Electronics Forum | Wed Jun 13 16:51:26 EDT 2012 | davef
Sorry, but I don't have a quick and easy answer. Before jumping the 'black pad shark,' tell us more about your boards ... * Is the gold still on the pads after soldering? * Can you make the pads take solder using a soldering iron? * Does this happen
Electronics Forum | Sat Dec 17 11:45:40 EST 2005 | DAM
You know, many SMD components have copper alloy leads and then a copper (or Ni) barrier on them. On the copper (or Ni) barrier there is the finish. Usually the finish is made of Sn\Pb (tin-lead), and if I solder with a Sn\Pb solder paste it's all rig
Electronics Forum | Thu Aug 02 18:42:02 EDT 2007 | grantp
Hi, The thing is I don't see, even if this was a viable process, how it would be better. It's still multiple layers of copper with components on one side of it. It's the same as what we do now, but just much more complex to build? Grant
Electronics Forum | Thu Oct 17 05:16:44 EDT 2013 | vincentdesilva2003
Anyone can help me how many percentage of blowholes and pinholes if i do the followings: 1. Increase copper plating thickness more than 25 microns. 2. Pre Baking of PCB to remove gassing by drying out the PCB's
Electronics Forum | Mon Jun 07 10:57:31 EDT 1999 | Dave F
| | | | Where I can find some informations about repairing of SMT boards? | | | | | | | | Thanks | | | | | | | | Marcos | | | | | | | A first place to start is IPC's 7711 and 7721 encompasing repair, modification, and rework procedures. | | | |
Electronics Forum | Wed May 22 21:01:49 EDT 2002 | davef
Ah, the customer is always correct, again. And you are officially �painted into a corner�. Actually, your customer is not correct. Thinking that money is going to be saved by specifying copper component terminations [or whatever in the world they
Electronics Forum | Sun Aug 15 20:03:14 EDT 2021 | tomdegas
How do I enable the tools on a MyData Hydra head. The machine is telling me that tools 1-5 are disabled. How can I enable them? Thanks Tom
Electronics Forum | Fri Oct 16 12:41:29 EDT 2015 | deanm
Do you have a solderable surface (walls)? It looks like most walls have a silver arc at the top but some do not (especially the last link) which I interpret that it has been plated (in most cases). Is it possible that the component does not have suff
Electronics Forum | Wed Jan 29 14:22:56 EST 2003 | russ
Most bowing I see is caused by an asymetrical layer stackup of the PCB. (different copper thicknesses throughout the stackup) e.g. for a 4 layer board - 2 oz. copper on layer 1, 1 oz. copper on layer 4, etc... I would doubt that is the V-score since
Electronics Forum | Fri Jul 30 16:06:22 EDT 1999 | Earl Moon
| | | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That
