Electronics Forum | Fri Sep 10 18:17:21 EDT 2004 | jsloot
This is all very interesting. One obsticle I have to live with is I have an adhesive backing applied to the flex circuit before being placed on the pallet. Once gone through the reflow process the flex board goes through a couple of assembly stages a
Electronics Forum | Sat Jul 03 11:20:08 EDT 2004 | KEN
....not unique. But tough as hell! I build flex assemblies for a major P&P equipment manufacturer. Some are pure flex, most are ridgid flex. And of course, why put fiducials on the boards to help the process (why God, why me?) We use pallets and
Electronics Forum | Sat Jul 03 10:03:22 EDT 2004 | Bryan Sherh
Things to consider are: * Thermal expansion > characteristics of you flex and your pallet > should be better matched. We use G-10. * > Placement of your two sided tape should be > better, more uniformly distributed. We run strips > the length o
Electronics Forum | Tue Sep 14 04:28:36 EDT 2004 | Rob
Hi Dave, 3M� Spray 75 Repositionable 500 ml was the last we used due to a bright spark in purchasing, but production didn't get on with it too well. The only one that really gives us good consistant performance was the original 400ml Spraymount a
Electronics Forum | Fri Feb 16 06:47:38 EST 2007 | CL
vshan, We were using pallets (delmat with cavities for the flex) We put stips of double sided Kapton tape in the critical areas. The tape held up to the heat and kept the circuit flat for the QFP's and BGA's. We based our assembly process for this c
Electronics Forum | Thu May 04 13:35:28 EDT 2017 | jmathis
Hello All, I was given an assembled flex circuit PCB and asked how the board was depanelized as there are no view-able witness marks that I can see. Any ideas? Thanks in advance on any insight to depanelizing without leaving witness marks on the F
Electronics Forum | Wed May 31 07:16:06 EDT 2017 | stephendo
Don't rule out the possibility that the board shop depanelized it and it was assembled after depanelization. Been there, dealt with it, expletives deleted.
Electronics Forum | Wed May 23 13:32:01 EDT 2012 | rrpowers
There is also a good reference book on flexible circuits from Joe Fjelstad. http://flexiblecircuittechnology.com/flex4/ This book covers everything from creating the flex circuitry itself to the assembly of flex circuits. Also, roll-to-roll assemb
Electronics Forum | Wed Mar 20 07:16:03 EDT 2013 | vinitverma
I have customers populating LEDs on flex PCBs (with Aluminum support plates) with sizes up to 1,200mm (say 4ft) even on old Philips/Assembleon Topaz machines. What components are you planning to assemble on your flex PCBs?
Electronics Forum | Thu Mar 14 15:11:33 EDT 2013 | Andy
I am interested in performing SMT Assembly on flex boards that would be a couple of inches wide but 2 to 5 feet long. Obviously quite a challenge. I would like to hear from anyone that may have seen anything similar done, or at least has an idea of h
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