Electronics Forum | Mon Aug 07 09:58:41 EDT 2006 | nodlac
Davef's link is a great one. Mine pales but may be helpful... - This one is from Georgia Tech on Yield... http://www.cbar.gatech.edu/about/publications/Analysis%20of%20Factors%20that%20Affect%20Yield%20in%20SMT%20Assembly.pdf - http://www.cbar.marc
Electronics Forum | Wed Apr 23 03:19:30 EDT 2008 | jkhiew
Hi all, Can anyone advise me what is the recommended floor life for pcb assembly prior to wave soldering before drying/degassing ? Thks Joseph
Electronics Forum | Wed Apr 23 07:27:21 EDT 2008 | realchunks
Floor life of a PCB is rated in years. Are you asking about the solder paste or something else?
Electronics Forum | Fri Apr 25 04:44:56 EDT 2008 | jkhiew
Hi all, I mean after post adhesive oven curing (SMD at bottom side) prior to manual insert of PTH components (top side), what is the recommended storage time prior to wave soldering in order to avoid pin/blow holes and sunken joints issues (pcb asse
Electronics Forum | Mon Jun 05 14:09:36 EDT 2000 | Jason
We would like to gauge or precentage of production line failures to industry standard AQL level. What would be an acceptale AQL level for assembled pcb's or finished units leaving the factory?
Electronics Forum | Wed Apr 23 17:28:46 EDT 2008 | davef
The need to prebake boards to remove moisture from the board [to prevent voiding] prior to wave soldering is driven by the thickness of through hole plating. * 1 thou [25um] or greater requires no prebaking * LT 1 thou [25um] requires prebaking
Electronics Forum | Thu Apr 19 15:55:09 EDT 2012 | georgeg
Has anybody tried bittele for pcb fab and assy? Their quotes were not bad but I just wanna know about their service/material quality. Myro prices seem almost the same as these guys but I don't know which one to choose. Has anyone tried these companie
Electronics Forum | Thu Oct 23 23:38:48 EDT 2008 | pathakvj
We have 8 layer HASL PCB. We saw molten solder blobs / balls on op side of assembled PCB. (to check, if this was a bare board problem), We passed bare board as received thru, SMT reflow oven and saw solder balls on top side of board. What could be th
Electronics Forum | Wed Apr 23 19:00:39 EDT 2008 | stevek
It depends on the laminate but a PWB is like any other MSL component. Some fab shops are only waranting standard FR4 laminates for 45-60 days when processed at lead free temperatures. The best thing I can say is to try some weight gain/loss experim
Electronics Forum | Tue Sep 05 16:02:18 EDT 2000 | Dave F
Wussamatta with PC Fab? Other than PC Fab, try: � SMTnet Industry Directory lists 250 (or so) fabricators � Printed Wiring Board Resource Center, Printed Wiring Board Facility Directory (http://www.pwbrc.org) has a huge shop listing by US state � As
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