Electronics Forum | Fri Mar 26 13:02:18 EST 1999 | Scott McKee
Sorry, in the following message I'm agreeing with Graham - not Greg... | | I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's p
Electronics Forum | Thu Jan 28 14:10:57 EST 1999 | Tom B
Hello Netters, I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI solder mask
Electronics Forum | Wed Jan 27 21:02:53 EST 1999 | Dave F
| i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated temperatu
Electronics Forum | Thu Jan 28 08:58:10 EST 1999 | Peet
| | i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe
Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook
| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro
Electronics Forum | Fri Mar 20 10:31:19 EST 1998 | Mick Jones
| I will be starting a conformal coating process soon, I am looking for any pointers on | 1) Best method for masking components, tape mask, liqued mask | 2) Which is best Spray or Dip? | 3) Compatiblity with no clean solder paste (flux residue) | I h
Electronics Forum | Mon Aug 27 16:38:06 EDT 2001 | seand
Hey guys, Given the fact that i know very little about your product I would say put the burden on the apps engineers at Speedline-Camalot(www.speedlinetechnologies.com). General rules of thumb may not apply depending on your material selection and
Electronics Forum | Mon Aug 27 15:02:45 EDT 2001 | davef
It�s uncommon to test green strength. [Whatever �green strength� is. Some chip bonder adhesive suppliers have taken to taking about improvements in �green strength� their literature. We have asked sales types to quantify this and have never heard
Electronics Forum | Wed Mar 27 07:41:54 EST 2002 | paul_stamper
As Mitchell stated before, the cleaning of the stencil is rather important. When considering stenciling of adhesive you must review your stencil cleaning process. The recomended process is a ultrasonic cleaner with a heater option. These systems are
Electronics Forum | Wed May 07 09:31:28 EDT 2003 | davef
We use uV Dymax glue for thermocouple attach sometimes, but don't like the remainder [anal] and loosing attach, sometimes. Roger Saunders, President Saunders Technology, Inc; said: PRO: � These products are easier to use than high temperature solde
