Electronics Forum | Wed Sep 15 17:53:53 EDT 2004 | aaronrobinson
My question is how does heat alone (125DegC for 48hours) diffuse the water vapour in a component, I figure the amount of water vapour in grams per cubic cm will be the same regardless of temp...yes with temp the RH changes but once the component rea
Electronics Forum | Wed May 03 12:26:30 EDT 2006 | patrickbruneel
This is indeed yet another proof that under impulse of the RoHS directives all norms are flushed down the drain. Bean counters are slowly but surely taking over our industry because they no longer face resistance by form of standards. Even the basic
Electronics Forum | Wed May 24 13:42:27 EDT 2000 | John McGriff
We just had a similar problem with misplacement, and it turned out that the designers had not put the local fiducials in the right places. I am told that placement machines typically recalculate the component centroid to be at the center of a line b
Electronics Forum | Tue Feb 01 04:11:58 EST 2000 | emmanuel
I am to assembly a power SO on the top side of a double side board. My designer has implemented a lot of thermal vias in the heat sink pad of this component. The problem is that i need to prevent the solder cream from polluting the bottom side of the
Electronics Forum | Thu Oct 17 21:32:28 EDT 2002 | davef
Please help to clairify the problem. Are we talking: * A pre-reflow [placement] problem? * A post-reflow [solder wetting] problem? Is the wetting issue that you mention related to the board or to the component? Please give us a little more detail
Electronics Forum | Sat Dec 14 18:40:29 EST 2002 | arzu
we are using aegis circuitca for manufacturing preparation. It works fine. we are a prototype center with small series of different cutomers.Our problem: keeping control over all components... Some are standard in house (used by other depertments as
Electronics Forum | Tue Apr 11 15:23:43 EDT 2006 | Cal
Hi Shawn- If I can remeber....from my Siemens Days on the S15 or F Series Once you send the program over to the machine from the line computer...You can not skip. Remember, these machines in theory are not ment to stop running (i.e. Thus the feeder s
Electronics Forum | Tue Jan 09 13:01:17 EST 2007 | stepheniii
Not unless it's a case of "the only difference is..." What I mean by that is more than once I've been told the only difference in a new rev is one component or one change. But the truth was that was the only reason for the change, and in fact there
Electronics Forum | Fri Aug 03 17:21:03 EDT 2012 | kmots15
We will be running a very large board with 62k+ components on it in the coming week. Has anyone run boards with this qty before? For sanity sake I had to split up the board into 12 individual programs. We will be forced to run it on a My12 due to
Electronics Forum | Tue Jun 24 12:15:17 EDT 2014 | davx
Hi Guys, I have a little keyfob that one of the buttons has stopped working. I have been trying to diagnose the fault and think I have found the offending component. It looks like one of the diodes is chipped slightly. I have also checked the resis
