Electronics Forum | Fri Apr 16 19:52:39 EDT 1999 | Scott McKee
| While trying to sell me a low temperature baking system for SMDs the salesman mentioned that the 125C for 24hr bake had been known to cause co-planarity defects. | I thought I'd ask some experts. Any help guys? | Let me get this straight... He's
Electronics Forum | Tue Apr 20 03:08:47 EDT 1999 | Scott Davies
| I had someone suggest that they weren't really necessary as long as your process is good. Is this just a way to help you keep an eye on your process? | | I was thinking, as we set up our line, our money would be more well spent with controlling t
Electronics Forum | Mon Apr 12 22:17:19 EDT 1999 | Jeff Sanchez
| | Thanks all you kind and knowledgeable folks. I no longer will be participating in this forum. | | | | After careful consideration, I have come to the conclusion registration, in the manner required to participate in what was an open forum, is n
Electronics Forum | Tue Mar 23 12:27:50 EST 1999 | CHANCE TURNER
I WORK FOR A SMALL TO MID-SIZE CONTRACT ASSEMBLY HOUSE. WE ARE TRYING TO FIND ANY SURVEYS OR STUDIES DONE ON THE USE OF BGA'S BY COMPANIES ON NEW DESIGNS. THE WAY EVERYBODY'S ALWAYS TALKING ABOUT BGA'S YOU WOULD THINK THAT THERE WILL BE NOTHING EXC
Electronics Forum | Mon Mar 22 16:59:15 EST 1999 | B K
| Has any one seen failures of chip resistors after 1-2 years where the junction between the silver termination and the restive element on the top of the ceramic has corroded through. This results in a high resistance failure after this period of tim
Electronics Forum | Tue Mar 16 17:05:14 EST 1999 | Jeff Dahlin
We are having a small number (~2%) of our boards pass our manufacturing diagnostics, fail once they reach the customer, fail when they get back to us and then start working again after handling them for a short time. We have eliminated a lot of item
Electronics Forum | Wed Mar 17 09:32:35 EST 1999 | Dave F
| We are having a small number (~2%) of our boards pass our manufacturing diagnostics, fail once they reach the customer, fail when they get back to us and then start working again after handling them for a short time. We have eliminated a lot of it
Electronics Forum | Mon Mar 15 15:52:38 EST 1999 | Earl Moon
| After switching from No-clean flux to Water soluble (Kester)we encountered voids problem (X-ray and microsectioning). Reducing the apperture sizes made the voids smaller but did not eliminate them. So we had to go back to No-clean. Any idea why voi
Electronics Forum | Wed Mar 17 12:19:53 EST 1999 | Scott Cook
| Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there a
Electronics Forum | Wed Mar 17 11:31:45 EST 1999 | Quadmaster
| | I'm in the process of selecting a medium speed pick & place machine. I need to place a wide range of components from 0805 | | chips to a 144 pin MQFP (32mm square 25mil lead spacing). | | | | Anyway, I'm looking at the Quad QSA-30, the Philips
