Electronics Forum | Fri Feb 29 08:12:56 EST 2008 | davef
Solder paste suppliers often make recommendations on solder paste handling after removing it from the container [eg, jar, cartridge, etc]. For instance, Multicore Solder Paste Handling Guidelines, September 2004 says: As a general rule, paste that h
Electronics Forum | Wed May 07 21:20:53 EDT 2008 | davef
Causes of Delamination ["Quality Assessment of Printed Circuit Boards" Lund, Preben; Bishop Graphics 1985 0137450354] The reason for delamination is epoxy starvation in the glass cloth layers or an incomplete curing of the base material. It has been
Electronics Forum | Wed Jun 04 10:49:23 EDT 2008 | arbarr
The the HDD onwindows 2000 pc running Fuji Flexa for 5 m/c's on our smt assembly line died 2 weeks ago. We've since reinstalled a new HDD. To cut along story short Fuji via their agent here (Productivity Partners Formerly Astro) after 14 days do
Electronics Forum | Thu Jun 05 17:54:42 EDT 2008 | iantech
The the HDD onwindows 2000 pc running Fuji Flexa > for 5 m/c's on our smt assembly line died 2 weeks > ago. We've since reinstalled a new HDD. To cut > along story short Fuji via their agent here > (Productivity Partners Formerly Astro) after
Electronics Forum | Fri Jul 11 10:35:22 EDT 2008 | realchunks
We have an entire Industrial Eng crew that come in 2.5 hours after everyone starts work and leave 30 minutes after everyone leaves (that�s like having 65 extra working days off each year!). In that 30 minutes they take picture of what they think are
Electronics Forum | Thu Feb 12 15:32:15 EST 2009 | gtemkin
A few other data points to consider. My experience working with Dymax 984LVF material was that its UV cure must be initiated immediately after coating, otherwise is surface will remain tacky forever, something like a post-it note tackiness, which wi
Electronics Forum | Sat Mar 14 09:12:59 EDT 2009 | davef
First, there is no good justification for getting solder on gold fingers. Second, it is well known that solder on gold fingers is unacceptable. So, shipping boards with that condition indicates sloppy quality practices at your CM. Third, that being
Electronics Forum | Tue Oct 27 15:53:23 EDT 2009 | smtspecialist
Sr.Tech is absolutely right !!! This is where I had started, by changing all 4 brushes on the motor then I changed the connector since it was turning black (Mydata have a retrofit connector assy for that!, you can do your own also!) After trying thos
Electronics Forum | Sun Nov 08 10:22:52 EST 2009 | doremi
Hi everybody, First of all, to have process under 100% control you should have AOI after every active process in the pcb assembly line : - Post printing (2D or 3D Solder paste inspection machine); - Post reflow; - Post selective(wave solder). It i
Electronics Forum | Fri Mar 19 03:13:35 EDT 2010 | mun4o
Hi, First check what the Moisture Sensitivity > Level of the LEDS is....you may need to ask the > LED manufacturer. Once you've established it is > moisture sensitive then follow latest version of > IPC JEDEC 33 spec. for storage of them and dryi
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