Electronics Forum | Mon Mar 29 16:33:29 EDT 2010 | mikesewell
SAC 305 liquidus is 219 C. A hybrid profile is often recommended with a peak of 230 C (reflow the SAC and not kill the Pb parts) with an extended liquidus of 60-90 sec to get good alloy diffusion. Or if the design (parts & pwb) can tolerate it go P
Electronics Forum | Mon Nov 07 08:27:56 EST 2005 | chunks
It could be you are drying out your solder paste. Most flux formulations are alcohol based and after a few hours can dry out. This can can lead to dewetting and solder balling as well. Especially if you do not homeplate your R's and C's. A simple
Electronics Forum | Mon Jun 27 10:45:31 EDT 2005 | franciscoioc
Thank's for the information Bob. I have another question, at the moment my peak reflow is at 218c, this means I am above the 210c a lot of companies run off. If I am building boards using SN63/37 solder paste with lead on my process, and using lead f
Electronics Forum | Fri Mar 06 02:47:15 EST 2009 | lococost
Have you tried higher peaktemp? I saw the QFP is sn90pb10, This has a liquidus of 268 - 302 C. A good paste should be able to handle 230C (or more), of course you would need to check your other components peak temp.
Electronics Forum | Tue May 08 12:57:30 EDT 2001 | Morris
I've seen these used & they work quite well. The fiberglass scratch brush. http://contacteast.com/product/prodpage.cfm?grp=4F7A9B48-C870-11D4-8A700050DA5FEB55&sid=FC52FB8C-A662-46E4-B3CBDAD625F7B085 You will want to train the operators to use some
Electronics Forum | Fri Dec 03 04:11:47 EST 2010 | grahamcooper22
A baking oven over 100 C will be at zero humidity. Do you really need to store pcbs/devices at 200 C...this will surely harm some products ? IPC 33B01 allows storage of MSDs in a dry cabinet at less then 5%.....these can operate at room temp or 40 /
Electronics Forum | Fri May 05 18:51:59 EDT 2000 | Steve Thomas
Looking for the best choice in books on soldering processes, primarily reflow but wave is going to be with us for a while so..... If you had to buy one today, which would you start with? Here's the list I gleened from the archives: Coombs, CF, "Pr
Electronics Forum | Thu Sep 17 17:21:55 EDT 1998 | aa
| I am thinking of purchasing a Panasonic MV series chipshooter. If you own a Panasonic MV machine I would like to hear what you like and dislike about it. Is the service good? Are spare parts readily availiable? Does Panasonic support and follow up
Electronics Forum | Sat Feb 02 12:50:11 EST 2008 | fastek
All this dicussion of salaries and job losses came to mind when I saw this article. Maybe a competent technical guy disillusioned by the state of the current electronics manufacturing landscape in this country has something to fall back on..........
Electronics Forum | Tue Jul 16 18:05:29 EDT 2013 | Mike Konrad
This was built and sold by Trek Industries. Several years ago, Stoelting purchased Trek. I believe the machine is now discontinued. I am not sure if they continue to provide support. Here is there contact information: PW STOELTING, L.L.C. A VOLLRATH
