Electronics Forum | Tue Feb 11 13:12:25 EST 2003 | Jim Mills
Use a PCB fab house that is capable of "Conductive Via Filling" is the way to do it right. A conductive epoxy is used to fill the drilled via PRIOR to final plating. After final plating, the surface of the "Filled Via" will appear to be the same as t
Electronics Forum | Wed Feb 05 11:10:01 EST 2003 | J. Dumont
Is anyone looking for any PCB assembly work to be done?? We currently build all our boards for our many world class products in house and will possibly be branching into building assemblies for outside companies in the near future. Pricing will be ve
Electronics Forum | Wed Feb 05 15:19:16 EST 2003 | MA/NY DDave
Hi Mostly people here don't start off crawing or hawking about their own shops, or enterprises which includes me, David F in Haverhill and others. Yet it does happen if you watch very close. SO this is the wrong forum for asking your kind of a que
Electronics Forum | Fri Mar 14 23:41:11 EST 2003 | MA/NY DDave
Hi Well maybe someone else has better info yet I don't see this fully associated with density of package. As long as the process gives a good Electroless NI, Immersion AU you should be OK. If it doesn't and the process output is marginal as has been
Electronics Forum | Mon Mar 17 15:32:33 EST 2003 | Jodi Roepsch
Thanks to everyone who took my question seriously and made an effort to share information on this topic. I have done extensive literature searches on this topic in the past but am still looking for more information regarding how this defect affects
Electronics Forum | Wed Mar 19 19:02:39 EST 2003 | Jodi Roepsch
From my experience, we have had little success in reworking boards with the black pad condition. In one instance, with several reworks, we were able to get plated through holes with the defect to take solder but the joint reliability was highly ques
Electronics Forum | Thu Mar 20 14:11:45 EST 2003 | MA/NY DDave
Hi Guys, There are techniques to do rework that involve molecular surgery even when selective, ablation and piles of localized techniques exist yet the cost is far too high and scrapping is mostly a best cost manufacturing alternative. At the cost o
Electronics Forum | Thu Feb 13 10:38:51 EST 2003 | davef
Given that you are bridging front to back, contast the situation with the thiefs used to prevent bridging when wave soldering SOIC. If this is reasonable, the thiefs should be located behind the trailing connector pins. You can prove-out this [and
Electronics Forum | Wed Feb 12 14:33:09 EST 2003 | Ehess
We are in the process of settign up an SMT line with conveyors. When planning for a 4ft conveyor (or 2 or 3ft for that matter), how mush space should I set aside for this? My boss is telling me to leave 4'6" for a 4ft conveyor. I think this is too
Electronics Forum | Wed Feb 12 16:20:01 EST 2003 | vortex
4'2'' should be enough, going any higher and your bound for large gaps between machine and conveyor. Its been awhile since I set any up but i'm sure that 4'2 will be enough but not too much. I'm sure I wrote down my exact measurments, if I come acros
