Electronics Forum | Fri Feb 18 10:10:49 EST 2005 | Frank R.
Thanks Dave, The problem is on all 0805. Do you think it could be a reaction with the flux from the wave or the one in the paste. Do you think the problem is the viscosity of the coating. SPEC = Viscosity 150cP nominal ASTM D-1384. I ask you all
Electronics Forum | Thu Feb 17 10:33:53 EST 2005 | Frank R.
I use conformal coating DYMAX #984-LVUF and I don't know if it's a problem of viscosity but 0805 components are not covered properly. We use a dispensor to applied it and we cured it by UV. Even if I apply a thicker layer, the coating seems to have
Electronics Forum | Sun Dec 26 23:48:01 EST 2010 | raghu
Dear Sir, We are using 1B31 conformal caoting of 48 sec viscosity in Zahn #1 cup, by machine(PVA354) application with Tank air pressure 2.3 psi, automising air pressure 1 psi. 7 days after application we are observing peeling off problem.. And n
Electronics Forum | Fri Sep 11 12:08:10 EDT 2015 | derrikf
I built one using an old Asymtek Automove. When all was said and done, it cost less than $400, including what was paid for the machine itself. It's a very basic setup, (air over syringe), but for our needs it does everything and more. With air to syr
Electronics Forum | Thu Feb 17 15:01:23 EST 2005 | davef
We're not familiar with your DYMAX #984-LVUF. The problem is not with your conformal coating. The problem is with your 0805 [and not all of 0805, probably just those from a specific supplier]. This lack of coverage of components is called dewetting
Electronics Forum | Fri Feb 18 11:25:14 EST 2005 | davef
It's weird that it would be just 0805. When we see this it relates to a single part number and it goes way after a time. We use a Humiseal 1B73. I've emailed you the contact for a person that is very knowledgeable on conformal coatings.
Electronics Forum | Tue Aug 10 01:02:31 EDT 2010 | raghu
We have PVA 354Bench top conformal coating machine. We are going to procure the Humiseal 1B31 material. Is this material is suitable for this model of machine? Is there any special pecautions to be taken while programming? What are the main problems
Electronics Forum | Mon Mar 21 09:23:34 EST 2005 | sforman1
Some UV cure coatings do not have the correct rheology for sticking to small sharp corners. 984 is one of them. MicroCoat Technologies, Allen, TX makes one that works every time.
Electronics Forum | Thu Nov 23 06:05:24 EST 2006 | 1B73
The solid content of 1B73 is too low, especiall when you add large amount of thinner, not easy to get enough coating thickness.
Electronics Forum | Wed Feb 23 10:01:00 EST 2005 | frankracine
Dave, Few questions concerning your Umiseal 1B73. To cure your Acrylic coating do you respect specification ( 2Hrs-170degree F) or you go faster than that? What do you use to cure it? Do you have to clean your nozzles each day or each monday beca
