Electronics Forum | Fri May 12 13:30:44 EDT 2000 | Cunli
Earl, How are things? Thank you for returning, and hopefully staying. You've made many good suggestions on running the site. However, it required a lot of thinking and resources to get things done. I gave it a good try, and thank you for compleme
Electronics Forum | Tue May 02 14:18:50 EDT 2000 | Erhard Hofmann
I think it is very nice to have the feature of getting informed when someone answers to a question I put on the smt.net. But (and that's a big but): If you send out an email why can't you just include all the informations you want to send in the emai
Electronics Forum | Wed Apr 19 13:32:51 EDT 2000 | C.K.
Dave: The main part of your machine that VOC-Free fluxes attack is your spray fluxer itself. If you haven't already, you'll need to purchase a spray fluxer that's designed to accomodate water-based VOC-Free fluxes (i.e. made of stainless steel with
Electronics Forum | Tue Apr 18 19:37:35 EDT 2000 | Russ Cutler
Let me be more specific about my dilema. We have used a vapor phase reflow process for many years. We just bought a Heller 1800 this year (2000). We may very well be able to run all 600 very different board types we build in 10 recipies on the Hel
Electronics Forum | Tue Apr 11 10:30:46 EDT 2000 | Jeremy Smith
I am having a problem with some joints on a 100 pin pqfp and few different soics on one particular board. When viewed a 8x with a "Mantis" inspection scope the joints look as though they wetted to the ic leg but when probed the leg will pop loose.
Electronics Forum | Tue Apr 11 16:42:56 EDT 2000 | Chad Notebaert
I�m thinking �Poor intermatallic� It could be a few things. Lets start at the beginning. -Is your paste a 63/37 mixture? -Have you monitored you screen printing, Verify Solder deposition, Are you getting enough paste? -You say the solder looks like i
Electronics Forum | Mon Apr 17 19:30:27 EDT 2000 | Boca
All of the above is good stuff. To add, I have seen this several times if the assembly is wavesoldered. Heat from the wave can partially reflow the top side SM solder joints and weaken them. To test, check joint strength before wave and then after
Electronics Forum | Fri Mar 10 12:28:24 EST 2000 | Keith Luke
SMTnet extends a warm welcome to the Center for Board Assembly Research (CBAR)at the Georgia Institute of Technology who have joined with SMTnet to provide access to the Electronics Forum through the school's web site. SMTnet is pleased to cooperate
Electronics Forum | Mon Feb 28 03:46:34 EST 2000 | Hany
Hello 1-In our facility we face a lot of power failures due to the to the city electricity network problems.So, it has hppend many times to loose some PCA's inside the reflow oven. Of course it costs a big money to buy a UPS for a reflow oven. One
Electronics Forum | Thu Feb 17 03:53:24 EST 2000 | Scott Cook
It is with some regret that I find that feel that I can no longer contribute to this forum with the same zeal I once had. The forum old timers will remember when I was a leading respondent to technical questions. Many issues drive me to this decisio
.gif)
