Electronics Forum: oxidation (Page 1 of 88)

PCB oxidation

Electronics Forum | Thu Jun 09 14:45:21 EDT 2011 | kahrpr

Does the board look like that before Reflow?

PCB oxidation

Electronics Forum | Wed Jun 08 13:49:48 EDT 2011 | sonofptolemy

Hello, I am having a problem with HASL PCB's after it comes back from the stuffer. To me it looks like oxidation and it causes poor wetting. This leads to a bunch of problems all of which have different symptoms but the cause is this oxidation proble

PCB oxidation

Electronics Forum | Fri Jun 17 13:51:21 EDT 2011 | mosborne1

Your problem is at your board house with the finish. There is not enough tin deposited on the ground plane. Could be the current density too low on the ground plane. If electroless they just didn't process these correctly. What is the finish suppose

PCB oxidation

Electronics Forum | Thu Jun 16 17:02:40 EDT 2011 | boardhouse

The finish looks like Immersion Tin or Silver. if its lead free Hot air - could be issue of to high of a Tin Content. find out what brand of Hasl they are using. SL100 Example. Is this tarnished look only being seen after assembly or have you seen


Electronics Forum | Sun Mar 07 09:31:01 EST 2010 | davef

If you could fill-in the blanks, it would be easier to help you. For instance, questions are: * What is is the oxide that you want to understand better? * What would like to do with the oxide? * Where is the oxide located? * What are the results of


Electronics Forum | Mon Nov 17 19:15:24 EST 2003 | Victor

I currently have an inventory of trim caps that have oxidation on the leads. I performed a dip test and am averaging 90% wetting on the leads. On product that has these components already installed is there any risk leaving the parts that have oxid


Electronics Forum | Thu Jul 17 14:18:45 EDT 2003 | davef

What is this oxidation? What does it look like?


Electronics Forum | Sun Mar 07 08:33:37 EST 2010 | joseph_smile


selective soldering/nitrogen

Electronics Forum | Wed Jan 05 13:59:11 EST 2011 | jax

Less Oxygen... Less Oxidation Less Oxidation... Better Solderability

Tin Oxide on Solder Joints

Electronics Forum | Mon Jul 01 16:42:14 EDT 2013 | davef

I consider tin oxide on solder connections to be a process indicator. BR, davef

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