Electronics Forum | Mon Nov 11 11:28:32 EST 2002 | davef
Sand is not a great conductor, compared to copper. Never heard of using the stuff on RF boards. Our board fabricator uses Dupont CP100, now CP101, [or something like that cuse who's going to check?] when plugging via on cheap boards. Your board fa
Electronics Forum | Tue Jul 20 08:12:13 EDT 1999 | jacqueline coia
Could someone please tell me if it is possible that erroneous 'leakage current' readings in an instrument could be inheritated by the type, design and fabrication of the PCB itself, if so then where could I find information relating to this subject.
Electronics Forum | Thu May 09 17:21:39 EDT 2002 | davef
In describing a bare board, you need to talk about base, laminate, and conductive materials. Common laminate materials are: * Glass fabric * Cotton fabric * Paper Common NEMA grades of technical laminates are: * Glass Fabric Grades: G3, G7, G10,
Electronics Forum | Sat Sep 29 22:56:13 EDT 2007 | asoelu
the vary results might be from following issues.. the co2 during the test the during time for this testing... the manual testing method is conductivity measurement however the bulk contamination tester like omega is resistance measurement (i remem
Electronics Forum | Tue Dec 03 15:26:07 EST 2002 | GSW
This might be a trival mundane suggestion but try to use non conductive plate to hold components. Probably even made of the pallet material. I am sure your pallet fabricator will have tons of scrap and he can help you find one. T
Electronics Forum | Tue Jul 22 20:38:28 EDT 2003 | Paul T.
Have the PCB fabricator use a conductive paste to fill the vias and then finish by plateing over the via. Make sure it's coplanar to the side they're on, usually secondary side for discretes. PT
Electronics Forum | Sun Sep 08 15:07:42 EDT 2013 | davef
PCB designers specify the application of solder mask [eg, varnish, solder stop mask, solder resist, etc] to fabricators to reduce the potential of bridging between two conductive traces during assembly soldering processes [eg, wave, reflow and hand s
Electronics Forum | Tue Jul 20 08:32:37 EDT 1999 | Dave F
| Could someone please tell me if it is possible that erroneous 'leakage current' readings in an instrument could be inheritated by the type, design and fabrication of the PCB itself, if so then where could I find information relating to this subject
Electronics Forum | Mon Dec 02 20:53:29 EST 2002 | davef
Gerber[R] Data (File). Used in directing a photoplotter during printed circuit board and stencil artwork fabrication. Gerber Scientific Instrument Company used to be the dominant producer of the photoplotters used for "shooting" film, back when mec
Electronics Forum | Fri Oct 03 10:52:32 EDT 2014 | rgduval
Thanks for the suggestion, Arifa. However, it doesn't look like any of these are for the Universal Instruments GSM2 pick and place machine. The Keller-Druck link is for a GPRS Modem with a datalogger. The Sparkfun and Cybrotech sites seem to be
