Electronics Forum | Thu Feb 26 15:49:48 EST 2009 | GSx
Hi I am looking for informations/specs about graphite/carbon deposited on PWB as a "spring contcat" or land (? not sure how to say in English). - Are there any Standards (IPC?)who define correct thickness of graphite ? - Are there any Test Method
Electronics Forum | Thu Mar 05 22:13:16 EST 2009 | davef
There is no IPC specification on carbon ink. Consider talking to your ink supplier to develop the proper quality definition that you require. Most suppliers have a good understanding of their product performance, for instance: http://www.coates.com/
Electronics Forum | Wed Mar 11 17:51:22 EDT 2009 | GSx
Thank you so much Dave, by having different lots of PCB received (same Supllier) with suspected and good carbon ink deposit, I found useful to adopt a comparison test among the different lots by usingthe IPC-TM-650 2.4.1 Adhesion , Tape Testing (lik
Electronics Forum | Fri Mar 13 11:55:23 EDT 2009 | boardhouse
Hi GSX, just and FYI on why you are seeing a difference per lots. Carbon Ink is Not used on a steady bases by most manufactures, and shelf life of the Carbon ink is fairly short, my guess is what they are doing is adding thinner to the carbon ink t
Electronics Forum | Tue Aug 23 14:25:50 EDT 2005 | pjc
Here's the oil: BIO 30 - Biral Industrial oil (operates to +300�C ) BIO 30 is an extremely high quality synthetic industrial oil for a wide number of applications. BIO 30 leaves no carbon deposits and is highly resistant to oxidation. An outstandin
Electronics Forum | Tue Dec 01 17:50:43 EST 2009 | swag
This is cut and paste from a Conceptronics Document - hope it helps you: Following are the lubricants recommended for oven maintenance: 1. To lubricate the conveyor chain use: A. Biral BIO30 -synthetic high temperature oil (highly recommended)
Electronics Forum | Fri Oct 23 17:40:19 EDT 2009 | gregoryyork
So if you have Carbon showing on this would this not mean it is something Organic contaminating the pad.I have seen this before with solder resist depositing over the pad.
Electronics Forum | Fri Oct 16 14:01:22 EDT 1998 | Justin Medernach
| I AM LOOKING FOR INFORMATION ON A WAY TO REPAIR STENCIL FIDUCIALS TO KEEP THEM SOLID AND AS DARK AS POSSIBLE.SOMETING THAT WOULD BE MORE OF A PERMANENT SOLUTION,I HAVE USED PERMANENT INK BUT IT EVENTUALY WIPES OFF OR FADES... | Don't laugh, this w
Electronics Forum | Tue Sep 01 11:25:19 EDT 2009 | rocko
Hi davef, Thanks for the suggestion. I have inspected the heaters but I think they are OK (no visible coating, deposits, etc.). Unfortunately, I'm not sure that the residues are ionic. It was just preliminary report of the person responsible for the
Electronics Forum | Mon Oct 19 23:37:16 EDT 1998 | john godfrey
| | I AM LOOKING FOR INFORMATION ON A WAY TO REPAIR STENCIL FIDUCIALS TO KEEP THEM SOLID AND AS DARK AS POSSIBLE.SOMETING THAT WOULD BE MORE OF A PERMANENT SOLUTION,I HAVE USED PERMANENT INK BUT IT EVENTUALY WIPES OFF OR FADES... | | | Don't laugh,
winsouce.jpg)
.gif)
