Electronics Forum | Fri Feb 20 12:55:43 EST 2004 | russ
Ah, the old contour wave. I don't really know how to adjust those to get correct backflow to reduce your solder volume. I need to ask why you are worried about this. Do you have a QC requirement in excess of IPC class3 wich allows for this joint t
Electronics Forum | Tue Mar 09 12:13:27 EST 2004 | Gabriele
I want just to confirm what Dave suggested you. J-STD-033a, par 6. Boards Rework tells you plenty of useful informations. 6.1 Component removal, RWK and remount 6.1.1 Removal for Failure Analysi 6.1.2 Removal & Remount 6.2 Baking of Populated Boar
Electronics Forum | Sun Jan 14 12:42:35 EST 2007 | SMTRework
I think the main cause of this condition is #3 because both #1 and #2 never change from board to board, these are identical boards with identical BGA revisions. These BGA's (as stated before) are about 3 years old.. I don't believe they are lead free
Electronics Forum | Tue Feb 24 13:22:10 EST 2009 | pcbrookie
Hi All, Pretty new here, and to the industry and doing my best to learn what I can. Sorry if this topic has been discussed extensively, but I couldn't seem to find it via a forum search. Our company recently purchased a 7-zone reflow oven to repla
Electronics Forum | Fri Mar 26 09:00:19 EDT 2010 | krish_bala
Thank you Graham for the response. The particular BGA that we currently Bake is a Level 3 BGA, which means the BGA will expire in 7 days after removal. We are currently baking the BGAs once a week for the problem described above. These devices are u
Electronics Forum | Fri Sep 09 21:09:20 EDT 2011 | hegemon
Wow, a lot of questions here...and you are definitely doing some "tough sledding". To the point. If you have 3 - 22" zones you'll have to calc your belt speed and temperatures to match the solder paste requirements with regard to flux activation an
Electronics Forum | Thu Jun 17 20:35:51 EDT 1999 | Earl Moon
| | | Does anyone know where I can find a list of things to do to when troubleshooting issues during the wave solder process? | | | | | | for example: | | | | | | Solder Bridge | | | 1.verify amount of flux been aplied. | | | 2.verify turbulance on
Electronics Forum | Fri May 14 14:52:56 EDT 1999 | Ryan Jennens
| | | | I am looking for anyone who has converted over to VOC Free flux. I need some info on any problems, etc. that you might have had. | | | | | | | | Please E-mail me at wes.ruggles@vickers-systems.com or call at (513) 494-5229 | | | | | | | | T
Electronics Forum | Tue Nov 01 15:26:43 EST 2005 | GS
Is it this your first experience of C-CGA RWK ? In order to approach a RWK of this kind of pakage it requires a capable process and clear operating procedure. In the past, the company who I use to work for, we rwkd plenty of this kind of CCGA. Earl
Electronics Forum | Tue Jul 27 14:56:23 EDT 1999 | John Thorup
| | | | We are currently using a 65/35 solder for our wave process but are considering switching to a 63/37 for a substantial cost savings. No one here seems to know why we everused a 65/35 formulation in the first place. | | | | I understand 63/37 t
