Electronics Forum: plating (Page 6 of 252)

Poor reflow over gold plating

Electronics Forum | Tue Jun 28 10:41:57 EDT 2005 | GS

I am not an expert but just for my understanding: - solder paste used ? NC ? other ? - reflow in Air or N2 ? - temp ramp up before soack (�C/second) ? Tnks GS

Poor reflow over gold plating

Electronics Forum | Tue Jun 28 13:23:56 EDT 2005 | Bob Gilbert

Matt, Try a cooler profile by simply speeding up the conveyor by 10%. The difference may be the temperature the pads are reaching between the HASL boards and the Au boards. Are they the same thickness?

Poor reflow over gold plating

Electronics Forum | Tue Jun 28 17:38:13 EDT 2005 | mdang

We got the same problem. To solve it, we have to tint the pads first and do the normal reflow process. It works but take a lot of time to tint the pads. Any thoughts? Thanks, -Michael

Poor reflow over gold plating

Electronics Forum | Tue Jun 28 18:40:36 EDT 2005 | Bob Gilbert

Matt, Try putting a soldering iron to a pad to see if you get reflow. If it reflows, your oven is too cool. If no reflow, your oven may be too hot. Regards, Bob

Poor reflow over gold plating

Electronics Forum | Wed Jun 29 18:37:41 EDT 2005 | russ

I guess it's it's a good thing that they didn't work out. It might have been interesting when all of the boards failed down the road. I knew I should have asked if it was enig instead of assuming that it was.

Poor reflow over gold plating

Electronics Forum | Fri Jul 08 06:38:51 EDT 2005 | mattkehoe

I did not get that info. We sent them back and the vendor ran them through HASL finish. They processed very well after that. Thanks to everyone for the help. mk

Component Terminals with silver plating

Electronics Forum | Thu Apr 20 17:16:02 EDT 2006 | GS

Silver tarnish on lead could compromise the soldering, mainly in case of No Clean process. Make sure components are correctly packaged and stored. Check the vintage ( Manufacturing Data Code) and in order to avoid them to get old on shelf make sure F

Component Terminals with silver plating

Electronics Forum | Wed Apr 26 10:27:37 EDT 2006 | slaine

weve hand soldered a few components that were tarnished with no problems, also the tarnish is electrically conductive if it helps.

Why gold plating on PCB?

Electronics Forum | Fri Feb 28 10:07:29 EST 2020 | stephendo

Flatness is only half of the advantage. Gold doesn't corrode. There are other flat surfaces but do not last as long as gold.

Need plating on ceramic boards.

Electronics Forum | Tue Aug 31 12:42:45 EDT 1999 | Charles Barker

****************************************** ***************** HELP! *************** ****************************************** We are having a special ceramic smt board made. The boards are 16-up arrays that have smt pads on both sides. Only thre


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