Electronics Forum | Thu Nov 19 22:48:22 EST 2009 | davef
Since the bubbles: * Are only on the solder connection, we'd guess there must be some compatibility issue between the flux residues and the conformal coat materials. * Occur after curing, we'd guess the cure recipe is too rapid and is entrapping voli
Electronics Forum | Tue Dec 01 18:01:17 EST 2009 | swag
I should add we use one listed lube from each recommendation and were able to find everything (although that was close to 10 yrs. ago). We bought enough to outlast the oven so we haven't had to buy any since. The oven is still going strong!
Electronics Forum | Mon Jan 11 13:31:54 EST 2010 | cbart
I know IPC is working on a spec for voiding for QFN'S. However since its not released I'm curious what others have defined as the max allowable % voiding on the leads (not center ground).
Electronics Forum | Mon Jan 18 15:07:12 EST 2010 | mikesewell
Usually the print specifies the material since the design is qualified with it in place. I've used several from Scotchweld 2216, Scotchweld DP190, Hysol E-20HP, to NASA outgassing qualified Masterbond 10HT.
Electronics Forum | Mon Jan 25 04:25:49 EST 2010 | aungthura
Thanks Davf that socket we couldn't change since the customers supply these sockets.we can contro only our process.
Electronics Forum | Wed Feb 03 21:18:33 EST 2010 | mika
BTW. The "duster" since it's in a closed container under pressure; when released, there will be moisture around the area. Water that is. Not so good on MSD-components... Sincerely
Electronics Forum | Fri Jun 25 03:50:24 EDT 2010 | leadthree
They are panels of 2 and we break them before ICT. Have to say that we do not check that 100nF cap in ICT since it's parallel with some eCaps.
Electronics Forum | Mon Aug 02 11:16:02 EDT 2010 | dman97
Thanks for the answers guys. I knew it had something to do with the calibration menus. It had just been so long since I had to do maintenance to an MPM printer. I had been working with DEKs and Ekras for the past 6 years.
Electronics Forum | Thu Oct 28 09:55:54 EDT 2010 | dyoungquist
We have a Heller 1707EXL (7 zone) and have been doing lead free with it since 2006.
Electronics Forum | Thu Dec 02 01:14:19 EST 2010 | jucki
Hi Patrick Thanks for your advice. Since bothering you, I wanna to ask one question," why is the water soluble solder not commomn in the market"? Warmly regards
