Electronics Forum: carbon (Page 1 of 19)

Removing carbon finish from pcbs

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.

Removing carbon finish from pcbs

Electronics Forum | Tue Jun 06 15:42:36 EDT 2017 | stratsmyboy

Hi im new to the forum. We have product where we have applied a carbon finish. I want to remove the carbon to reapply but cant seem to find a solution. Its baked onto solder mask. Any ideas? I was hoping something non abrasive to save scratching the

Removing carbon finish from pcbs

Electronics Forum | Tue Jun 06 21:15:23 EDT 2017 | davef

I'd be surprised if you find a non-destructive method of removing carbon ink. Your best bet is following the recommendations of your ink supplier.

Removing carbon finish from pcbs

Electronics Forum | Thu Jun 08 02:37:55 EDT 2017 | robertpeng

Carbon ins has very strong resistance to acid and alkali, not easy to remove, maybe return your boards to PCB supplier? they may have solution. Robert Peng- SysPCB

Soldering fumes

Electronics Forum | Mon Mar 19 22:07:05 EST 2001 | davef

Your carbon filters are getting gummed-up by the smoke component of the fumes. [Your carbon filter is intended to remove the vapor portion of the fumes.] You need a cheap bag filter in front of the carbon filter that you can sacrifice. These fumes

Carbon Ink vs Immersion Gold for key pads.

Electronics Forum | Wed May 03 15:56:25 EDT 2006 | Board House

Hi Patrick, Thank you for the info, We like to push ENIG, for us being the ENIG line is in house it is cheaper to use than the carbon, plus shelf life of the Carbon is an issue in Storage. Pre-application. Thanks again, Mike

Carbon Ink vs Immersion Gold for key pads.

Electronics Forum | Wed May 03 22:14:29 EDT 2006 | davef

We think well done carbon ink and well done ENIG are equally reliable [maybe 1M operations]. If the gold is pourous [not all that an uncommon], ENIG is far less reliable than carbon ink.

Graphite/Carbon deposit on PWB ( any Industrial Specs?)

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/

Wave Soldering Of Carbon Ink Buttons

Electronics Forum | Fri Dec 14 10:59:23 EST 2001 | Donald C. Burr

We are considering converting from a water wash wave solder porcess of carbon ink touch pad buttons to a no-clean process. Since the carbon ink buttons are exposed to the molten solder, we are concerned about the residue that is left behind from the

Wave soldering of Carbon Switch pads on PCB

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.

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