Electronics Forum | Wed Mar 26 22:17:09 EST 2003 | dlkearns1
I Like your analysis here. I dunno the whole story, but I've tracked parts popping/falling off to the metalazation of the parts, from various suppliers, as most suppliers have some type of pre-tinned coating on the leads.(not that this means anything
Electronics Forum | Fri Feb 21 00:23:30 EST 2003 | Dreamsniper
Technology keeps changin' and you need to keep on upgradin'. Lucky are those who work in a company that acquires advance equipment and technology yearly or everytime they are available, they are called the trend setters. Training coupled with hands-o
Electronics Forum | Fri Feb 21 20:24:09 EST 2003 | MA/NY DDave
Hi I don't have some of the names in front of me yet check out on the web anyone related to the EMPF center formerly out of Indianapolis, IN. Most these guys did not move East. Chicago has a couple of shows like SMTA and another that several of the
Electronics Forum | Mon Mar 24 08:57:20 EST 2003 | russ
I don't know if I would call it a "blow hole". what I believe happens (I don't have a camera to watch spheres during the reflow process) is that when the flux starts heating up, expansion, bubbling, or something physically displaces the balls. We fo
Electronics Forum | Fri Feb 21 20:14:53 EST 2003 | MA/NY DDave
Hi I don't know of anything special in the ways of dispensing since they don't normally care about the differences of UV or Conductive or pastiness. The only difference is WHAT you are striving to do with the adhesive and how the adhesive moves as
Electronics Forum | Fri Feb 21 19:49:36 EST 2003 | MA/NY DDave
Hi Good Luck Neil, When I first saw this process described, what you are experiencing was my first visual thoughts. Partial filling as well as huge solder voids inside of the joints. I figured for low reliability product or short life maybe this t
Electronics Forum | Fri Feb 21 11:21:31 EST 2003 | MA/NY DDave
Hi "PCB blank quality. " I am not sure what the word blank means. ------------- I can think of piles of places for you to start study. First digest some of the IPC stuff. They have some good pictures. I would also start collecting defects that ar
Electronics Forum | Fri Feb 21 11:22:13 EST 2003 | MA/NY DDave
Hi "PCB blank quality. " I am not sure what the word blank means. ------------- I can think of piles of places for you to start study. First digest some of the IPC stuff. They have some good pictures. I would also start collecting defects that ar
Electronics Forum | Mon Feb 24 10:03:03 EST 2003 | davef
YiEng, MA/NY DDave, Look at: * Description on first item on this list: http://laser.jlab.org/bairweb/hardware/vme/vme_spares.asp * Description of first item on each list: http://www.audiocircuit.com/9120-valveamplifier-circuit/Diy/Diypackages/Curci
Electronics Forum | Tue Feb 25 14:42:28 EST 2003 | MA/NY DDave
Hi UNCLE!!! UNCLE!!! You know maybe I do remember this term, yet it is so long ago it doesn't ring a clear bell. From the stuff you passed over it had to come from the electrical technicians and engineers. Bare Boards was a more common term in m
