Electronics Forum | Wed Apr 11 22:05:58 EDT 2001 | davef
OA pastes are more hydroscopic than NC pastes. Hydroscopic. The capacity of a material to absorb and retain moisture from the ambient air. Sometimes this is compounded if you remove paste from the frig and let it warm to room temperature, because
Electronics Forum | Thu Jan 27 14:49:53 EST 2000 | Glenn Robertson
Tuan - One of the reasons I suggested pre-tinning (aside from the negative effects of Gold on appearance and reliability) is the known slower wetting of Sn/Ag and Sn/Cu alloys as compared to Sn/Pb. If you don't have to be Lead-free, the high Lead
Electronics Forum | Tue Feb 03 14:19:29 EST 2009 | grics
I would agree if you have a board to setup the process. But sometimes this doesn't work... If for some reason if the customers AVL has a Lead Free BGA and I am running Leaded paste (yes this really happens!), you will need to run hotter to get your
Electronics Forum | Tue Oct 06 14:29:14 EDT 2015 | cadco
Update 6 Oct 15: We have completely re-configured the oven PID boards such that everything is now visible on the oven by the s/w and all is now OK since the "Machine"card is now recognized. We have just one additional procedure to do and that is to
Electronics Forum | Thu Oct 25 10:05:05 EDT 2012 | kz9yyc
Hello all, I am having difficulty with an OmniExcel 10 oven. Zone 5 upper will not hold setpoint = 165C (it typically runs ~10C higher). Here is what I know: 1. The machine is not turning on zone 5 heat when temp is too high. 2. Zone 5 lower is
Electronics Forum | Tue Apr 24 21:00:58 EDT 2018 | marlonbc
Hi All, Would just like to course through this concern on a product that we are contracted to assemble. It is mainly used for an automatic hand sanitizer dispensing product. By design there is a restrictive value of current that it needs to dissipat
Electronics Forum | Thu Oct 25 11:15:55 EDT 2012 | aj
are you sure the zone 5 blower is running? sounds like it isnt.... no harm to check all blowers while you are at it.
Electronics Forum | Mon Jun 09 17:41:45 EDT 2003 | davef
Welcome. You have selected a fascinating area to work. "What is delta temperature? Depends on what someone is talking about. Here's some possibilities: * In process equipment definition, the difference in temperature from one side of conveyor to
Electronics Forum | Fri Sep 21 11:02:37 EDT 2001 | davef
You can measure temperatures any place that you would like, but the issue is the temperature of the solder. We've seen solder temperatures that vary from lead to lead on the same component. Why don't you want to measure the temperature of your so
Electronics Forum | Fri Feb 01 10:57:52 EST 2002 | davef
Yes, that's what people are thinking. The 217�C melting temperature that you mention requires a ~250�C reflow temperature. Generally, boards, legend ink, and components cannot take that temperature. Further, few ovens can produce that temperature
