Electronics Forum | Mon May 26 08:02:11 EDT 2003 | davef
Resistance: Tables of wire gauge often provide a resistance measure of some kind for each gauge. That way we can estimate the resistance of any length of wire we might be interested in. Calculating trace resistance is only slightly more complicated.
Electronics Forum | Mon Jun 05 14:09:36 EDT 2000 | Jason
We would like to gauge or precentage of production line failures to industry standard AQL level. What would be an acceptale AQL level for assembled pcb's or finished units leaving the factory?
Electronics Forum | Mon Jun 21 15:00:41 EDT 1999 | jgodfrey
I am finding that some of our IC's are coming from the supplier with the humidity gauge in the bag reading 10-20%. Has anybody done any tests to determine what humidty level in a package will cause problems during reflow?
Electronics Forum | Thu May 06 19:25:41 EDT 2021 | markhoch
oooff... be careful of punch dies. They leave a lot of debris and can stress components on the PCB. If you're using them, be sure to verify stress levels with a strain gauge test. Semi-fractured components can pass test, yet eventually cause latency
Electronics Forum | Fri Sep 11 12:08:10 EDT 2015 | derrikf
I built one using an old Asymtek Automove. When all was said and done, it cost less than $400, including what was paid for the machine itself. It's a very basic setup, (air over syringe), but for our needs it does everything and more. With air to syr
Electronics Forum | Tue Jun 17 12:38:33 EDT 2008 | john_smith
We are also using Vapor phase for our process. We currently have 6 profiles that we have established. 3 for Leaded and 3 for Leadfree. We have set-up our profiles depending on the mass of the board. We do have some tombstoning depending on several va
Electronics Forum | Fri Jun 11 21:17:46 EDT 2010 | whitewing
I was wondering how hard it would be to make a homebrew vapour phase oven, to avoid the problems with very cheap conventional batch ovens, in particular uniformity. I've seen a reference here to a pasta cooker VP setup, but the image link is dead no
Electronics Forum | Mon Jun 21 16:11:41 EDT 1999 | John Thorup
| | I am finding that some of our IC's are coming from the supplier with the humidity gauge in the bag reading 10-20%. Has anybody done any tests to determine what humidty level in a package will cause problems during reflow? | Usually a proper m
Electronics Forum | Wed Jun 05 17:14:40 EDT 2002 | davef
First, I suggest that people search the SMTnet Archives in just about every response that I make. Second, you need to work on your DOE jargon * Factors. Independent or input variables * Effects. Results. Dependent or output variables. Third, the
Electronics Forum | Thu Jul 01 10:24:31 EDT 2004 | davef
There is no specification for �Ion Chromatography for Ionic Cleanliness�. The performance of your product in your customer use environment determines the level that you select. The good part for you is that have at least one pole that you can put i
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