Electronics Forum | Thu Jun 08 11:05:27 EDT 2017 | davef
By the way that you stated your question, I assume that you want to do something different with the carbon inked pads. If that's incorrect, instead of removing your carbon ink, considering printing an insulating layer over the ink.
Electronics Forum | Mon Apr 07 21:08:52 EDT 2003 | Satbir
Is this safe to wavesolder the PCB in wave contaning carbon pads for switch or somekind of masking is to be put on that pads.
Electronics Forum | Mon Apr 07 22:07:25 EDT 2003 | davef
It depends on the carbon polymer that the fabricator printed on your board. It could be: * No wave soldering * Wave soldering with a peelable mask * Wave soldering ... probably one of the latter two. Watch it. Some temporary masks can affect the
Electronics Forum | Fri Aug 05 12:13:28 EDT 2005 | spommer
As part of our conversion to lead-free, I'm redesigning a pcb that had switch contact patterns screened on the board using carbon ink. On the new board, I plan on using the ENIG process and having the switch contacts be patterns of copper with the n
Electronics Forum | Thu Jul 24 22:58:13 EDT 2008 | davef
At the 2004 IMAPS Nordic Conference, Claus W�rtz Nielsson from Nokia Mobile Phones published "The Evolution of Surface Finishes in Mobile Phone Applications" [www.imaps.org/adv_micro/papers/Nordic2004paper.pdf]. Some of the results were: * Corrosion
Electronics Forum | Mon Jul 06 14:54:36 EDT 2020 | dwl
The pictures are kinda fuzzy so its hard to tell of the center pad is electrically connected to anything. If it's not, if its just here for mechanical stability, then you're probably fine. The other thing to make sure of is that both switches are th
Electronics Forum | Sun Jul 05 22:21:58 EDT 2020 | raoult
Hi, The micro switch is broken on my device, it was a tactile one (4mm) : image1, image2 Do you think I can buy another one and just solder it like this with 2 wires (I can't solder it back to where it was because it's too tiny I don't have the sk
Electronics Forum | Tue May 02 20:55:10 EDT 2006 | Board House
Hi all, I'm looking for anyone with info in regards to reliability of carbon ink vs. Immersion Gold Key pads. I have customers that still request Carbon Ink for there Key pads, while the majority have switch to Immersion Gold. Is there any readin
Electronics Forum | Thu Jan 06 17:33:07 EST 2011 | boardhouse
Hi Johan, Sounds like you have already gone over your product very well to reduce product cost. Switching away from Deep gold Tabs & carbon ink Key pads can save quite a bit. The only other thing to suggest would be material - Moving away from Isol
Electronics Forum | Thu Aug 06 13:09:37 EDT 1998 | Ben Salisbury
| Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not ele
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