Electronics Forum | Thu May 24 15:10:23 EDT 2001 | caldon
ernman - From your question.........All the top PNP companies are good.....with that aside what is the requirements? High mix/low vol? Flexibility? High through put? Big Boards? Change over?Low mix/ high Vol.? This will help with ruling out companie
Electronics Forum | Thu May 24 16:51:04 EDT 2001 | Robert Culpepper
Does anyone have any sort of Chart comparisons for the advantages of SMT over Through Hole? I realize this is old material and for that reason I believe it's now hard to come by (in presentation format). I know someone trying to convince a mature ent
Electronics Forum | Thu May 24 19:19:20 EDT 2001 | davef
Try: * Poor looking solder connections * Good looking solder connections * Reliable solder connections Look to Ch 5 of "Manufacturing Techniques For Surface Mounted Assemblies"; RJ Klein Wassink & MMF Verguld; Electrochemical Pub; ISBN 0-901150-30-4
Electronics Forum | Tue Jun 05 22:18:47 EDT 2001 | Dreamsniper
I don't understand why you wanna do this. The vendor has done this part for you and actually they have a recommended glue / solder paste life on the stencil or pcb (e.g. 6 hrs, 8 hrs.). If you will stick with their recommendations you won't be lost p
Electronics Forum | Wed May 30 10:52:03 EDT 2001 | hussman
Why yes, I do have vacuum on my printer (God bless MPM!). I see what you're saying - use a pallet and have vacuum holes to hold the flex circuiut! Wow, it just got a little brighter in my cube! Oh, the light bulb above my head just went on. Thank
Electronics Forum | Wed May 30 15:40:14 EDT 2001 | davef
Slappy, Most of our discussions about flex came before the last great SMTnet.com server transition that destroyed the archives. Consider custom building carriers with tooling holes, vacuum line holes, alignment pins, multiple layers, etc. from uncl
Electronics Forum | Wed May 30 11:47:27 EDT 2001 | keith47611
When considering a new semi-automatic stencil printer, for low volume high mix production, could anyone elaborate on the benefits of vertical lift-off versus a Clamshell design? Money can be saved with a Clamshell design, but what specific limitatio
Electronics Forum | Fri Jun 01 01:15:58 EDT 2001 | Brian Sloth Bentzen
Dear Keith. A vertical lift of stencil or vertical lowering of the PCB is best way to control the separation speed which is essential in fine pitch printing. The clamsheel lifting will give a different separations speed depending on the distance fro
Electronics Forum | Wed May 30 15:15:03 EDT 2001 | Jesse Katzman
Hello, I'm the director of publications for the SMTA, and we're testing the distributed content technology developed by SMTnet. I'm primarily testing the function of posting a new message, thus creating an entirely new thread, but would welcome inpu
Electronics Forum | Wed May 30 17:43:50 EDT 2001 | jollyrodger
I'm trying very hard to find any online production manuals. Can anyone point me in the right directions. We have plenty at my place of work, however, they are not allowed to be removed from the factory. The only opportunity that I would have to st
