Electronics Forum | Wed Mar 15 04:32:14 EST 2006 | rlackey
Hi Brad, I don't know if this helps, but we had a policy of not accepting x-outs on rigids, and of max 10% per panel on Flexy boards (as long as the local fiducial was blacked out for the bad board) I'm always suspicious of x-outs as it points to pr
Electronics Forum | Thu Sep 21 20:37:21 EDT 2006 | basem
Does anyone on this forum has experience with any of i-PULSE SMD placement systems? I am looking at the M4e. Also, can someone advise me on what to choose if the desired final circuit is of very high density and small pitch (0.5mm)? I am considerin
Electronics Forum | Fri Sep 10 11:27:18 EDT 2004 | rlackey
Hi John, We use Spray mount adhesive on durastone pallets, then kapton tape on the egdes. We have produced upto 25K flexi PCB's a day with this method. The trick is to get just the right amount on the pallet, to maintain tackiness. Cheers, Rob.
Electronics Forum | Sat Oct 12 07:54:29 EDT 2013 | mandysmile
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Electronics Forum | Tue Jan 19 10:23:23 EST 2021 | grahamcooper22
Do any assemblers use AVX FLEXITERM components ? Anyone experience any instances where the devices look to have soldered well, but then when handling the pcbs, and maybe with a little bit of pcb flex..the CHIPS just drop/pop out the solder fillets ?
Electronics Forum | Tue Jul 11 10:13:22 EDT 2006 | SWAG
Over time, you might see problems with delam., blistering and warpage if using FR4 carriers. Depending on volumes, you might consider using durostone or some robust material like that for the production runs. Keep in mind that switching materials w
Electronics Forum | Sat Feb 02 09:48:27 EST 2002 | davef
We've talked about assembling on flex previously. Search the fine SMTnet Archives for background. Issues that come to mind [which is very risky, given that this Saturday morning and last night was at Jimbo's] are: * Use carriers that can flow thoug
Electronics Forum | Wed May 08 10:56:32 EDT 2002 | cmay
If you are talking about "low" volume another option you could consider is using a waffle tray. At a previous company we made low volume high value flexi-rigids. Like you, no-one would buy volume on reels. Luckily we had our own machine shop and we m
Electronics Forum | Fri Jul 07 03:27:31 EDT 2006 | dougs
Hi folks, thanks for all the tips. We have run our first batch of these flexi boards now. I had the PCB suppliers make me some 1.6mm FR4 carriers to lay the boards on to carry them through the process. (1 flat & 1 with cutouts for the second side)
Electronics Forum | Thu Nov 30 04:02:26 EST 2000 | Chris May
Michael, Thanks for your response. More info:- The processes are as follows, Stencil Print (6 thou on DEK 248) Placement on Contact 3AV and Reflow on BTU 4 zone Top & Bottom oven.It is not an In-Line system. Our board technology is mixed but heavi
