Electronics Forum | Sat Sep 14 12:24:44 EDT 2002 | scottefiske
We need to remember here that as printer manufacturers were enhancing their product lines, miniaturization was quickly being developed in the background. In the last 2 years I was involved in developing and conducting a D.O.E./F.M.E.A in determining
Electronics Forum | Wed Sep 18 16:12:41 EDT 2002 | kenbliss
Hi Dilbert I do not know if you meant to use the words argue in your posting, but assuming it was not sarcastic I would like to offer my point of view as an equipment supplier to people like you. First the customer is not always right but they are
Electronics Forum | Sun Oct 20 12:49:11 EDT 2002 | johnw
Dave, I've had a few intersting conversations with Dr Lee, now there's a guy who know's stuff, but as it turn's out even he doesn't have all the answers on why things void. Many of his papers point towards oxides or contamination on the ball, so age
Electronics Forum | Wed Oct 02 20:59:23 EDT 2002 | davef
We�ve been stewing on this and it just dawned on us the part that�s missing. Blow-holing is caused by BOTH of the following: * Moisture absorption by the resin that holds the board together. [Steve is addressing this with his various baking schemes
Electronics Forum | Wed Oct 02 09:36:10 EDT 2002 | scottefiske
Dragon, Was recently responsible for No Clean Process/Material evaluation and implementation project. Shop was 100% Water soluble facility. Several Top Paste manufacturers were invited to participate. (3) were evaluated. All key variables were identi
Electronics Forum | Mon Oct 14 13:31:03 EDT 2002 | seand
Hello all, Dave, this is just another example of how your attitude towards others in the forum, outweighs your open mindedness toward their right to participate....It's SMTnet....not DAVENET. I'm not surprised to see you try to quantify the validit
Electronics Forum | Wed Oct 23 16:56:03 EDT 2002 | mikestringer
Hi Marc I too have been using a fully synthetic Motor oil on Heller reflow ovens for a number of years. In our case Mobil 1 5W-50. We have a field failure problem with some 1% resistors under conformal coating where sulphates are dissolving the si
Electronics Forum | Mon Oct 14 17:59:45 EDT 2002 | russ
When I used the micro-stencils, We purchased the holder from the stencil manufacturer. As far as design we used 5mil stencils for uBGAs,6-7 mil for larger 63/37 balls, and 8 mil for CBGAs. Aperture openings used were slightly smaller than what we wo
Electronics Forum | Fri Oct 18 17:04:38 EDT 2002 | ereno
We have a connector mfg that claims that their design is good and does not contribute to the problem that we are having. The problem is evidence of poor soldering. All other components that surround this connector have very good solder joints, with t
Electronics Forum | Wed Oct 30 23:08:25 EST 2002 | caldon
Jeff as far as ladder Logic it should really be quite simple for JOT to configure in fact most people with PLC experience can get this machine running. Look at the PLC in side AB Slick 50, Gould/ modicon, GE, Siemens are a few options of the PLC insi
