Electronics Forum | Wed Sep 20 19:34:13 EDT 2000 | Dave F
Congrats. You now control the source of almost 70% of the defects of your SMT operation. There is a neat series of presentations on printing, each year at SMI. One of the best of the SMI series was in 1997, because presenters used a common board
Electronics Forum | Wed Sep 01 08:01:09 EDT 2010 | sachu_70
A component placer performance can be kept alive if proper maintenance is carried out regularly. During such maintenance, all functions including component recognoition and illumination levels should be verified and any wear-out part replaced if requ
Electronics Forum | Thu Jan 06 17:56:14 EST 2000 | Brian W.
I agree with Dave that passte volume is the most preferable criteria. However, you need to determine what you will accept and what your process is capable of. You need to define the process parameters, put procedures in place to control them, reduc
Electronics Forum | Tue Mar 19 11:54:08 EST 2002 | davef
FORMULA OTHER THAN LxBxZ? - Paste is X% [X=~50] metal by volume. Your paste supplier knows the value of 'X'. HOW TO ACHIEVE A CONSTANT REFLOW PROCESS CAPABILITY? - Buy a capable oven, operate and calibrate it properly.
Electronics Forum | Mon Aug 19 04:49:10 EDT 2002 | genglish
Can anyone lead me to information on capability studies for SMT Production, I know of several points during production to take relevant readings but is there an industry standard to adhere to and if so what? I have searched the archives to no avial.
Electronics Forum | Mon Dec 30 08:14:45 EST 2013 | jax
I was unaware of any Pb-Free process capable FR-1 laminate... not to mention capable of Though Hole plating that would be expected when wave soldering. What is the Td and Z-expansion for the laminate you are using?
Electronics Forum | Sat Feb 10 09:36:52 EST 2007 | davef
Choices are: * Run a Cp, Cpk capable profiler through the oven. * Review the results of your supplier's process qualification that would include Cp, Cpk on their oven. Handspring contract [REV. 6 - 7/1/99] with Flextronics says: [snip] 4. Process Ca
Electronics Forum | Tue Jul 13 13:30:16 EDT 1999 | Bill Bannister
We are looking to automate the paste printing portion of our SMT process. We are looking at used equipment from DEK and MPM from 1994 onward.(DEK 260 & 265 MPM AP20 & AP27) Does anyone have some feedback or concerns with any of these machines? Does t
Electronics Forum | Thu Jan 31 09:00:15 EST 2008 | d0min0
Hi, we have 4 DEK 265 infinity, all with blue underscreen cleaner (with paper rolls), it doesn't make miracles :) but if you have good solvant system (not too much - you flood the paper and not too small) then works OK on some of our DEKs (y 2000) t
Electronics Forum | Tue Sep 29 17:57:57 EDT 1998 | Ken
I have 2 SMTech Sigmaprint 400s. They are easily the best screen print buy for the dollar. They perform like machines costing 50K more. They are probably the best kept secret in printing. My machines are 16 mil. capable, can be optioned to go bey
