Electronics Forum | Thu Oct 28 09:52:39 EDT 2010 | dyoungquist
Try rotating your board 90 degrees when running it through your oven. Will probably solve the tombstoning issue on that cap but might cause tombstoning elsewhere.
Electronics Forum | Thu Oct 28 16:15:24 EDT 2010 | duchoang
If everything else is OK, capacitors quality could be the cause of this issue. Some caps could have been contaminated or the metal mass not even between two ends. Try different kind (manufacturer)of cap.
Electronics Forum | Fri Oct 29 07:10:40 EDT 2010 | scottp
I agree with DucHoang. If your board and reflow profile have not changed then I would suspect incoming parts. We've seen tombstones when a chip supplier had plating problems.
Electronics Forum | Sun Oct 31 11:07:09 EDT 2010 | Mark
http://www.shanelo.co.za/Article%20to%20assist%20with%20Stencil%20Design%20Guidelines.htm Stencil design
Electronics Forum | Tue Nov 30 07:53:16 EST 2010 | edmaya33
could be a printer or stencil issue. try to check your printing repeatability. Suggest to use SPI for a checking paste volume/height/area.A regular stencil cleaning may reduced your headache.
Electronics Forum | Fri Oct 29 23:08:06 EDT 2010 | laen
What software are people using to compute route and retain tabs on panels? I produce some complicated (150 board, 80+ different design) panels, and I haven't found a good way to programmatically compute where to place the tabs. Thanks.
Electronics Forum | Tue Nov 02 03:24:33 EDT 2010 | Jacki
Yes, we use solder paste,solder bar and solder wire from different manufactureres for 1PCB assembly. And, what JAX said, we never mixed solder paste from different manufactures and used.
Electronics Forum | Tue Nov 02 07:42:30 EDT 2010 | jdengler
Will the flux residue from solder paste A come into contact with flux from solder paste B? If so you better do some tests. There is always a possibility of a bad reaction between 2 fluxes. You need to test to make sure. Jerry
Electronics Forum | Thu Nov 11 14:56:22 EST 2010 | davef
We don't know, there are lots of different conformal coating materials and staking materials. Not all combinations behave similarly. Our choice would be to epoxy the component to the board, then conformal coat.
Electronics Forum | Fri Nov 12 04:48:02 EST 2010 | raghu
thanks for your reply sir, for conformal coating Humiseal 1B31, what are the preferable staking materials? please suggest us..
