Electronics Forum | Thu Aug 21 22:10:07 EDT 2003 | adlsmt
Well, for some reason the board house will pay for the boards but has some issue with paying for the parts on them. Why am I not supprised? Perhaps I have mis-diagnosed the problem. We have found two different board p/n's with the same type of defec
Electronics Forum | Fri Aug 22 09:49:31 EDT 2003 | davef
Ask your supplier for a corrective active and failure analysis of the boards. In parallel, send the boards to a failure analysis laboratory to determine the material on your gold pads. Take your work to another supplier.
Electronics Forum | Thu Aug 21 12:31:54 EDT 2003 | adlsmt
I have some finished boards that I have concluded have "black pad" defect. Outside of the black crap on some of the solder joints, if the boards are electrically functional, are they reliable? Any opinions would be appreciated as I dont want to throw
Electronics Forum | Thu Aug 21 20:39:09 EDT 2003 | davef
You have one option: Take the boards to the fabricator that build the board and ask him for $20k.
Electronics Forum | Thu Aug 21 22:47:39 EDT 2003 | adlsmt
Well after reading all kinds of stuff about this I still question if it is my current problem BUT, how common is this??? I dont want to be afraid of the boogie man but it seems like a lot of folks are having problems with black pad. I have used imers
Electronics Forum | Thu Aug 21 17:17:47 EDT 2003 | justin
Do some push / pull testing. Typically with black pad, you can flick the components right off the board. If you have this, the boards are about as reliable as a Yugo. If you get decent push / pull results, odds are you don't have black pad and you
Electronics Forum | Wed Jun 29 16:25:51 EDT 2005 | mattkehoe
When discussing this with the customer he said that his vendor recommended a hard gold plating finish on the board due to the BGA. I said "hard gold"??? And he said yes, hard gold. Turns out the boards were plated with hard gold, not ENIG. Thank
Electronics Forum | Fri Feb 28 01:08:33 EST 2020 | sarason
Back in the 50's, 60's and 70's gold plated boards were all the rage for high reliability. test equipment, milspec etc. Nowadays only edge connectors are gold plated. Immersion plated gold is also used but it doesn't last the distance like gold plate
Electronics Forum | Fri Feb 28 00:42:40 EST 2020 | luciano_zhang
What is the use of gold plated boards?
Electronics Forum | Tue Jun 28 19:56:59 EDT 2005 | davef
Matt: Yes, if the gold was really thick, it could appear like your pictures. In measuring gold plating thickness, we'd want to use xray fluorescence [XRF]. For alternatives, look here: http://www.pfonline.com/articles/pfd0027.html
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