Electronics Forum | Fri Jun 14 09:15:02 EDT 2002 | edahi
DaveF, Yeah you got that right...because the initial stages of the project, the products would only attach 1 passive (capacitor) hell when things got too cheesy they wanted to attach 20 caps or so....this is not like board assembly, this only 1 Flip
Electronics Forum | Thu Jun 13 20:55:46 EDT 2002 | russ
Having just gine through a similar problem myself (with much less equip.) Here are a few things to consider and/or look at Do you have the proper pad size? It should be the same size as the pad on the BGA. Is the board warping during your operati
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 | Mon Oct 14 13:05:42 EDT 2002 | stockley
I think Cal was only joking about posting resumes and in depth profiles... you were... weren't you? I really only work on the fringes of the SMT world these days and read the forum for amusement mostly. Aside from obscure facts about old Siemens mac
Electronics Forum | Tue Feb 10 15:13:06 EST 2004 | patthemack
Hey Vinny, Sorry I haven't looked at this for a while. 3 things to try: Tombstoning- The ground plane side is larger because the solder mask allows for a little slop at the board shop (clearance around a pad of a few mils). Since there is not a defi
Electronics Forum | Thu Mar 24 17:36:31 EST 2005 | Grant
Hi, Yes MYDATA vibration feeders are a nightmare, but you might want to check the feeder. We had one that would vary a lot, and it never seemed to be able to be set to the right vibration level for consistent feeding. It turned out to have a problem
Electronics Forum | Wed Oct 26 06:36:33 EDT 2005 | rlackey
Hi Ken, We would build a one off with an exact number of components on a different line, in a different manor completely to a volume, chipshooter job - however, we'd only really be doing a one off like that if it was a prototype as we're not in that
Electronics Forum | Fri Dec 02 18:37:46 EST 2005 | Ola
What is the quality worth to You? How much is "to much" for You to spend on a good quality ckeck? How much benefit can You get in return, If You in the first place get the processes straight? These are the main questions that You have to answer Yours
Electronics Forum | Sat Dec 03 16:26:40 EST 2005 | grantp
Hi, I have seen demos of these scopes, and don't think they really show you very much. If you profile your board right, and drill up to solder a thermocouple onto the inner balls of the device so you really know your getting a good profile, I don't
Electronics Forum | Thu Feb 16 14:06:51 EST 2006 | russ
You are pretty much on your own when selecting fluxes. search archives in forums and see what everyone else is using and doing. Whoever you purchased the wave from should be installing this machine, certifying it, and providing training for your
