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 | Tue Jun 05 14:38:55 EDT 2001 | pteerink
You would be better served to check your print quality as you run. Any problems caused by dirty stencils ( plugged aps etc ) would show up right away as a defect. Search the forum for more on this subject. I seem to recall the same subject coming up
Electronics Forum | Tue Jun 05 20:45:54 EDT 2001 | davef
So, yer lookin' to detect a ~25um glob on the wall of the aperture on yer stencil, eh? Why not wash your stencils before you put them away? That's what we do. Give 'em a quick looksee, then rack 'em, if they're clean. Give 'em anudda looksee befo
Electronics Forum | Thu Jun 07 16:33:22 EDT 2001 | davef
I too know of no product like you desire, but I have a lead for you to follow that might get you further than you're getting now. Call Lumonics [Lumonics, 130 Lombard St, Oxnard, CA 93030 805.485.5559 fax3335 http://www.gsilumonics.com]. They ma
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 | Tue Jan 23 06:16:13 EST 2007 | Ayelet
Hi, I am lookinh for standards that define the cleanliness level of the assembly room and also for the test and packaging room. I understand that tehre are some defintions of tempertaure and humidity that shoudl be met. Are there any specs for part
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 | Wed Feb 07 07:58:58 EST 2007 | ayelet
Thank you guys. So to summarize - no spec, just need to have decent cleaning... Are you familiar with dust events that caused burning of test stations ? Thanks Ayelet
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 | 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.
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