Electronics Forum | Mon Jan 10 19:13:46 EST 2000 | TNT
HELLO MIKE, THE PROBLEM WITH THE VIA BEING IN THE MIDDLE OF THE PAD CAN BE HANDLED. IF YOU ARE HAVING PROBLEMS WITH SOLDER FLOWING THROUGH AT REFLOW YOU MIGHT WANT TO CHECK YOUR VACUUM AT YOU SCREEN PRINTER. SOMETIMES THE VACUUM THAT HOLDS THE PCB
Electronics Forum | Sat Jun 13 11:00:21 EDT 1998 | Earl Moon
| We are very concerned about outgassing in wavesoldering. | If anyone knows how to use properly well pcb's before soldering in order to avoid this problem please let me know. I have this problem in FR4 large double sided pcb's. My soldering line is
Electronics Forum | Wed Feb 20 12:22:14 EST 2008 | tonyamenson
iv40, I don't suppose you know/remember what base material you were using that caused the problem and what material you switched to was, do you? We just pre-bake all our lead free PCBs as a precuation but I would like to remove the process if I can
Electronics Forum | Tue Jan 23 09:47:02 EST 2018 | dleeper
I've used VJ Electronics Summit series of rework machine. I liked the programing interface. You can used canned scripts for basic removal/replacement processes or you edit/write your own if you want a customized work flow. The machines are very ope
Electronics Forum | Wed Jun 13 14:14:50 EDT 2007 | realchunks
Must be one of Davef's new hires. Someone feel a vacuum?
Electronics Forum | Mon Oct 03 11:53:30 EDT 2005 | paulbendemire
Regarding vacuum levels, how do we check that? Can anyone suggest a procedure? Thanks, Paul
Electronics Forum | Tue Sep 27 15:57:43 EDT 2005 | stepheniii
Ceramic caps are denser than most other components and I"ve found the tops can be slightly rounded. You may want to slow down the turret speed for some parts. Do you ever get a location where there should be a part but there is not? If the part fly
Electronics Forum | Mon Jun 21 16:11:41 EDT 1999 | John Thorup
| | I am finding that some of our IC's are coming from the supplier with the humidity gauge in the bag reading 10-20%. Has anybody done any tests to determine what humidty level in a package will cause problems during reflow? | Usually a proper m
Electronics Forum | Mon May 06 16:34:20 EDT 2019 | tey422
First of all, I am not familiar with the machine you stated. But there is something you should check out. That is if the nozzle tips having solder paste stick to it or not. If nozzle tips having a fresh paste stick to it, the component might not a
Electronics Forum | Wed Jan 09 14:46:29 EST 2008 | chef
Besides changing fluxes, do you have good knowledge of actual flux volumes? Do you have a micrograms per square value? Pre-heats can affect flux by burning off too soon and also not enough - therefore moisture hits the wave- how's your humidity cont
