Electronics Forum | Tue Dec 23 14:45:06 EST 2008 | comatose
One thing that helps is to divide large pads into a series of smaller pads. This prevents the scooping you're talking about.
Electronics Forum | Wed Jan 07 00:18:14 EST 2009 | milanrit
Recently on one of my assemblies(sn/pb) I started seeing leaded BGA failure at functinal test for opens, but when I inspected them through 5DX and ERSA Scope it doesnt seem like there is any opens or insufficient and half no. of boards passed functio
Electronics Forum | Thu Feb 05 01:53:47 EST 2009 | thirdeyeny
I am a skilled smt operator that pays close attention to detail with my experience in the electronic field for the passed 10 years i proved to be an asset to all companies that i have worked for in providing quality work and ensuring on time delivery
Electronics Forum | Tue Mar 31 19:50:22 EDT 2009 | davef
8 bar is over 100 psi. What are you using that much pressure? So, your piping is made of what material? * Black iron * Copper Can you run soft pressure piping to by-pass the section that requires sealing?
Electronics Forum | Mon Jul 13 18:04:08 EDT 2009 | padawanlinuxero
I have put them thru the reflow just the switches and theres no problem even then I put them back on tape and reel and again to the reflow and test them again and they all pass
Electronics Forum | Mon Oct 05 06:08:02 EDT 2009 | pengliang
hello, I'm Pengliang,from China job in ASUS computer and working with smt process department.(so I hope to dicuss the process issue analyse and improvement) any issue pls. pass out . msn iD: liang.pung@hotmail.com good luck
Electronics Forum | Sat Oct 17 18:43:56 EDT 2009 | emanuel
Just a moment.... when the machine was installed I was told to use a dry air line, so it is connected to a line that passes through an air dryer and no oiling at all. Should it have oiler installed? I will check the installation manuals
Electronics Forum | Fri Mar 19 14:58:42 EDT 2010 | davef
We can't let this thread pass-by without trying to learn more about these 'coins.' What's the deal? * Are they like currency, money? * Are they coin-shaped metal slugs? * Why are they on a circuit board? What's their purpose? * Can you attach a pict
Electronics Forum | Thu Jul 08 02:32:47 EDT 2010 | tivux
I soldered a wire in the tape press lever of th feeder, so as to create a small gap where the cover tape passes and the component doesn't: in this way the component is pushed down in the pocket as soon as it tries to follow the cover tape. regards,
Electronics Forum | Wed Jul 21 11:12:05 EDT 2010 | remullis
I have some 13" long boards that warp considerably during first pass through reflow (no center support), what I've done to improve this type of warpage is stiffeners along the front and back edge. This may help with twisted boards as well.
