Electronics Forum | Wed Dec 04 18:59:34 EST 2002 | Steve Godber
Is there a Technical graph/chart/table guideline for designers on which Solder Sphere/pad size is plotted vs. pitch design to acheive maximum SJR?
Electronics Forum | Thu Dec 05 17:40:24 EST 2002 | davef
While unfamiliar with some of the terms you use, could this be what you seek? http://www.pcbstandards.com/downloads/Metric%20Environment/General%20Documentation/PCB%20Design/PCB%20Design%20Routing/Metric%20BGA%20Routing.pdf Stepping backwards just
Electronics Forum | Mon Dec 09 21:15:27 EST 2002 | MA/NY DDave
Hi I haven't looked yet at what DaveF gave you. It is my guess that your SJR stands for Solder Joint Reliability. The answer would in general be NO to your question. Usually things in the design community are done in steps that provide a certain
Electronics Forum | Tue Feb 07 10:11:06 EST 2006 | amol_kane
hi, the only way you can say that the process is in/out of control is to plot the values (mean) of a metric against the 3 sigma limits for a Xbar chart, or plot a individuals run chart. you can also do a capability analysis nased on a metric (say,
Electronics Forum | Tue Mar 27 15:25:43 EDT 2007 | ianchan
Hi Dave, Thanks for your input; what I understood the gentleman was describing was a ISO/MIL/ANSI standard that actually plots out a chart (e.g. timeline/frequency of use versus environmental variable parameter, where the variable may be dust, oil,
Electronics Forum | Mon Nov 12 12:47:28 EST 2007 | davef
While we're unsure what you're trying to accomplish, .GER files are viewer files. The Gerber Plot File Viewer (GerberView) is a Windows based application that allows you to view Gerber plot and NC Drill files. You need a .GBX file or some other file
Electronics Forum | Sun Jun 06 11:01:36 EDT 2004 | adm
Hi I'm trying to plot a LSP profile to reduce void. But I do not have much info about LSP. Does anyone know what are the specific times and temperature of the LSP profile? And are there any ways to eliminate solder void other than changing profile
Electronics Forum | Sun Jun 06 11:02:33 EDT 2004 | adm
Hi I'm trying to plot a LSP profile to reduce void. But I do not have much info about LSP. Does anyone know what are the specific times and temperature of the LSP profile? And are there any ways to eliminate solder void other than changing profile
Electronics Forum | Tue May 03 05:46:43 EDT 2005 | mattkehoe
Consider ssd for your BGA's. http://www.sipad.com/SIPAD_NASA_Plots.htm www.sipad.net mkehoe@sipad.net
Electronics Forum | Thu Jul 14 10:00:21 EDT 2005 | chunks
Any one using SPC to monitor their wave solder process? My point is collecting defects and using a scatter plot is useful but only after a problem occurs. SPC's true function is to warn of impending problems that are about to occur. Can SPC really
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