Electronics Forum | Fri May 02 08:44:36 EDT 2008 | realchunks
Sure you can. But I don't have the time, money or resourses to do this. I do not have the luxery of only getting SnPb parts. Wish I did, but I don't. As for temp specs, I know the specs on all my parts. We profile our ovens every month. We can
Electronics Forum | Mon Jun 16 12:06:52 EDT 2008 | realchunks
Seen this with our old board house. The uncured board is causing your problem. Hard to catch, but looks like you have all your ducks in a row. We presented the exact same thing to our board house, and naturally they blamed our process, handling, a
Electronics Forum | Fri May 23 16:38:28 EDT 2008 | wayne123
Well if you are getting bridges under, one thing that we used to do was flood the part with flux and then run it back through the reflow. Keep in mind we were not a High reliability manufacturer. This practice didn't hurt OUR boards, and most of the
Electronics Forum | Thu Jul 24 21:20:58 EDT 2008 | srt
Hi, Now we also facing voiding issue after rework .But this only happen to 1 BGA from diffrent PCBA.We also already change 3 type solder paste and fine tune the profile follow solder paste spec but problem intermitten happen again.Pls help to advic
Electronics Forum | Mon Aug 25 08:26:33 EDT 2008 | scottp
We've gone through this a couple times. Once it was because the device was warping in reflow. We confirmed with shadow moire that the corners were lifting up. The supplier fixed some things in their molding process to reduce the warpage. Another
Electronics Forum | Tue Oct 07 09:40:44 EDT 2008 | john_smith
Dear, Flexkhushi Do you mean 2 mm thick board or .2 mm board. If you are talking .2mm then you are refering to a flex circuit correct? What equipment will you be using to place the 01005 component? I
Electronics Forum | Sun Oct 19 15:02:10 EDT 2008 | Jdt13
We are having some issues with a RF PCB aprox 1" x 1". The pads are in the bottom of the PCB and it goes on the Top side of the mother board the pads of the RF board are like a BGA (square pads)and we have troubles to make the proper welding in the
Electronics Forum | Fri Jan 16 14:42:44 EST 2009 | realchunks
Kester R562 is a 63/37 paste. Not ideal for no-lead parts. I bet you are seeing no-lead BGAs and they will become very weak using your old proile and paste (been there - done that). You can try a hotter profile but will probably just burn off your
Electronics Forum | Fri Mar 13 16:38:57 EDT 2009 | hegemon
'Hege is checking in for the DRS25 by Air Vac. Forced Air Convection reflow, and huge heating capacity for bottom side, ensuring minimum Delta T across the PCB during the process. Have 3 of these machines constantly in use for the last 2 and a half
Electronics Forum | Mon Apr 06 11:46:10 EDT 2009 | c111
I agree the longer soak will help provided you are not applying to much heat/time to the board now. -are the pads that lift connected to anything? This has happened to me in the past where un-connected pads would come of far easier than those connec
A US manufacturer of quality hand tools for those engaged in the repair, rework, R & D, testing, and assembly of electronic components and printed circuit boards from Through Hole to 2Mil Pitch Surface Mount.
98 Elm St.
Portland, ME USA
Phone: 1-207-775-6139
