Electronics Forum | Fri Jun 12 13:28:23 EDT 2009 | dontfeedphils
Asymtek in-line machine with the Jet head hands-down. And since you will be coating silicone you should virtually have no touch-up after it exits the machine because of the higher viscosity of this material.
Electronics Forum | Sun Apr 10 03:25:35 EDT 2005 | Peter
Normally, some conformal coatings do not have very good wetting properties, that should be basic function of a good coating material (the same reqirement as avoid bubbles during coating process)! For UV curing conformal coatings, you can try Lackwe
Electronics Forum | Thu Apr 28 11:14:27 EDT 2005 | bbarr
If you apply the RTV after coating, what happens to bond strength since you are now bonding to the coating and not the board? Will the caps still survive vibration and shock? I specify applying RTV before coating for this reason. Am I correct? I als
Electronics Forum | Wed Apr 28 12:48:02 EDT 1999 | Justin Medernach
| | | We use Immersion Gold (AuNi) for our 20 mil pitch and BGA boards. | | | Lately, we have been having solderability problems with boards with this surface from some of our suppliers. | | | | | | We are considering trying boards with White Tin so
Electronics Forum | Sun Jun 13 01:40:20 EDT 2004 | dj_ruf
You should look at the Asymtek Conformal Coating machines. The C-740 is easy to program, high throughput and proven repeatability. Used at top electronics and automotive manufacturing sites throughout Europe, Asia-pacific, and the Americas.
Electronics Forum | Wed Nov 09 09:27:44 EST 2011 | edmaya33
If you are using a Humiseal. try UV-40 gel which is about 20Kcps. it will dam your material from capillary flow. It should be applied prior to coating of your low viscous material.
Electronics Forum | Mon Jun 26 17:51:17 EDT 2006 | russ
Just don't see it happening Bolos, aint gonoing to make up 3 bucks with BGA vs. QFP. Both packages from an assembly standpoint should be equal dollars. Why do you want BGA over QFP? Is it because you think your process will be better with BGA? Ru
Electronics Forum | Tue Oct 28 09:47:50 EST 2003 | woodsmt
It is possible to use a selective wave soldering fixture to "mask" the BGA devices from the wave. Unless you have a very thick board or one that is tough to heat, you should have no problem with BGA. Of course you should run some process experime
Electronics Forum | Sun Feb 04 15:06:20 EST 2007 | Scotty
Profile should have a longer cool soak. Verify as was mentioned all pin/fixture support through out the entire process. Print, Place, pre reflow hand load, post reflow, carriers, ICT, Depanel and FCT. Conformal Coated or Potted? Mylars work well for
Electronics Forum | Tue Jul 03 01:54:42 EDT 2018 | rdhiman1
Reaching out to all conformal coating experts, please help! While setting up conformal coating using the automated atomized spray, we observing issues associated with conformal coating wetting on the following regions: 1) Component edges 2) Metalli