Electronics Forum | Thu Jul 21 07:15:27 EDT 2011 | ccouture
I cleaned the stencil with IPA 99% before applying the Rain-X. Apply Rain-X as per instruction.
Electronics Forum | Thu Jul 21 07:21:47 EDT 2011 | ccouture
So far after ~1500 units printed with the stencil treated once with Rain-X, no issues were detected with solder joints. The only difference is no more solder bridges on fine pitch with .010" openings. The print is picture perfect on all pads, nice an
Electronics Forum | Fri May 11 14:54:38 EDT 2012 | stentech
I am not aware of the Nano protek flaking off. However I do believe it can wear off through abrasion. Unforunately there is no red light goes off when it has worn unless you have good paste inspection. Even when it wears it will not take you to a neg
Electronics Forum | Thu Jan 29 15:27:54 EST 2015 | markhoch
I agree with SWAG on this. Nano Coatings make a big difference on paste release. I found when placed on the topside of the stencil, it also helps to reduce stencil wear, though others complained that it affected the solder roll, so most stencil house
Electronics Forum | Thu Sep 07 11:39:39 EDT 2017 | swag
Two magic bullets help us greatly with fine pitch printing: 1) nano coatings (we use a DEK product) YES it really does work 2) temperature control in the printer (AC unit). Of course good quality stencil and proper cleaning of the stencil are im
Electronics Forum | Fri Sep 22 14:10:19 EDT 2017 | slthomas
Just for the sake of passing along the information, the fine grained stencil provided zero improvement over the standard PhD stainless and was not nearly as helpful as the baked-on nano-coating. We probably won't be trying that again unless we go und
Electronics Forum | Wed Jun 14 09:34:25 EDT 2017 | cyber_wolf
In my experience there is no need for wet wiping stencils. We run 0201'and micro BGA's daily with no issues. If you are having paste release issues, I would be looking at other things. Aperture area aspect ratio, aperture design, land design, sold
Electronics Forum | Thu Sep 07 08:45:02 EDT 2017 | dleeper
In my experience with similar sized parts, the nano coatings (or what ever your supplier might call them) do help with repeatable paste release. How are you cleaning your stencils? A big red flag to me is that your stencil worked fine for the first
Electronics Forum | Wed Aug 29 03:16:20 EDT 2018 | cannizzaro
It is recommended that the thickness of the stencil of 0.1mm, the steel mesh should be partially nano-coated. It is best not to dry easily, and the particles are not easy to be too large. I have tried ALLPCB for this kind of BGA in the past and they
Electronics Forum | Fri Jul 08 12:45:10 EDT 2011 | markhoch
It's a $40 adder to my stencils if I have them apply it. But I've just discovered that if you have THEM add it, they add it thru a stencil and only apply it to the appertures. (My guess is they do this because it allows them to use much less material
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
2481 Hilton Drive
Gainesville, GA USA
Phone: (770) 538-0411
.png)
