Electronics Forum | Sun Nov 01 10:43:30 EST 2009 | greg_diaz
Does anyone have any historical data on vacuum problems with SMT equipment at High Altitudes?
Electronics Forum | Tue Oct 07 12:32:39 EDT 2003 | Don Beane
I'm looking for the dielectric values of materials for flex, rigid and flex/rigid pcb construction. Has anyone put together tables for this information? Where can I find the information to figure out what dielectric resistances I need based on altitu
Electronics Forum | Thu Nov 01 10:57:34 EDT 2012 | kris1128
Has anyone heard whether the elevation of a plant can effect solder joint formation? One plant at sea level, one at 7,000 feet elevation... same equipment and profiles, big voiding defects at higher elevation. I did a search and found no similar post
Electronics Forum | Fri Aug 28 13:58:00 EDT 2015 | markhoch
Randon question.... Are there factors I should be considering in assembling/manufacturing PCBs at 6700 ft above sea level? I searched the achrives and Google, I havent found much on the subject. Thanks in advance for your thoughts!
Electronics Forum | Fri Aug 28 15:15:33 EDT 2015 | dyoungquist
We are at 4800 ft above sea level and do nothing special because of the elevation. Good question.... I really don't know if going higher than we are creates any special conditions one needs to deal with.
Electronics Forum | Fri Aug 28 17:06:25 EDT 2015 | markhoch
Yeah, I'm assuming as long as the oven is profiled with a thermal profiler, and we're controlling the humidity, we should be fine. Thanks for your reponse!
Electronics Forum | Fri Apr 15 11:16:03 EDT 2005 | HOSS
It's a longshot but.....I have seen low-standoff parts move caused by via's under the part erupting from within internal layers (outgassing). If this is a multilayer PCB and vias are not well plated or pourus, they can and will expand when heated.
Electronics Forum | Sun Nov 01 21:01:26 EST 2009 | isd_jwendell
I'm at 6800 ft. The only issue I had was related to a PEM nut that was not packaged properly. There was a piece of K@pton tape that was not centered on the part and the tape would stick to the carrier. The vacuum on my machine would not allow me to
Electronics Forum | Wed Sep 07 04:28:26 EDT 2005 | Slaine
were looking at paste, wire, preforms and solder bars (for solder pots), concentraiting on HMP, sn62,96S, and 2 different sac alloys, we also have 7 different fluxes and 16 temination inks (which were also having to change for RoHS because the ink co
Electronics Forum | Fri May 17 12:23:38 EDT 2002 | Hussman69
A man in a hot air balloon realized he was lost. He reduced altitude and spotted a woman below. He descended a bit more and shouted, "Excuse me, can you help me? I promised a friend I would meet him an hour ago, but I don't know where I am." The wom
