Electronics Forum | Mon Dec 23 17:22:32 EST 2002 | davef
Design Of Experiments (DOE). A statistical technique for determining the relationship between and relative importance of various factors controlling a process. So, it is a tool to help do things faster, better, and cheaper. The two variants of DOE
Electronics Forum | Tue Aug 31 17:36:36 EDT 2004 | davef
NO-LEAD COMPONENTS WITH LEAD SOLDER ISSUE: We agree with Russ. We've dicussed this several times on SMTnet. For instance, look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=25394 LEAD COMPONENTS WITH NO-LEAD SOLDER ISSUE: We disa
Electronics Forum | Wed Dec 08 11:26:04 EST 2010 | davef
3 Printer Area Conditions * As stated earlier, heat and humidity are damaging to solder paste. Ideally, the printing area should be maintained at 40% - 50% relative humidity and 72°- 80°F (22-26°C). In addition, no air (cool or warm) should blow dire
Electronics Forum | Fri Jan 05 12:01:26 EST 2001 | Jim M
I've been involved with no-clean flux and conformal coat in the past.It has been my experience that the amount of no-clean flux used is proportionate to how well the conformal coat adheres to the boards.No clean paste did not affect adhesion. The co
Electronics Forum | Wed Aug 09 22:00:44 EDT 2000 | Dave F
Hey Charles!!! Where in earthly heaven did you get a TO263 with "large solderable tab (approx 8mm square) on the back and 5 leads"? All the TO263s that�ve reached-up and smacked me have been "TO220s" with a modified tab and three leads that are f
Electronics Forum | Fri Mar 16 09:18:52 EST 2001 | pteerink
just gotta put in my two cents worth...... theories are great, and I do not disagreee that almost all root causes can be traced back to human error. ( just an aside, but it would be a little hard for me to get ahold of the production guy somewhere
Electronics Forum | Sat Mar 17 08:39:32 EST 2001 | davef
The Meeting is in 5 Minutes series "Root Cause Analysis" (initially published in Roundel Vol. 4 No. 2, September 1996) By Marek Wakulczyk Panic time again ! The boss wants to talk about "root cause analysis" and somehow you get the feeling it has n
Electronics Forum | Tue Mar 20 09:21:47 EST 2001 | Claude_Couture
I got into the electronic assembly business because I love fixing machines. It is very satisfying to see an assembly line working the way it should. Then comes the new operator, and the output graph goes down. If most root causes are the human facto
Electronics Forum | Wed Mar 21 19:39:06 EST 2001 | davef
Thank you for the contributions you've made in this thread. May be setting people free to be involved in other areas is the answer. Situations that have me grinding my teeth are: * The head of Purchasing drop-ships a reel of resistors to a burn-in
Electronics Forum | Thu Jul 20 16:42:52 EDT 2000 | Bob Willis
Here are the details for the OU Lead-Free Project Introduction The Open University Solder Research Group aims to facilitate the implementation of lead-free solders by evaluating their mechanical properties, especially those which are influential to
