Electronics Forum | Mon Mar 11 11:11:38 EST 2002 | slthomas
Tahnk you for posting the charts. > > They look > very useful, but I have a silly question: In > reflow problems _ What is "leaching" ? Dissolution of the component metallisation into the liquid solder. _ > What is "Halo effect" ? "...a
Electronics Forum | Tue Dec 10 18:30:15 EST 2002 | MikeF
From personal experience, if the PWB vendor is cutting costs and doing their final rinse with tap water instead of DI you will get ionic contaminants left on the board. You might consider having CSL, or one of the other independent labs mentioned e
Electronics Forum | Mon Dec 16 06:53:23 EST 2002 | lloyd
We simply don't allow any 'walkman' type systems to be used by anyone in our factory. It's simply from a health and safety point of view. Think of this scenario: everyone in a department wearing walkmans, a fellow worker in someway gets injured/falls
Electronics Forum | Mon Feb 24 16:01:15 EST 2003 | MA/NY DDave
Hi Claude and the next person gave some good advice I would follow. When I spoke above about vibration I was thinking of machine, transport and other, yet shock like tapping the board on it's side or otherwise is pretty much the same. You create mic
Electronics Forum | Thu Aug 26 21:54:57 EDT 2004 | KEN
I ran into this about 2 years ago. The Rework Operators (all 3 shifts) would rework a device, rince the board with tap water (yep, 50k / Cm^3) from a nearby sink, then send the PCB to test (which is really ironic as they had to walk past the DI wash
Electronics Forum | Fri Jul 22 10:30:43 EDT 2005 | Frank
I haven't heard of a meter like that. Consult Fuji for a recommended supplier if it is so special. The meter from Gates has a very sensitive microphone, so you tap (or strum) the belt and the vibration is heard and converted to Hz. If you want to
Electronics Forum | Tue Aug 30 07:01:52 EDT 2005 | edgetech
EdgeTech SMT Tech here. I was questioning the process our Engineers are using concerning Water Soluble solder paste. I have no experience with this paste. I was wondering what need so be done differently when using this paste. As far as I know the on
Electronics Forum | Tue Sep 27 08:22:27 EDT 2005 | Amol
I am using masking tape, the 3M high temp blue masking tape. the problem though doesnt seem to be related to the masking tap as i am seeing pin holes and eventual dewets over entire ckt board (its almost as if the board has chickenpox under black lig
Electronics Forum | Wed Dec 17 09:17:53 EST 2008 | caldon
Hi Matt, Please help us understand what you are trying to do with the dual monitors. If my memory serves me correctly the PC on the P-N-P is mostly used as data storage. The vision system including component cameras, fiducial cameras and bottom visio
Electronics Forum | Thu Feb 05 19:40:37 EST 2009 | davef
There is no standard for deionzed water when used to clean boards. As you state, J-STD-001 defines a cleanliness requirement and a method for determining cleanliness. How you go about meeting that requirement is your decision, as it should be. Fresh
