Electronics Forum | Thu Apr 02 14:58:49 EDT 2009 | vladig
Hi Peter, Have the plating thickness checked with XRF. If the layer of Au too thin, then Ni can diffuse all the way through it during the first run and the surface won't be perfectly solderable for the second side. it might also have a thin layer of
Electronics Forum | Mon Dec 22 16:09:02 EST 1997 | Justin Medernach
| I am designing an SMT pad for a ss metal switch. | Finished copper thickness is .0014 and nickle-plating | originally is 150 millionths. Initial testing yields 100,000 to 150,000 switches before intermitent failures (copper is reached.) I want 50
Electronics Forum | Sat Jun 21 00:37:20 EDT 2003 | nifhail
Most of the capacitors & resistors supplier have implemented Leadfree finished on their components and like it or not, most of the PCBA house already using them in their process. I just got a notice from my component supplier telling me that they wil
Electronics Forum | Thu Nov 10 20:39:44 EST 2022 | SMTA-64386598
The solderability shelf life of ENIG is related almost entirely to diffusion of O2 through the gold plating. When O2 diffuses through the gold, the underlying nickel is oxidized rendering it unsolderable (with ENIG - you solder to Ni, the gold dissol
Electronics Forum | Tue Mar 31 05:26:14 EDT 2009 | d0min0
Hello, we had similar problem in the past - when we had to change PCB supplier from a batch of hundreds of boards (NiAu plated, SnPb process) we got 2-3 boards with paste wicking to components leads what we did, was to check the thickness of gold on
Electronics Forum | Mon Dec 14 10:53:10 EST 1998 | Earl Moon
| Has anyone had any experience with using this alternative plating process? Some board houses are pushing toward this plating. Is there any long term data on this process? Any problems experienced with smt and thru-hole? I've heard tin whiskers to b
Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F
| Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a
Electronics Forum | Mon Jun 30 11:06:38 EDT 2003 | nifhail
Any further input guys ? What is the effect of reflowing lead free component with eutectic solder paste, as far realiability is concerned ? Input is very much appreciated. thank you
Electronics Forum | Mon Jan 26 11:14:08 EST 2009 | evtimov
This one might help http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=13630&mc=5 Emil
Electronics Forum | Mon Feb 09 20:01:23 EST 2009 | davef
Look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=57106
