Electronics Forum | Sat Feb 10 09:29:08 EST 2007 | davef
NASA requirements may be a good starting point http://www.hq.nasa.gov/office/codeq/solder.htm
Electronics Forum | Wed Oct 18 16:33:26 EDT 2000 | Dave F
Mike: An omega meter has very little to do with ion chromatography. * IPC TM-650, 2.3.25B, Detection and Measurement of Ionizable Surface Contaminants is a process control method that washes boards with an isopropanol / water solution and measures
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 | 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 | 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 Jan 23 10:15:44 EST 2007 | slthomas
J-STD-001C just requires that the area not be so dirty as to contaminate your product, tools, workspace, etc. If you start counting particles, you're into cleanroom territory. Do a search on ISO 14644-1 for specifics. Actually Wikipedia does a ni
Electronics Forum | Thu Feb 12 11:57:59 EST 2009 | jmiller
i have searched the forum for hours. read all the threads that deals with cleanliness and ionic testing. (http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=40295) (http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=22603) (http://www.
Electronics Forum | Mon Feb 05 10:12:32 EST 2007 | slthomas
The use of booties isn't required per se, just considered a standard step necessary to reach the 10,000 target. You also need to vacuum (central vac system, NOT exhausting into the room) daily, mop weekly, have a one piece floor, blah, blah, blah....
Electronics Forum | Mon Nov 02 22:04:30 EST 2015 | davef
An ionic contamination tester should meet industrial cleanliness specifications including MIL-STD-2000A, MIL-P-28809, J-STD-001 and Resistivity of Solvent Extract (ROSE) Test Method IPC-TM-650 2.3.25
Electronics Forum | Sun Oct 17 03:36:55 EDT 1999 | Brian
Obviously, clean enough :-) I don't think I've ever seen a specification, although some companies obviously have in-house ones. It would depend on the process used. For ex., if you used Parylene, where the coating is done in a vacuum chamber, you wou
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