Electronics Forum | Mon Jan 09 07:56:49 EST 2006 | slthomas
Squeegee pressure or height, snap off, the age and/or condition of the paste and the condition/cleanliness of the stencil are about all I can come up with, unless you got a new stencil and you changed the design parameters or they made it wrong.
Electronics Forum | Mon Jun 19 14:04:39 EDT 2006 | slthomas
Because some lead free solders are very corrosive to anything but titanium. Also "clean it very well" is kind of a crap shoot, isn't it? Did you get your solder tested for impurities and lead %age after you did the swap?
Electronics Forum | Wed Aug 09 08:59:52 EDT 2006 | zanolli
I agree with verifing this part is even high temp reflow compatible. The age of the original dwg release, 1986, and as there is no mention of high temp reflow compatibility, only a mat'l call out of nylon, leads me to think it is not.
Electronics Forum | Wed Dec 03 08:51:47 EST 2008 | mrmaint
Try looking at Chart Industries. They offer HASS/HALT chambers that are capable of reaching the paramaters that you are looking for. Will require a nitrogen supply for the cooling end.We had a 3000gal tank of liquid nitrogen to feed two chambers.