Electronics Forum: shiny solder joint (Page 1 of 301)

Wrinkle finished on solder joint

Electronics Forum | Thu Oct 25 04:52:17 EDT 2001 | Vai

I'm running intrusive reflow. What happened was when the board went thru' the first reflow ( which is secondary side ), at Post reflow, I can see the solder joint quality is very good smooth and shiny. But when we proceed with the 2nd reflow, at Post

Solder joint issue

Electronics Forum | Wed May 17 12:31:54 EDT 2006 | Mark

Hi , It looks like there is solder (shiny like mirror surface). Defently not black and not gold. Regards Mark

facing cold joint problem

Electronics Forum | Mon Jan 19 14:54:38 EST 2004 | cyber_wolf

How did you come to the conclusion that you are having a cold joint problem. Just by appearance ? As Dave stated if you have any of the metals that he listed in the joints they will appear to be dull and grainy sometimes. But... Dave, I will have t

solder joint problem

Electronics Forum | Fri Jul 26 08:25:25 EDT 2013 | emeto

If there is a way to pre-tin the parts, that might help in forming better joint with gold.

solder joint appearance

Electronics Forum | Thu Jul 29 21:11:13 EDT 2004 | davef

Could be lots of things. With limited information about temperatures, solder alloy, and cleaning; we'll swing for the fence that you got these solder connections very hot. So hot that Pb oxide is dominating the solder joint surface instead of the

SMD solder joint calculation

Electronics Forum | Terry Burnette |

Wed Jan 16 15:21:48 EST 2002

solder joint problem

Electronics Forum | Fri Jul 26 05:14:38 EDT 2013 | anilw2006

We had a solder joint problem in gold plated PLCC68 ic. We do double sided reflow process with Cookson OL107F paste. First we do top with paste and second with glue process.The solder joint shape and wetting looked normal.In the process of testing

Reliability of solder joint

Electronics Forum | Thu May 26 21:09:01 EDT 2005 | thaqalain

The reliability of a Gullwing component solder joint is in question when insufficient solder is evident: *at the heel of the lead *at the toe of the lead *none of the above

SMD solder joint calculation

Electronics Forum | Wed Jan 16 11:20:52 EST 2002 | bentzen

Hi... We tend to do a lot of footprint calculating for new SMD components. But what about the amount of solder paste on the solder pads. The amount of solder alloy is of cause determined by the stencil aperture size, stencil thickness and the sold

SMD solder joint calculation

Electronics Forum | Wed Jan 16 12:04:45 EST 2002 | dason_c

You can use the IPC-7525, Stencil Design Guidelines for start up.

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