Electronics Forum | Mon Sep 30 20:41:25 EDT 2002 | jason
Hi, The acceptance level for voids is 25% and most of it on your case should be the paste. If you want to reduce / eliminate it, you gotta have the Production to practise FIFO for the usage of the paste. If it is expired paste or exposed to long
Electronics Forum | Fri Dec 06 10:16:57 EST 2002 | davef
Bare board cleanliness is still primarily measured by resistivity of solvent extract (ROSE) using instruments such as Omegameters and Zero Ions. What is considered as "acceptable" cleanliness varies between specification and from company to company.
Electronics Forum | Wed Jul 09 10:55:51 EDT 2003 | Veronica
Hi Reman01, I have done that before when I was in Motorola. What kind of ball are you trying to repair? How many pieces of BGA chip do you need to repair a day? If it is not too many, you can do it by yourself. It is a lot, such as 100 to 1000 piece
Electronics Forum | Thu Feb 12 13:50:06 EST 2004 | cyber_wolf
Just a thought: I think that we could motivate our US manufacturing force to unprecedented levels of throughput, efficiency, and quality if it was acceptable to motivate employees with bamboo canes. On a serious note; how can we (U.S.), ever be comp
Electronics Forum | Wed Sep 15 11:05:16 EDT 2004 | rlackey
Hi John, It depends on what equipment and resources you have at your disposal - if you have an antique wave with crap adjustment & hand sprayed flux, no debridging/air knife system on a tightly packed board with a multitude of fine pitch connectors
Electronics Forum | Tue Sep 28 05:04:10 EDT 2004 | grayman
In obtaining almost zero defect in solder wave. I would like to suggest the following: First,We must consider changing machine if it is more than 5 years old. second, use the right tools for the right job. Most of the traditional engineers will us
Electronics Forum | Tue Sep 28 08:56:01 EDT 2004 | grayman
"The optimizer has FLUX DISTRIBUTION WINDOW it measures - the amount of flux applied. -Identify uneven distribution of your flux. The FLUX DISTRIBUTION WINDOW permits you to obtain information about your fluxer's performance and repeatability
Electronics Forum | Mon Jul 16 12:03:42 EDT 2007 | davef
We're aware of no industy acceptance standard for max moisture content of a board. For more on moisture levels, get a copy of: "Removing Moisture from Electronic Components and Assemblies", CS Leech, Jr, Circuits Assembly, May 1994. The article disc
Electronics Forum | Mon Jan 12 01:20:07 EST 2009 | sachu_70
Hi Konrad, I would suggest you include a clear mention of your requirement towards mask color as a "Special Note" in PCB Gerber / PCB drawing, for ready reference by your PCB manufacturing during fabrication. However, slight changes in color shade co
Electronics Forum | Tue Mar 09 14:53:16 EST 2010 | davef
Resistivity Of Solvent Extract [ROSE] is a bulk ion contamination [BIC] test method. It should thought of as a process control tool used to assess ionic contaminants. Don't consider it an acceptable tool for establishing 'GO-NOGO' limits. The stan
