Electronics Forum | Tue Nov 28 21:16:17 EST 2006 | davef
J Rose at EMPF says: The introduction of no-clean solder fluxes in electronics manufacturing has given rise to greater levels of solder balling simply because the opportunity to remove them in the wash process does not exist. They are typically cause
Electronics Forum | Thu May 17 07:36:40 EDT 2001 | Bob Willis
Here is a copy of a draft document on PIHR Inspection I have jotted down on a flight to Scotland yesterday, any comments suggestions etc ? I have already most of the photos for the standard but as you know there is nothing in the IPC document it just
Electronics Forum | Sat Oct 15 01:47:09 EDT 2022 | auriga2001
I might need some help to explain what I'm seeing here. The first 3 look like before pictures. They seem ok. The last 3 look like after pictures. It doesn't look like fracturing joints as would be a normal failure for vibration test, more like it rea
Electronics Forum | Fri Jun 08 11:35:16 EDT 2007 | patrickbruneel
80-90% of an average SM component is non wetable (pushing away solder). So if you would use a single smooth lambda wave (massive amount of molten metal) the negative force of the non-wetable part of the component would be so high that the solder wou
Electronics Forum | Tue May 19 12:54:55 EDT 1998 | Richard Jackson
| We had a similar problem. But whenever the solder came from the screen printer the solder would wet to the gold fingers, with the help of residual flux. But the problem is balls, that I assume are not wetted to the gold fingers but instead are jus
Electronics Forum | Mon Sep 22 17:02:58 EDT 2008 | hegemon
You are on the right track Ismir. Essentially however, as the programmer of the machine, I am the one that creates the PCB with the errors to benchmark the settings for the machine. No secret lab though! :-) Easy enough for most any AOI machine to
Electronics Forum | Mon May 18 21:29:38 EDT 1998 | D.Lange
| I've tried every thing I can think of. Do you have any | Ideas? | What I have is micro balls on the gold fingers of | panelize boards. These balls only appear on the gold | finger. Or at least I can only find them on the gold | fingers. | What I
Electronics Forum | Wed Mar 20 16:10:27 EDT 2013 | woodsmt
Most pots have a drain system, but that is a scary thing to use. I have seen places that have plumbed it nicely with ball valves and such to control the flow into small containers, but still fraught with danger. I use small metal bread pans. I lad
Electronics Forum | Fri Mar 23 09:28:46 EST 2001 | PeteC
Well, it's hard to say what it started out as, a smear, splash or ball cause the solder formation on the finger after reflow is spread out ya know. I looked at an archive for possible causes and one was printer operators with paste on their fingers.
Electronics Forum | Tue Apr 18 06:15:49 EDT 2006 | JH
AJ, I have had the Solder Saver on trial a couple of times and reached the same conclusion both times - it is not for us. However there are benifits for some users. In case you dont know how it works, here is a brief explanation; The hand held to
