Electronics Forum: black pad (Page 1 of 32)

black and grey pad

Electronics Forum | Sat Oct 06 08:42:21 EDT 2001 | davef

Please give us additional background on your board, solder, process, etc. If you are talking about black pad in ENIG solderability preservative, check the fine SMTnet archives to get started.

black and grey pad

Electronics Forum | Sat Oct 06 05:33:47 EDT 2001 | spchua

I had recently encounter the "black and grey" pads problems for the BGA pad after the convection re-flow. The pads shows in in "black and grey" color and a litter solder in it, and it happen in ramdom, when applied heat and solder on the "black and g

Black pad

Electronics Forum | Wed Aug 17 12:26:06 EDT 2011 | rdubya

Hey all need your input, this looks like classic black pad to me. what do you think?

Black pad

Electronics Forum | Wed Aug 17 21:29:25 EDT 2011 | davef

If looks were the measure, we'd say, "Hail yes, it looks like black pad." The determination of black pad or not is best done in a laboratory.

Black pad

Electronics Forum | Fri Aug 19 11:13:40 EDT 2011 | eezday

I'm still sold on the "black pad" model. The price of gold should be a good indicator of what is happening. The gold plating solution is being used well past its life and plating times are stretching. Extended time in the plating solutions is a lo

Black pad

Electronics Forum | Thu Aug 18 12:10:40 EDT 2011 | rdubya

Do you happen to know of any good labs for this analysis?

Black pad

Electronics Forum | Thu Aug 18 15:13:28 EDT 2011 | blnorman

STI is now at 261 Palmer Road Madison, AL (moved a couple of years ago).

Black pad

Electronics Forum | Thu Aug 18 17:17:59 EDT 2011 | rdubya

Thank guys, appreciate the help.

Black pad

Electronics Forum | Fri Aug 19 01:56:53 EDT 2011 | ppcbs

I've been seeing a lot of product come in with what appears to be black pad lately. I've sent stuff out to labs to be told there is no contamination. Contamination or not solder won't wet to it. Regardless of what it is we have a method to remove

Weak joint strength and black residue

Electronics Forum | Fri Jun 08 17:22:51 EDT 2007 | naynayno

We have been producing an IMS assembly with SMT dpak's for some time. However, we recently encountered a new problem by chance - the parts can be flicked off with a finger nail. I state by chance because the solder joints are wetted and shiny with

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