Electronics Forum | Wed Apr 16 15:22:31 EDT 2008 | jdengler
This looks like it didn't solder the bottom side completely. The recipe for the reflow oven was not right and you did not hit a high enough temp at these locations to get a good solder joint. Then you saw the problem when you soldered the topside.
Electronics Forum | Wed Apr 16 19:11:40 EDT 2008 | lellis
[quote]Just a thought: if nothing else makes sense, you might want to watch the action of the edge-hold chains of the reflow oven, are they moving smoothly and uniformly around the drive gears and idlers?[/quote] As a PM provider and Man. Tech. for
Electronics Forum | Wed May 28 05:49:19 EDT 2008 | aj
Hi all, I would like to know what sort of peak temps people are seeing during reflow - I understand that there are many variables that contribute to this but there should be an average through out all the profiles. We are still seeing issues with d
Electronics Forum | Wed Jun 12 04:20:33 EDT 2019 | SMTA-Pat
Hello All, I would appreciate if anyone could offer some information on the following question. Does anyone have experience changing a reflow environment from high nitrogen concentration (1,000 PPM) to 20,000 PPM or even higher. Were any problems s
Electronics Forum | Mon Jul 12 12:39:39 EDT 1999 | M Cox
| I need some advice concerning reflow of a BGA-292. Since I am not ready to change my entire process to no-clean, I decided to place the lone BGA-292 on a proto run using our BGA re-work station. The pcb is a moderately dense, single-sided, 8-laye
Electronics Forum | Thu Jan 11 22:01:09 EST 2007 | davef
Joe: I know this is not the correct forum to post chip "reworking" questions. Reply: Rework questions are as appropriate as the next topic here on SMTnet J: BGA will not reflow at any normal temperature level. I believe these chips may have been gen
Electronics Forum | Wed Jul 14 14:05:52 EDT 1999 | KT
| I need some advice concerning reflow of a BGA-292. Since I am not ready to change my entire process to no-clean, I decided to place the lone BGA-292 on a proto run using our BGA re-work station. The pcb is a moderately dense, single-sided, 8-laye
Electronics Forum | Tue Feb 11 13:41:54 EST 2003 | Stephen
How are you doing things now? I'm trying to picture a place going from no reflow oven to a reflow oven without also getting a screen printer at the same time. Are you now handsoldering parts on? With these batchs you plan on doing are you going to
Electronics Forum | Tue Feb 11 22:59:33 EST 2003 | davef
As others have stated, there are a few other things in the aveage assembly shop that are much more scary that a reflow oven. For instance, we have a wonderful wave soldering machine and w've been doing that kind of stuff for tens of years, but every
Electronics Forum | Wed Jan 05 11:01:37 EST 2000 | Ron Lahat
I have in design a 400mm x 400mm pcb 3.0 mm thick heavily populated with BGAs 50 mil pitch and want to run a double sided reflow process with overlapping BGAs (CS/PS) 1. can I avoid a selective jig for PS BGAs?(weight calculation ?) 2. Is it possibl
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