Electronics Forum | Wed Feb 29 16:18:22 EST 2012 | jorge_quijano
Hello guys, I have an issue and I hope you can share some comments; I'm in a High mix low volume enviroment, as result I have several PCBs "stored" in carts, what is the best method to clean it? they have a lot of dust, I think ionized air gun will w
Electronics Forum | Tue Jul 18 19:20:25 EDT 2006 | sharifudin
Actually we run lead free solder paste and the profile spec very tigh.I can't use capton tape due my product in panel form and save cost.I already verify conveyor,machine and tool free from dust and solder paste but the problem still remain.
Electronics Forum | Sat Mar 14 15:48:40 EDT 2015 | horchak
The white haze is definitely an indication of moisture being trapped in uncured or improperly applied solder mask. You can verify this by heating up the board using a heat gun on an area of the board with the white haze, and if it clears up that is t
Electronics Forum | Mon Mar 05 11:32:34 EST 2012 | davef
As long as you're convinced that your ionized air gun is not a static generator, it should work fine in dedusting your boards. As you say, covering your board racks while the boards are being stored is probably a better solution. If you google 'esd
Electronics Forum | Sun Dec 17 22:23:46 EST 2017 | jmelson
Well, I fixed it. I had resisted taking the motor off because of the recalibrations that would be required. But, it got bad enough I had to. Under the microscope, I could see copper dust packed between the commutator segments. I removed that, and
Electronics Forum | Mon Nov 26 20:15:50 EST 2001 | davef
Sounds like you are thinking correctly. I'd guess your fab has gotten "smart" and changed your bare board, as you suggest. So, you've got two choices: 1 Rework the QFP. 2 Remove the lower temperature PTH components and solder them to the board some
Electronics Forum | Thu Dec 14 23:21:12 EST 2017 | jmelson
OK, I think you are right! The one brush I can get to looks fine, the other one is on the back, and there's no way to get to it without removing the motor. Even the front brush was VERY hard to get back in. But, there are rubber plugs that allow y
Electronics Forum | Fri Jun 14 02:13:11 EDT 2002 | john_wsme
Ross, Thanks for your advice. I will take a look at FAB warp and check the pad size. If you also have any suggestions on rework BGA profile, please share some information which is a great help for us. The best regards, John Need help from everybod
Electronics Forum | Mon Feb 02 11:52:07 EST 2009 | pjc
Is anybody using H2O washable solder mask that comes on the PWBs you get from the fab vendor? I am researching PWB vendors that can provide this service. Thanks.
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