Electronics Forum | Thu Jul 17 15:23:23 EDT 2003 | James
It is really hard to tell what it is. It just looks like parts of the pad did not solder and you can see where the solder would even go around the pad leaving voids.
Electronics Forum | Fri Jul 18 11:05:07 EDT 2003 | davef
A highly activated flux will begin to corrode the imm tin coating after 10 minutes. Corroded tin has poor solderability.
Electronics Forum | Wed Jul 23 13:01:06 EDT 2003 | Greg
Adam, You might try marine products such as 'Salt Away' or 'Salt Terminator'. These are made to get rid of salt residue in marine engines used in saltwater applications and are not harmful to standard wiring. They are available at marine stores al
Electronics Forum | Fri Aug 01 23:43:52 EDT 2003 | Yngwie
Thanks Dave, the residue appeared to be similar to fungus. First, I thought it could come from water soluble flux but, our plant only runs no-clean. So, can I concluded that this greenish "fungus" looking staff is not initiated from high hot air temp
Electronics Forum | Fri Aug 22 09:44:45 EDT 2003 | davef
Kenny: Since you need to use water soluable flux and can't use no-clean, consider asking your board fabricator to plug the via.
Electronics Forum | Tue Sep 09 06:57:52 EDT 2003 | cyber_wolf
Yes I have cleaned the nitrogen knives out, and I have a chiller hooked to the heat exchanger(radiator).I am starting to think that I need to replace the radiator with another blower...??? Thanks for the input. Regards, Sr.
Electronics Forum | Thu Sep 25 12:27:23 EDT 2003 | John S
Is anyone using an automatic titrator to monitor their flux? If so, can you recommend a product? Is it reliable and easy to use? We are using a VOC free no-clean flux and are titrating manually. Thanks John S
Electronics Forum | Mon Sep 29 23:46:51 EDT 2003 | daman
Hello everybody, We have a new product having a lot of open gold area. solder splashes during the reflow is a pain in the... Its an extremely small PCB and kapton taping is not an option. Stencil is at 10% reduction, Cleaning after every cycle. Reflo
Electronics Forum | Thu Oct 09 21:41:02 EDT 2003 | Dean
You could send the boards out for contract cleaning. Saponification and DI wash. I take it your rework process does not keep track of serial or ID numbers? What about tracking lot codes on the replacement part? maybe it's unique enough to isolate
Electronics Forum | Tue Oct 21 10:59:49 EDT 2003 | AXL
Hey Russ I hate to say it but you switched from Indium for no reason! If you were getting residue then your oven profile was off! Your flux should have burned off if it was done correctly, that's the purpose of "no-clean".
