Electronics Forum | Sun Mar 03 11:24:14 EST 2013 | davef
Windhorse and o.k. I have pdf of both papers, but don't yet have a release from the authors to republish them. BR, davef
Electronics Forum | Wed Mar 06 14:58:49 EST 2013 | davef
Solder mask thickness requirement is defined by the procurement specification. There is no written solder mask thickness as a standard. Some of say evaluate it with 500 VDC. It depends on withstanding voltage. BR, davef
Electronics Forum | Tue May 07 07:31:15 EDT 2013 | davef
Pavel You're correct that you should consider the point loading of your placement, wave and other machines. I've put shops above the ground floor of buildings. Equipment suppliers are the best source of information about these requirements. BR, dav
Electronics Forum | Wed May 08 20:14:24 EDT 2013 | davef
What happens when you rework those non-coated areas? Please list your rework steps Br, davef
Electronics Forum | Fri May 17 14:56:21 EDT 2013 | davef
There's not supposed to be any effin 'drain hole.' Where's you get that from? Read this: http://blogs.smtnet.com/smt/other/qfn-btc-design-guidelines-thermal-pads-etc/ BR davef
Electronics Forum | Tue May 21 09:13:23 EDT 2013 | davef
Senor Tech: Used equipment resellers that support SMTnet are: * IBE SMT * Precision Placement Machines * Capital Equipment Exchange * Robo-Tek * Xline Assets * GoDove * Adopt SMT * JMW Inc * Baja Bid BR, davef
Electronics Forum | Thu May 23 18:10:54 EDT 2013 | davef
I agree with Rob. These solder connections are unacceptable. BR, davef
Electronics Forum | Mon Jul 01 15:40:12 EDT 2013 | davef
Walter: The things I'd look at first are: * Temperature of the water wash. I expect the solution to be in the 140-150*F range [Check with your flux supplier for recommended temperatures] * Temperature of the boards when entering the cleaning process.
Electronics Forum | Sun Sep 08 18:19:58 EDT 2013 | davef
Not quite what you're asking, but try OEE as your metric http://www.smtnet.com/index.cfm?fuseaction=search_submit&searchstring=oee&collection=site_forum BR, davef
Electronics Forum | Thu Sep 05 22:01:55 EDT 2013 | davef
Questions are: * How did you determine that the coating on your component leads is oxidation? * What is the oxide? BR, davef
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