Electronics Forum | Thu Mar 01 06:12:06 EST 2007 | KArl
How do flux aggregate solder related problems
Electronics Forum | Mon Mar 05 22:52:48 EST 2007 | davef
Please give additional context to the area that you want to discuss
Electronics Forum | Mon Apr 09 14:53:19 EDT 2007 | flipit
Hi, We were running with few defects with lead solder paste. The lead solder paste with stencil 0.010" X 0.020" and 0.004" thick stencil produced near defect free PCB assys. 0.010" X 0.020" (0.004" thick) lead = defect free 0.010" X 0.020" (0.005"
Electronics Forum | Mon Dec 17 21:11:13 EST 2007 | davef
Thanks bud. Merry Christmas and happy holidays to all.
Electronics Forum | Wed Mar 12 13:41:23 EDT 2008 | swag
We have a lead free assembly with a 128-Pin PQFP with 20 mil pitch leads. We have tried stencil aperture reductions, step-down stencils, different thickness stencils, various printer setting changes, placement pressure changes, nozzle changes, moved
Electronics Forum | Wed Mar 12 14:14:28 EDT 2008 | realchunks
Check your board for solder resist between the pads. Without it, you get shorts very easily.
Electronics Forum | Fri Mar 14 08:38:15 EDT 2008 | davef
Pastes from different suppliers have different hot slump characteristics
Electronics Forum | Fri Mar 28 12:39:20 EDT 2008 | smtnet51
Sounds like a love connection.....
Electronics Forum | Tue Apr 01 18:57:52 EDT 2008 | swag
Yes we have a 3D, in-line paste inspection system.
Electronics Forum | Mon Aug 23 13:59:18 EDT 2010 | swag
Under a scope, make sure the PCB has soldermask between pads.
