Electronics Forum | Fri May 30 11:58:16 EDT 2008 | fredc
The right paper incorrectly applied can be a problem also. I have seen it on even new Fuji nozzles with the illumination disk bunched up on one side of the tube with a gap on the opposite side.
Electronics Forum | Thu Jul 31 23:52:12 EDT 2008 | roc2x
Hi, Im having problem on tombstone, The part is LF chip component 1005, and my solder paste is WS leded. tombstone is not in a deg angle but one side is soldered but the other side is just sitting on the solder. Looks like my solder can not wick up t
Electronics Forum | Thu Jul 31 23:57:11 EDT 2008 | roc2x
Hi, Im having problem on tombstone, The part is LF chip component 1005, and my solder paste is WS leded. tombstone is not in a deg angle but one side is soldered but the other side is just sitting on the solder. Looks like my solder can not wick up t
Electronics Forum | Fri Jul 31 17:09:55 EDT 2009 | isd_jwendell
Don't know about Topaz, but on Essemtec machine using SMC ejector, there are separate solenoid valves for vacuum and release. The connectors are identical and side by side. If these connectors were swapped then I would have the symptoms you describe.
Electronics Forum | Mon Aug 17 19:37:25 EDT 2009 | hegemon
And of course the obvious, you'll want to be running that second side on the rail, and not the belt. Yeah, yeah, too obvious, I know... but don't say no one said so! 'Hege
Electronics Forum | Wed Sep 02 14:25:38 EDT 2009 | esoderberg
I have always gone with blade length equal to board width plus 2 inches - 1 inch either side. Is there any technical reason that I could not use a longer blade, say 2.5 inches on either side?
Electronics Forum | Thu Sep 24 17:36:12 EDT 2009 | davef
Both of the articles talk about pockets cut in the contact side of the stencil that correspond to components [or PTH leads] that would allow PTH first, glue second, and finally second-side SMT placement.
Electronics Forum | Wed Nov 25 09:40:56 EST 2009 | Sean
Hi Greg, The board is with immersion silver finishing..One of my friend had the same issue even with PCB OSP finishing.. Besides, no white residue found on the top side... Its only appear on the bottom side but no so obvious... Rgds, Sean
Electronics Forum | Sat Dec 05 09:17:24 EST 2009 | nagesh
Solder paste & reflow the Bottom side.Use wave solder pallet to isolate the soldered components.
Electronics Forum | Mon May 17 22:46:02 EDT 2010 | qaace
IPC also states that side overhang on a gull wing of 50% is acceptable for Class 2. Does anyone know if that interprets to only one side having a fillet? Also with toe overhang acceptable, there need not be a toe fillet.
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