Electronics Forum | Mon Jan 15 16:14:15 EST 2007 | leemeyer
This is a used oven, new to us. No product has been setup on it yet. We were establishing som baseline profiles and noticed that the actual profile read didn't even come close to our optimal profile. Further investigation proved that the belt was to
Electronics Forum | Fri Feb 23 15:14:51 EST 2007 | James
I have this board that we are currently having problems with. When we run the BGA side with the hotter temp. the connectors on the other side lift off their pads. The BGA is lead free, that is why we have to use the hotter profile. Would it be
Electronics Forum | Thu Mar 15 12:33:50 EDT 2007 | ck_the_flip
To do a profile at most companies, if you don't have a scrap board handy, you'll use the already-soldered board that's already been through ONE reflow cycle. You spend time attaching T/C's with the aluminum tape - after all, the prep-work is half th
Electronics Forum | Wed Apr 11 14:57:31 EDT 2007 | itwasbill
Hi all! We are placing BGA's using a QSV-1 pck and place machine. I believe our profile has the correct information but we continue to get vision results not available when we inspect the part. Our screen appears as follows: NO RESULTS AVAILABLE PAR
Electronics Forum | Fri Jun 29 09:51:27 EDT 2007 | bjrap3
I have never had a problem with any other BGA's that I reworked. I recently found out that the BGA that we are trying to rework is made poorly and warps automatically from the heat. There is nothing that we could do to prevent this. Also the board
Electronics Forum | Wed Sep 05 07:07:25 EDT 2007 | mun4o
hi, I have a big problem with soldering uP QFP144 package.All components in PCB are small, only this chip is big and I can't make good temperature profile.Solder joints of other components are shining and with good wetting, but in QFP leads solder j
Electronics Forum | Tue Oct 16 06:41:22 EDT 2007 | aj
Hi All, I understand that reflow Profiles are Product dependant but I would like to compare my profiles to what others are doing. Any input is greatly appreciated. I have a 5 zone Oven + 2 cooling Zones. ( Leadfree) If I could get some answers to
Electronics Forum | Fri Nov 09 01:41:04 EST 2007 | reypal
Thank You Guys for all your input. The reason I raised this case that it was our customer challenge us on the physical outlook of the profile board rather than its functionality no matter the profile curves looks good. Yes, we have a procedure to de
Electronics Forum | Fri Dec 21 10:12:46 EST 2007 | ck_the_flip
Operator, Think "opposite". You actually want to MINIMIZE the ramp-up rate. Think about 2 - 3�C per second as your upper limit for ramp up. You don't want to go more than 4�C per second for thermal shock reasons. All of this, of course, depends
Electronics Forum | Tue Jan 29 11:14:47 EST 2008 | wayne123
I agree with Idumont.....KIC works great for me, it has 9 inputs, and is pretty good at predicting the direction that you may need to tweak your profile, the only thing is I think that these untis ( slim kic 2000) are fairly spendy. not sure though,
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