Electronics Forum | Tue Dec 20 20:00:01 EST 2011 | rspoerri
We don’t do it often, but on a test failure, when the cost of a BGA relative to our confidence that we might have a questionable joint is high, we will flux it with a low solids no-clean flux and reflow it again. We don’t do it often enough, and d
Electronics Forum | Wed Dec 21 17:11:58 EST 2011 | davef
Kim: We understand what you're saying. For us, fluxing the BGA and activating the flux are the issues. * If you're squirting liquid flux under the BGA with a plastic bottle with a needle tip on it and then reflowing less than the whole board with a
Electronics Forum | Sat Dec 24 19:39:43 EST 2011 | dontfeedphils
I've reflowed many different size BGA's in an effort to better the connection and to help the board pass functional test. Using a middle of the road liquid flux and a convection spot rework machine and almost every time I would reflow a failed board
Electronics Forum | Thu Dec 22 06:46:01 EST 2011 | rameshraja
Dear All, We are doing PCBA's manufacturing,Inprocess we are doing manual soldering, reflow and wave soldering process, As per ISO-7.5.2 Process validation ( Special process ) Soldering process is considered as an special process, hence in order to
Electronics Forum | Sat Jul 13 09:56:45 EDT 2013 | davef
Look here for guidelines http://www.sensata.com/supplier/pdf/CQI-17_Soldering_System_Assessment.pdf Special processes" refer to processes that produce outputs whose output cannot be verified before being released to the customer. These products and
Electronics Forum | Thu Dec 29 15:07:11 EST 2011 | cbeneat
My Company has 3 XPM2 Vitronics reflow ovens, one new in 06, one new in 08 and one new in 10. They have all been relatively trouble free over the last 6 years, however recently I'm seeing a white powdery substance on my filters, for the two oldest(s
Electronics Forum | Tue Jan 03 11:01:19 EST 2012 | julie331975
We are working with .065" thick metal core PCB's. I have a couple boards that are in need of rework. The components we are placing are similar to a SOJ package with a solder pad underneath the component. We are also using a lead free process. I have
Electronics Forum | Thu Jan 05 15:53:07 EST 2012 | davef
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Electronics Forum | Tue Jan 03 21:23:06 EST 2012 | atpico
I’ve got a MPI M500 pick and place and I want to get the best out of it. I started to restore it with fair results. What is the story of this company MPI M&M Products Inc? Are still there lost or old stock components and shops which will maintain the
Electronics Forum | Thu Jan 12 17:42:55 EST 2012 | warwolf
yeah we are getting quotes on a new solder pot, we have used that paint we tested a small sample of it with solder and it seems to be ok, we are doing a full solder alloy change in about two months so we will have a chance to inspect the solder pot a
