Electronics Forum | Fri Nov 10 15:53:48 EST 2006 | Hussman
Tonto? You�re either calling me a fool in Spanish or in my native tongue (Potowatomie) calling me "Wild One". I trust Kemosabe is talking my language.
Electronics Forum | Wed Nov 15 00:42:43 EST 2006 | Jp
I tend to agree with process science's rec. They are currently doing a board with stacked BGA, and the board is around 18 by 18. Good luck.
Electronics Forum | Tue Nov 14 00:09:33 EST 2006 | KEN
I would still verify what you are receiving and your current bath setup. This only because you are experiencing problems. Simple check, takes 2 minutes. I have seen this before, but it took 8 hours to delam at with pre-mix. This was 5 or 6 years
Electronics Forum | Wed Nov 22 11:06:59 EST 2006 | stimpk
We had the same issue. Switch to the 440-R and remove your heat. Your wash cycle can be changed down to 2 minutes. Make sure to mix the correct amount, and you want have anymore delam's. Kevin S
Electronics Forum | Thu Nov 09 16:38:26 EST 2006 | Julie
Our SQE's want to benchmark the first pass yield requirements that we place on our CM's - currently they are at 95% - does this seem reasonable?
Electronics Forum | Thu Nov 09 17:54:54 EST 2006 | russ
I would trust that you are benchmarking some design rules as well? Yield is directly related to design as well as process capability. anyway 95% is not a bad first pass yield at all, and I would tend to think that that is a little high when dealing
Electronics Forum | Thu Nov 09 20:11:58 EST 2006 | darby
Very much agree with Russ, Are your CM's doing final test and assembly? If so I would think that 95% is in the ballpark. If not, very much product dependant.
Electronics Forum | Thu Nov 23 09:41:36 EST 2006 | Jon
The DPMO is a far better measure - first pass yield doesn't give you any indication on quality or effectiveness of test step. If you want 100% first pass yield, test nothing - works every time - you see where I am coming from..........
Electronics Forum | Thu Nov 09 20:01:12 EST 2006 | AB
What are the pros and cons between type 3 and type 4 no clean solder paste (SnPb)?
Electronics Forum | Sat Nov 11 07:54:53 EST 2006 | davef
Many use the following guideline when judging the proper paste for a stencil aperature: You want approximately 5 particles minimum across the smallest aperture.
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