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 Oct 02 21:00:26 EDT 2003 | davef
Who says the chlorine comes from your tap water? Our PTOW dumps boat loads of chlorine into our water periodically. Sometimes it's so bad you can smell it. We doubt that it is the source of your problem. This chlorine will volitize very quickly,
Electronics Forum | Fri Aug 11 16:19:39 EDT 2006 | T. Oaks
Hi, We have a issue with current leakage between pins on an SSOP 28 in a low frequency RF application and there is a suspicion that it is being caused by something in the flux residue. We have had the bad boards analyzed and a 'high' Chloride level w
Electronics Forum | Tue Oct 07 14:23:37 EDT 2003 | Adam
The Omegameter (or Ionograph) detect contamination by measuring the conductivity of the solution used to extract the board. This conductivity number reflects the sum of all of the ionics in the extraction solution. Unfortunately, we can't sort out th
Electronics Forum | Wed Mar 06 21:16:17 EST 2002 | davef
�What does 5 micrograms of chloride mean to me?� * With SIR testing, you can show no detrimental leakage currents under humid conditions, no corrosion, no metal migration, which are the big factors in figuring out electrochemical reliability. People
Electronics Forum | Thu Mar 24 02:21:14 EST 2005 | Nifhail
I've heard about the dessicator i.e.useless in sealed bags, ineffectual, but have not heard about the Dryer Indicator will contaminate the immersion Silver/Tin surface. Can someone help? I was told that the dryer indicator (HIC) that contains sulphur
Electronics Forum | Wed Sep 15 06:53:48 EDT 2004 | John
Hi Everybody, Can enybody tell me what is acceptable level of defects for Wave soldering?I know that it's depends of many factors,but I want to benchmark my process. Thank you
Electronics Forum | Sun Dec 17 22:55:45 EST 2006 | foolat
I'd like to know how much capacitor offset from the pad should be acceptable? What are the risks of the placement offset if greater than the acceptable level? I'm still quite new to this so any help will be very much appreciated. Thanks
Electronics Forum | Wed May 23 10:11:43 EDT 2012 | blnorman
Simple answer is no, there is no universally acknowledged acceptance criteria. Some time ago, I started a spreadsheet with the acceptance levels suggested by various labs on the individual ionic species. All are relatively close in their individual
Electronics Forum | Thu Aug 21 09:05:07 EDT 2003 | davef
Use a cartridge that's approved [conform to OSHA 42 CFR 84] to provide respiratory protection against organic vapors, chlorine, hydrogen chloride, sulfur dioxide, chlorine dioxide, and hydrogen fluoride with a P100 particulate filter which is effecti
