Electronics Forum | Tue Jan 12 15:04:40 EST 1999 | Earl Moon
| I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chi
Electronics Forum | Tue Sep 18 12:55:46 EDT 2001 | rob_thomas
Hello , any specific insights about printing on flex circuits?
Electronics Forum | Thu Sep 22 18:23:14 EDT 2005 | arnie
Hi, I am having a problem with component position on a flex circuit. It is an eight up panel. The flex circuit is mounted on to a piece of fr4 with presure sensitive adhiesive, this is done out of house. The problem is, I will locate the parts on one
Electronics Forum | Fri Sep 23 08:35:05 EDT 2005 | jdengler
I agree with the local fids concept. This is usually a problem since the flex will most likely not have fids. However if your components are 50-mil pitch and 1206 or larger, you could use tooling holes to align the flex circuits when they are attach
Electronics Forum | Fri Sep 23 04:14:02 EDT 2005 | Rob
Yes it is a problem with nearly all flex's, & Doug's way is also the way we do it.
Electronics Forum | Wed Sep 19 13:43:49 EDT 2001 | jschake
I cannot report having experience with 0201 printing applications on flex circuits. Generally, I would be concerned with handling of the flex substrate. A carefully designed vacuum capable custom tooling fixture would likely be required to ensure p
Electronics Forum | Fri Sep 23 03:10:03 EDT 2005 | dougs
Sounds like your using global fids, if there are marks on each board use local fids and that should help.
Electronics Forum | Fri Sep 23 11:13:10 EDT 2005 | arnie
I have been using local fids, and the machine comes up with board stretch or shrink errors on some boards.
Electronics Forum | Fri Sep 23 11:32:53 EDT 2005 | PWH
Increase search box size for fids if you can.
Electronics Forum | Sat Sep 24 00:47:33 EDT 2005 | Ken
If your having placement problems are you having printing alignment problems?
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