimums...it doesn't appear to. But what worries me with condition is that
it seems very easy for contaminates to wick and be trapped in the fibers. The
board is double-sided (not a multi layer), gets conformal coated, and I
believe runs some fairly high power through it...

So is this a reject?

-Steve Gregory-


> WoW!  What a great picture of weave exposure.  Would suggest that you submit
> this to the 600 and 610 groups for inclusion in those documents.
>
> I was going to suggest that you can run a water soluble pen over suspected
> areas and if the glass is exposed the weave will wick up the ink and when
> you wipe it off with a tissue the result will be little colored spots.  If
> it is merely texture there will be no spots.
>
> Did you notice this conditon prior to assembly?
>
> Susan Mansilla
> Robisan Lab
>