Electronics Forum | Fri Feb 13 16:13:20 EST 2009 | jax
Many shops require levels for typical component packages on FR-4 or a like substrate to be 2, 9, 15, 1 and 10 mg/in2 for fluoride, chloride, bromide, nitrate, and sulfate respectively. These levels can change for Medical or Automotive.
Electronics Forum | Tue Aug 16 09:37:58 EDT 2011 | blnorman
Dye and pry is frequently used on BGAs to determine if there is a crack at the board level or component level interconnect. C-SAM will show internal delaminations of components, not sure how well it would work with solder joint cracks. You can also
Electronics Forum | Mon Apr 09 11:39:32 EDT 2018 | emeto
The easiest way to do without special tools is to use level. Check machine co-planarity on the conveyor rails in both directions(you can do that with rails down or rails up or both). Then check co-planarity on the stencil. If the level shows the sam
Electronics Forum | Fri Feb 02 11:24:13 EST 2007 | vze3nk2r
is there a level above 100,000 that does not require the use of booties for general assembly work?
Electronics Forum | Mon Apr 09 22:40:38 EDT 2018 | jacobidiego
What kind of level have micrometer precition?
Electronics Forum | Thu Mar 10 23:26:46 EST 2005 | timekey
Of course a new machine out of the box should perform at a realistic Sigma level and it's not unfair to hold a machine manufacturer true to their claims. However, even if a new machine does meet the criteria on day 1, the numbers will be constantly c
Electronics Forum | Sat Feb 14 08:21:13 EST 2009 | davef
We believe that it's perfectly resonable for you to define the cleanliness that you require. We recommend that you leave it at that and not define the process or materials that your supplier use in meeting that cleanliness level. Start with a dirty
Electronics Forum | Mon Aug 15 18:42:53 EDT 2011 | bandjwet
Does anyone have experience in doing dye and pry analysis on PoPs? A customer wants to know whether or not the board level or device-device interconnect is the suspect. What other technique can anyone recommend? BWET
Electronics Forum | Wed Apr 11 21:00:54 EDT 2018 | jacobidiego
What I mean is.... What Brand and Model should I buy to measure coplanarity between this 2 surfaces that could measure micrometers of difference I think that normal bubble levels are not precise enought for this use ^^
Electronics Forum | Tue May 23 12:18:25 EDT 2000 | mike weekes
Which companies would you consider for protective coatings, (conformal coating) and other levels of protection? I am taking a fresh look at alternatives. Know any good tests for testing compatability of coating with flux - aqueous or no clean? SMT
