Electronics Forum | Mon Jan 24 11:50:18 EST 2005 | gregp
I was going to leave this one alone but when Europlacer gets mentioned (1 machine sold in the US last year) and we don't I couldn't resist.
Electronics Forum | Sat Jul 18 01:47:35 EDT 2009 | magnifico
hi guys, can anybody share any info about the maximum acceptable surface resistivity on ESD floor & table mats? Is 10G ohms still ok? thanks
Electronics Forum | Tue Apr 06 12:13:46 EDT 2021 | luca
Hello, does anyone know if there is an IPC standard for carbon ink? we use for keypads instead ENIG, we found batchs of PCB with 2-3ohm, 20ohm, until 300ohm( resistance of contact surface) by the same PCB supplier!
Electronics Forum | Tue Dec 07 08:01:40 EST 2021 | jineshjpr
Hi DucHoang, Thanks for your response - Understanding that OSP will have more surface resistivity which does not allows the solder to flow on the entire pads. Let me check peak & revert back sooner.
Electronics Forum | Thu Oct 14 08:01:48 EDT 1999 | JohnW
Gee Dave That's the first time I've ever seen myself listed for a quote! Brian, what your saying is on the whole right, on the surface of it the mask, as long as it's cured properlay shouldn't make a difference but I have to say that I've found so f
Electronics Forum | Fri Jul 07 09:15:23 EDT 2000 | K. Chak
Hi Dave, This particular p/n calls for print&etch for wet process..and the problem occured due to surface contamin. with resist residue resisting copper from etching off. The high pressure nozzle was a problem at developing oper. and it is fixed now
Electronics Forum | Wed Apr 08 01:43:49 EDT 1998 | Clint Meech
We currently screen print glue for our bottom side components. We are looking to get the bottom side of one our boards screened with a solder resist (to cover mounting holes, etc, for the wave-soldering process). This would create an uneven surface
Electronics Forum | Wed Sep 10 17:12:55 EDT 2008 | gregoryyork
I dont know about analysis on boards it is OK as long as the people carrying it out know how to interogate the answers.I worked on a problem just last week where an analysis house in China tested the resist then the pads and found on both surfaces C
Electronics Forum | Fri Sep 11 15:11:23 EDT 1998 | Dave Celestian
I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. The problem here is t
Electronics Forum | Mon Sep 14 09:09:10 EDT 1998 | Earl Moon
| I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. | The problem here
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