Electronics Forum | Mon Apr 14 21:43:04 EDT 2008 | joseph_gonzales16
Your problem is process you need to eliminate and there are so many causes to considered. 1.your solder paste 2.your PCB pads 3.your component 4.your profile 5.your printer 6.your placement. you need to isolate all these one of this is your problem.
Electronics Forum | Tue Apr 15 12:14:02 EDT 2008 | lellis
Contaniminates are always a issue. What chemicals do you use? Do you plasma clean? Are the production personnel wereing finger cots to reduce added contaminates?
Electronics Forum | Tue Apr 15 13:08:58 EDT 2008 | abaumann
If the solder had formed an intermetallic then it couldn't have pulled off completely like it did, it's obvious that the boards have a problem with their finish.
Electronics Forum | Wed Apr 16 12:44:43 EDT 2008 | jseagle
What board finish are you using? Is it the same on both boards? Were both boards manufactured at the same plant?
Electronics Forum | Wed Apr 16 15:16:37 EDT 2008 | lellis
Are there any heat sink issues? Re-version of boards with manufacture, miscommunication of boards bieng delivered? Component manufacture defect allowing additional contaminate?
Electronics Forum | Tue Apr 15 06:10:54 EDT 2008 | aj
Try a new batch of Components ? We had a similar problem a while back - it was down to the component. aj...
Electronics Forum | Wed Apr 16 08:24:07 EDT 2008 | davef
Have you: * Checked the solderability of the component through a test such as Dip & Look? * Checked the solderability of the board by pasting and reflowing a bare board? * Checked the quality of the solder paste print prior to component placement? *
Electronics Forum | Thu Apr 17 07:44:59 EDT 2008 | GSx
Check for lead finisching Lead Free finiscing like (e4), in case of AgPd plating you may have similar soldering problems Regards
Electronics Forum | Wed Apr 16 13:29:03 EDT 2008 | vickt
Peter, Everyone's definition of High Mix-Low Volume is somewhat different. The die-hards will say batch sizes 1
Electronics Forum | Wed Apr 23 14:44:50 EDT 2008 | swag
As a user of UIC Advantis with NPI for a couple years now, it kicks butt for low volume high mix. In full production mode it's great for the higher volume builds as well.
