Electronics Forum | Wed Mar 06 11:02:07 EST 2002 | slthomas
I worked for a medical instrument manufacturer a few years ago and we had to calibrate all measurement devices. That included everything from our vapor phase oven's thermocouples to 6 inch steel rulers. I don't see any logical justification if you'
Electronics Forum | Wed May 29 17:17:49 EDT 2002 | wilcoxito
As far as aperture dimensions go, I found a technical note written by Micron that recommends using "square apertures with sides equal in length to the diameter of the PCB pad. The corners of the square should also be slightly rounded, and the apertu
Electronics Forum | Wed Jun 26 21:56:24 EDT 2002 | ianchan
Hi mate, there is another thread ongoing about such an BGA vs oven length issue, suggest posting your question there. As for that someone's opinion, he/she is entitled to it. Then again how did that someone determine this level of "insufficient"?
Electronics Forum | Wed Jul 03 07:45:22 EDT 2002 | Yannick
Hello, We have some probleme here with our solder joints, I read a lot about what sould I do before pass a board in the oven, what should I consider to make my profile and there is one thing I can't find is how to calculate the thermal mass of my
Electronics Forum | Wed Nov 06 17:50:46 EST 2002 | davef
I hear you on the profiling issue. That won't get at the issue any how. Your observation of solder wetting confirms that solderability is NOT the issue. You may be seeing a "cold solder connection". The issue is the TCE of the different materia
Electronics Forum | Tue Jan 21 11:11:07 EST 2003 | slthomas
OK, so the issue is with the variability of the alloys on the soldering surfaces and the subsequent variability of reflow temps. Sounds reasonable (actually obvious, now that I think about it), especially on the component side. We only use HASL fin
Electronics Forum | Mon Jun 16 13:57:48 EDT 2003 | James
Could anyone give me a basic profile temperature settings for a conceptronics 7 zone oven and speed? I have the first couple of zones ramped up to get to the soak temperatures. Is this correct or should I start out with low temperatures and graduall
Electronics Forum | Sat Jul 05 00:22:26 EDT 2003 | caldon
We typicaly have 6 basic ones we work from. We can not have one as some of our boards are simple smt to Large ground plains to rf shielding. We also monitor board color and component types...Obviously BGA's are treated a lil different. Some boards ne
Electronics Forum | Thu Jul 10 15:00:58 EDT 2003 | russ
Louis, For whatever it is worth, When I have $5000 parts I don't even mess around with a rework station. I would mask off any heat sensitive components (We use water soluble masking like that for wave soldering) and then process through the oven yo
Electronics Forum | Tue Jan 13 21:00:15 EST 2004 | davef
This sounds like something the saleman of your new Vitronics oven should be happy to help you sort through. ECD [and probably other profiler supplers] provide software for playing with [optimizing?] recipes. In it, they allow you to select from a v
