Electronics Forum | Wed Dec 19 17:15:10 EST 2001 | davef
So, what is a �Contaval Pallet�? And who, my I ask, came-up with the cockamamie idea of retrofiting of the edge hold conveyor? Last time I checked, everything was fine, all profiles were working, etc., etc. Just think, if you move the fixed rail i
Electronics Forum | Thu May 23 13:00:51 EDT 2002 | cyber_wolf
One more thing I want to add. Don't turn this into some big deal. Its not atom splitting, or black majic.Bottom line is that you are going to be doing some experiments to prove it to yourself and whomever else requires the data. Profiling is time con
Electronics Forum | Mon May 27 18:51:17 EDT 2002 | harotec
Hi Yngwie Have you got a reflow oven yet. If not, forget about complicated profiling with test runs or reflow trackers. We've got a nice oven with integrated temperature-feedback system. You build any profile you want and the oven will adjust its hea
Electronics Forum | Fri Jun 28 16:21:03 EDT 2002 | russ
Is that 5 top and 5 bottom zones? We use a 4 zone and a 3/4 zone oven for BGAs and have success. I don't believe that the amount of zones is the issue but what type of profile you can get out of them. I will admit that the large ovens are much eas
Electronics Forum | Wed Oct 09 19:08:37 EDT 2002 | russ
AJ, I have bought and used 2 DRS24's in the past. It is a good machine. (I don't think that I will bring up the fact that a certain package that I had kept shorting so I sent them a couple to help with the profile and all of them came back shorted
Electronics Forum | Sat Oct 19 08:14:27 EDT 2002 | johnw
The world of the CM isn't alway's a happy one and the problem is that some one else is alway's paying your wages, that soemone else beign the customer so you really have to do what they say. The board profilign one is a constant one round our place a
Electronics Forum | Wed Jun 25 18:17:48 EDT 2003 | Brian W.
Water soluble pastes generally work best with a ramp-to-spike reflow profile. Check your paste manufacturer's recommended profile. There are many factors that impact your profile; board thickness, component density, buried thermal masses, board si
Electronics Forum | Thu Jan 29 00:10:17 EST 2004 | Vinny
Hi Dave, Thanks for your reply. I have tried getting the design changed from the customer but they cannot provide thermal relief as this changes the RF performance and they cannot afford to do that. As for profile it does reach the reflow tempera
Electronics Forum | Tue Feb 17 17:55:38 EST 2004 | bman
I might be saying something that will get me laughed off of SMTnet forever, but when faced with a similar problem here's what I did. Since I was removing parts I didn't see why I would be concerned about all the things that go on in a good temperatu
Electronics Forum | Thu Mar 04 12:34:48 EST 2004 | cyber_wolf
I know that many smaller companies clean their stencils the same way you do. If you get good results cleaning your stencils this way then I would say stick with the alcohol/wipe method. Take your stencil and put it under a microscope.If the aperture
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