Electronics Forum | Thu Oct 28 11:41:21 EDT 2004 | Steve Stach
Hello Loz, Blue residues on circuit boards can be caused by copper corrosion, component body deterioration, marking permanently, and adhesive break down. In this case, a more subtle mechanism appears to be possible. This is a no clean application
Electronics Forum | Tue Mar 24 09:04:33 EDT 2009 | sachu_70
External CO2 extinguishers certainly help. But requires the alertness of a trained personnel to use the same effectively during a fire. I have also come across a solution wherein the extinguisher is kept always connected to continuously deliver pres
Electronics Forum | Mon Apr 25 06:34:29 EDT 2016 | spoiltforchoice
I'm going to ask the obvious question first. Why can't you place the entire job the same day you paste it? Getting a sensible workflow is a far better method of improving productivity than experimenting with crazy solutions. I can see a gas atmosphe
Electronics Forum | Wed Oct 24 02:09:34 EDT 2018 | simondsr
Hi everyone, I am new to this SMT. I have just graduated my study, have zero experience in SMT industry as I studied Automotive before. Ok lets proceed to the main objetive, I have a question regarding package rebake. From what I have learned, the
Electronics Forum | Fri Dec 15 11:45:38 EST 2000 | DaveJ
All, Thanks for your quick response. However, my primary concern is not the question of solderability advantages of nitrogen versus air. With all things (zone temps, track speeds, flow rates, etc.) being equal, what would be the profile differences o
Electronics Forum | Mon Jan 25 18:03:34 EST 1999 | Joe
Greetings, Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. Also, is there any danger of the pcb's giving off some kind of gas or vapour which can be harmfu
Electronics Forum | Thu Apr 18 23:56:27 EDT 2002 | Abelardo Rodriguez
I'm trying to get a better understanding of the cooking process of pcb's. The use of nitrogen in reflow and wave ovens. Seems to have a wide margin of acceptance as a standard gas to prevent oxidation of metals in the board. Has any one heard or us
Electronics Forum | Wed Oct 09 17:50:09 EDT 2002 | alj
Wrong..! It is a money loser for Teradyne and it will be cut in the future. Wow, auto thermal profiling.. Gee, that is a little late. When will the summit platform be redesigned. It's the same thing they sold 10 years ago with a few modificati
Electronics Forum | Wed Apr 14 07:59:54 EDT 2004 | arcandspark
Makes a lot of sense, thanks for the excellent input. The peak temp I am running fo our pb free (238C and approx. 90 seconds above 183 C)is the recommended profile from T.I and also the solder paste manufacture. Not sure exactly what the melting temp
Electronics Forum | Sun Apr 18 06:49:10 EDT 2004 | Nick Prince
You might like to check ou the SSTC at the National Physical labs, in the UK. They have done a lot of research in mixing PB and PB free alloys. Its high Science stuff but intelligable. The upshot seems to be that if you mix PB and PB Free alloys th
