Electronics Forum | Wed Apr 21 17:08:32 EDT 2004 | dave
Congratulations on your new customer. This could be a keeper. Here's what you're familiar with: Electroless Nickel - per MIL-C-26074 and ASTM-B733. Electroless nickel describes the plating of nickel deposits, which may contain phosphorus and boro
Electronics Forum | Mon Oct 20 15:41:19 EDT 2008 | patrickbruneel
Josh, You can not check the bare boards for black pad unless you remove the gold plating. Like Robin said black pad is nickel oxidation/corrosion and a result from bad electroless nickel plating bath control. The only preventative action you take is
Electronics Forum | Mon Jan 29 12:42:24 EST 2001 | davef
Several points about your query are: * TI�s solderability protection specification is a minimum of 3 u" of palladium over 40-60 u" of nickel plate over a http://www.ti.com/sc/docs/products/logic/package/palladm/index.htm
Electronics Forum | Thu Apr 27 04:21:15 EDT 2006 | slaine
you can either use an alloy that has a higher copper content to reduce dissolution or the better option is to have a Nickel plating barrier. both have there problems. Bu remember the dissolution of copper by tin carries on at a slower rate a ambiant
Electronics Forum | Fri Jan 15 07:23:14 EST 2021 | denism
Also, solder splashes can be due to contamination, for example, on the terminals of components. In the past, had a problem with solder splashes on a seemingly standard SMD component. The reason was the incorrect nickel plating process of the componen
Electronics Forum | Fri Jun 19 14:25:24 EDT 1998 | Earl Moon
| | Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. | | Mike | There has b
Electronics Forum | Fri May 13 14:08:39 EDT 2011 | eezday
This appears to be black-pad and is often the result of using specs that call for gold plating that is too thick. The black pad is corrosion that is created between the gold and electroless nickel during the gold plating process. This is counter in
Electronics Forum | Thu Oct 20 12:50:11 EDT 2005 | bobl
I used to collect mine in a 50 gal drum and take them to the scrap dealer. If he classifies it as brass or copper you can get a good return. Most leads are nickel and tin plated brass. Most dealers stick a magnet on it and tell you its not worth much
Electronics Forum | Thu Sep 02 09:51:53 EDT 2004 | davef
We see latches from some suppliers that just are not solderable. Usually the nickel plate on the latch is poor, allowing the nickel to corrode, and requiring a more active flux [if you're lucky]. But lots of times, you end-up with partial wetting,
Electronics Forum | Wed Jun 13 20:38:23 EDT 2012 | kahrpr
It is possible that there is nickel contamination in the gold. Depending on your plating board vendors put nickel down first. The plating also could be to thin. Dave had a good suggestion in trying to solder the pad with a Iron that will tell a lot.
