Electronics Forum | Fri May 05 08:42:08 EDT 2006 | Chunks
This used to ba a hot topic years ago. But surface mount equipment does not need to be in a clean room. Your product may need to be , which would drive toward a "standard". Some people assume that "clean room" mean "high quality". Next time hav
Electronics Forum | Mon Feb 27 17:08:15 EST 2006 | GS
3,5 ugr/cm2 NaCl) or power components, or Raw PCB. Nothing with the solder process or fluxes. Ion Chromatography analysis was necessary to help understanding of contamination origin. When occasionally we run TIC on a NC assembled PBA (Paste ROL0 or
Electronics Forum | Wed Sep 24 12:58:49 EDT 2008 | wavemasterlarry
I here china has bad air quality, so if in china this may be your problem.
Electronics Forum | Tue Sep 23 18:55:59 EDT 2008 | smt_guy
"Ionization of the air causes an increase in conductivity..." I have an Ionograph and everytime I open the test lid cover the Baseline Stabilization Resistivity Value s by 60M Ohm-cm. My question is: Is there something to worry about our facilities
Electronics Forum | Wed Sep 24 13:49:27 EDT 2008 | slthomas
Is your air dirty or what? I'm not sure what you're asking, actually, but for my money I'd be more concerned with maintaining RH levels at from 40-60% and just keeping dirt levels "reasonable".
Electronics Forum | Fri Sep 26 16:34:16 EDT 2008 | aqueous
Its not likely your air quality that lowers the test solution's resistivity. Maintaining 60 M-Ohm requires almost constant circulation through DI resin beds. Just natural CO2 (Carbon dioxide) absorbed by the test solution will lower the resistivity
Electronics Forum | Wed Sep 24 17:01:04 EDT 2008 | davef
We use a Charge Plate Monitor (CPM) tp monitor the balance of our ionizers, according to ANSI ESD STM3.1. Maybe you could use a CPM to assess the ionizing radiation in your plant. The more we think about it, we feel you could use a Geiger-Mueller (G
Electronics Forum | Fri Sep 26 12:23:23 EDT 2008 | stepheniii
How do you get your X-ray machine checked out? We had the tube replaced and they checked it then otherwise we would have the same guy we had in last year to check it out. But in any case we have a radiaton survey done at least once a year. I assume
Electronics Forum | Thu Dec 09 10:40:45 EST 2010 | grahamcooper22
MSL 3 means you can have the devices open for a maximum of 168 hours in an atmosphere of less then or equal to 30 C and 60% RH. If the humidity is less then 60% then it means the devices will absorb less moisture in a given time, but even at 40% RH y
Electronics Forum | Wed Sep 10 12:56:26 EDT 2008 | vladig
No arguments there. I 100% agree that quality engineers can and do solve a lot of problems on the spot. I've nevern said "run an analysis as soon as you get a problem". The whole nine yard started with a solderability problem. In my previous product
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