Electronics Forum | Fri May 29 08:25:13 EDT 2009 | floydf
We are getting what looks like cold solder joints on one of our boards. The boards have an aluminum substrate, and use OSP plating. The solder is lead free - 96.5 Sn, 3.0 Ag, .5 Cu. The flux is no clean. When we first had the problem, my solder profi
Electronics Forum | Fri Apr 29 08:39:01 EDT 2005 | davef
Few solder paste suppliers recommend freezing solder paste. Check with your supplier for recommendations. Examples are: * In many cases, nothing happens. However, some pastes are susceptible to damage that impairs paste performance. As a consequenc
Electronics Forum | Wed Jan 14 00:02:10 EST 1998 | jerry
I have a problem! The solder on my pc boards look great comeing out of my reflow oven. They go thrue the rest of the prossese and at the end at the qc station it's cold or whitish or gray not shiny. does any one have a idea on how to correct this pro
Electronics Forum | Tue Jan 13 23:55:35 EST 1998 | jerry
I have a problem! The solder on my pc boards look great comeing out of my reflow oven. They go thrue the rest of the prossese and at the end at the qc station it's cold or whitish or gray not shiny. does any one have a idea on how to correct this pro
Electronics Forum | Fri Apr 29 07:14:13 EDT 2005 | jdumont
Recently we have been seeing issues with an inability to print through .45mil apertures on our stencils. We have also been seeing a alot of solder balls under some BGAs (some worse than others). I was checking the refridgerator (small mini fridge) we
Electronics Forum | Wed Jan 14 08:16:13 EST 1998 | Allison
I gleen from your post that this assembly is mixed technology. You may have a compatibility problem between the flux in your wave solder machine and the flux in your solder paste. Check with the manufacturer of each and see if they interact. | I ha
Electronics Forum | Thu Jan 15 15:15:25 EST 1998 | justin
| I gleen from your post that this assembly is mixed technology. You may have a compatibility problem between the flux in your wave solder machine and the flux in your solder paste. Check with the manufacturer of each and see if they interact. | |
Electronics Forum | Fri Jan 16 23:46:38 EST 1998 | Scott
| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct
Electronics Forum | Wed Jan 14 18:47:55 EST 1998 | Graham Naisbitt
Jerry This is the classic "White powder phenomenon" a little like the X files - loads of information but who do you trust? I know that GEC Hirst Research in the UK, identified over 16 different white powder residues so it is not an easy subject. Plea
Electronics Forum | Wed Apr 21 22:15:12 EDT 1999 | Chris
| I'm having problems with trying to get a good solder joint using a Ceramic PCB. We are using AMTECH hi-temp solder (ws-486 96.5/3.5ag). My profile looks great and I used the recommended profile from Amtech with a few adjustments. My max temp is abo
