Electronics Forum | Fri Jan 18 12:05:47 EST 2019 | SMTA-Timothy
It's unlikely to be a reliability issue. It looks like tin oxide. Nothing to be too concerned about. Otherwise your process controls sound robust.
Electronics Forum | Tue May 21 15:16:16 EDT 2019 | emeto
Voiding usually is caused by oxidation/impurities on the plating of part and or PCB. I know it is gold, but did you run any analysis for cleanliness of part plating? Couple of pictures will help everyone.
Electronics Forum | Fri Jun 26 14:08:49 EDT 2020 | indhu
Hi, I am having a issue that SMT nut drop after reflow. The solder height all in specifications. Had tried adding flux inand the solder paste. But shows no improvement. Is the nut easily oxidize? Can anyone help me on this?
Electronics Forum | Tue Apr 27 07:50:09 EDT 2021 | jeremy_leaf
@KWalker I think that could be the case. Though I read somewhere a while back that nickel oxidation can be quite tough to remove, even with flux. Am I wrong about that?
Electronics Forum | Tue Apr 27 21:22:57 EDT 2021 | kwalker
The fact that your cleaning didn't really help reinforces that it probably is oxidation. Cleaning won't remove that.
Electronics Forum | Fri Sep 03 17:39:06 EDT 2021 | stephendo
The most common issue with baking parts for removing moisture too much, is oxidation of the leads. But I haven't seen that too much. I'm really curious what moisture magnets are and how they work.
Electronics Forum | Wed Sep 22 15:03:46 EDT 2021 | emeto
Excessive baking can actually lead to oxidation and create solderability issues. Why would you profile with empty board? But even if you do that, better use solder sample board.
Electronics Forum | Thu Oct 14 16:38:29 EDT 2021 | SMTA-64387687
OSP is there to keep the copper from oxidizing. Once you wash the board, the copper is exposed. So, you have to either use it right away, or store it in a non-oxygen environment (vacuum/nitrogen).
Electronics Forum | Wed May 11 20:38:18 EDT 2022 | donovan03608
The leads on the FPC are pre-tinned on both sides with SAC305. The receiving leads are AU. We do not experience any wetting issues that would suggest oxidation.
Electronics Forum | Wed May 11 20:43:42 EDT 2022 | donovan03608
The leads on the FPC are pre-tinned on both sides with SAC305. The receiving leads are AU. We do not experience any wetting issues that would suggest oxidation.
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