Electronics Forum | Wed Feb 07 21:58:38 EST 2001 | davef
We are reviewing our shelf life policy and have the following items listed as shelf life sensitive: Printed circuit boards, peelable solder mask, solder paste, moisture sensitive parts, multiwire printed circuit boards from Icon or Hitachi, NiCd batt
Electronics Forum | Mon Jul 23 17:49:04 EDT 2007 | davef
We know nothing of DeFelsko, but do understand how they distinguish between the solder mask and the conformal coat. DeFelsko manufactures hand-held, non-destructive coating thickness gages that are ideal for measuring the dry film thickness of confo
Electronics Forum | Thu Apr 13 21:02:37 EDT 2000 | Mario Carluccio
Can anyone advise me what are the types of contaminants which can be present on a printed circuit board at the very beginning of a SMT line. Of these contaminants, are any of them detrimental to the SMT process (i.e. label application, or solder pas
Electronics Forum | Mon Feb 14 17:10:35 EST 2000 | Nick Harris
I am looking for any information out there concerning cigerette smoke and it's effects on Printed Circuit Board Assemblies. If anyone knows of any studies or articles on this subject I would appreciate your help.
Electronics Forum | Wed Dec 13 13:42:57 EST 2000 | Mike Ihm
The dielectic absorption characteristic of printed circuit board materials is usually not listed on the manufacturers spec. sheets. Can anyone point me in a direction to help determine which laminate materials might exhibit better dielectric absorpt
Electronics Forum | Thu Oct 19 09:39:53 EDT 2000 | NLykus
Great information. Your all right in my book "Dave F". Thanks for your help. Will redesign D.O.E. with more refined profiles for the different materials and let you know how it goes. Take care N. Lykus
Electronics Forum | Thu Jul 27 21:48:10 EDT 2000 | Dave F
Bob: According to the Defense Automation and Production Service ... MIL-I-46058C, Insulating Compound, Electrical (For Coating Printed Circuit Assemblies) went inactive on 30-Nov-1998
Electronics Forum | Wed Jun 28 07:07:52 EDT 2000 | David Smith
Can anybody help me with finding information on the mechanical properties of PCB materials, particularly with reference to vibration analyses. Thanks
Electronics Forum | Mon Apr 02 09:42:35 EDT 2001 | davef
Check "Chapter 5: Punching Grade Of Copper Laminates" by RJ Konsowitz in "Printed Circuits Materials Handbook" edited by MW Jawitz
Electronics Forum | Mon Dec 18 18:14:20 EST 2000 | Dave F
In older resin materials used in printed circuit board fabrication, there seemed to be a direct relationship between CTE and Tg. Now with more modern resins that reationship no longer appears clear. Please comment.
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