Electronics Forum | Sat Mar 06 20:46:21 EST 1999 | Dean
| | | | | | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | | | | | Concerning the BGA stuff, I'm getting about 60
Electronics Forum | Tue Apr 19 16:20:05 EDT 2016 | davef
Don't blame it on the poor paste thickness requirement [although I might go on to argue that it's could be a contributor to the issue]. Most likely you're the problem. About 70% of the time solder on gold fingers is caused by poor cleaning of screen
Electronics Forum | Wed Mar 20 11:47:06 EST 2002 | Hussman
Ron, Some places want/need oven calibration and some don't, just need a profile. I've worked for both. If you need oven calibration, an easy, inexpensive way is to parallel thermalcouple wire to your existing thermalcouples. Terminate the ends of
Electronics Forum | Fri Oct 08 16:36:59 EDT 1999 | Dave F
| We've recently encountered this problem where one of our .050" pitch BGA's were reflowing at the wave thus causing shorts... The board was profiled with probes stuck to a QFP solder joint, an 0603, and one of the BGA joints. There was an almost 7
Electronics Forum | Mon Jan 04 11:32:59 EST 1999 | Chrys
| Anyone have any experience with ECD's Waverider/MOLE profiling equipment? If so, were they positive experiences? | I use ECD's mole for profiling in the wave and a KIC for profiling in reflow. I like the KIC a whole lot better for a couple of re
Electronics Forum | Mon May 12 17:59:55 EDT 2008 | rgduval
We're currently experiencing a spate of solder not wetting to pads of PCBs, and it's becoming more aggravating on a daily basis. At this point, we're running out of ideas. I've searched the Fine Archives for information, and, so far, haven't found
Electronics Forum | Tue Oct 30 18:43:31 EST 2001 | mparker
My first thought is board warp. This is something you can't see when the board is in a reflow oven. I see it occasionally going through wave solder. You may need a pallet with hold down clamps for reflow. Try putting a bare board in a baking oven at
Electronics Forum | Wed Jul 28 00:13:03 EDT 2004 | NTV
We are seeing un-Reflowed paste along the IC > leads. There is only a very small amount imbedded > in the flux, typically there is about 10 beads > per lead. But on most leads. We are using > no-clean Kester 256 paste (Easy Profile)We have > not
Electronics Forum | Fri Mar 19 08:51:57 EST 1999 | Justin Medernach
| | | After rmoving a BGA (plastic)to correct unexplained shorts | | | I installed another BGA using flux only. | | | Checking on an X Ray machine and found two shorts. | | | | | | can anyone give a good explenation ? | | | | | | Thanks | | | | |
Electronics Forum | Wed May 09 17:26:57 EDT 2001 | davef
Awww, don beso tuff on ursef!!! It sounds like you�re thinking correctly with what you�ve done, but it�s possible that the test you ran did not represent your actual production environment as well as you would have liked. So, you just need to "cran
