Electronics Forum | Fri Aug 20 10:34:21 EDT 2004 | John S
Can anyone recommend a manufacturer of prototype flex circuits that could deliver a 4 layer board in 2-3 days? Thanks John S
Electronics Forum | Wed Jul 10 18:19:42 EDT 2002 | davef
Flex cracking under the terminations is generally regarded as one of the primary causes of failure of ceramic chips. If you can see cracks in the solder joints from board flex, those chips are certainly strongly suspect, and you must assume there is
Electronics Forum | Tue Nov 27 12:18:08 EST 2001 | Justin
We are currently looking for a way to measure pcb stress during our assembly process. We would like to get an idea of what amount of stress (flex) the boards are undergoing. We would also like to use this to compare a few different processes--for e
Electronics Forum | Sat Aug 22 15:12:32 EDT 2009 | rossi
Thank you for replying. 1) the finish is Gold Immersion (ENIG) 2) paste type EM907 SN96.5/AG3.0/CU0.5 3) it is always the same BGA but its not on the same ball every time. It is always at the joint on the PCB pad like the solder is not sticking prope
Electronics Forum | Fri Sep 15 20:29:08 EDT 2006 | John S.
Our designers are working on a product that would require a board to be folded back on itself or joined to a daughter board with connectors. Rigid flex would work, but is too costly. I've seen applications of a rigid board being selectively soldere
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 | Thu Jul 27 12:20:33 EDT 2006 | David
Hello all, We have customer who wants to produce boards 0.4 mm thick. But they have not allowed to put into the panel. Board has not regular shape so without pallet it is not possible to produce. I made pallet where is pocket the same shape as boar
Electronics Forum | Tue Mar 01 10:04:21 EST 2005 | Rob
We used durastone pallets, where you mill out the profile of the panel or board and it sits flat for printing. We secured them using 3M spray mount (for singled sided) and Kapton tape. Obviously helps to have bottom side heating in the oven as you
Electronics Forum | Fri Dec 19 17:20:17 EST 2008 | davef
We don't know dip a about rigid flex. Flexdude wrote "Hot-Bar Soldering, Attaching Flex Circuits Directly To Rigid Boards" [http://www.flexdude.com/Back%20Issues/FCN11-00A.PDF ]. It may help you get started while waiting for others reply. We have n
Electronics Forum | Fri Mar 16 23:38:36 EDT 2007 | mika
I don't understand so please explain in more detail. You say ~0.3mm shifted. In what direction is the paste shifted? is it shifted the very same directions on all panels? Only on this product or even with regular pcb:s? What is the size of the panel
