Electronics Forum | Thu Jul 03 17:29:42 EDT 2008 | mikesewell
Re: item 3 - there are ultrasonic thickness machines (Panametrics makes one) that can measure coating dry with a small transducer head. A little pricey for ones that measure reliably in the .003" +/- .002" range.
Electronics Forum | Wed Jul 02 02:46:44 EDT 2008 | tang
Hi Guys, I have few question would like to ask regarding pcb conformal coating: 1. Can I know which masking material is the best for easy apply, fast cure, fast & easy to remove after coating & baking. And no chemical reaction which will whiten the
Electronics Forum | Fri Apr 21 17:46:29 EDT 2006 | SD
First of all, do not use kapton tape! It tends to cause a dewetting effect around the tape. A call to Humiseal will explain why. There's not really a blanket answer to your question.... Removing cured liquid mask can often result in a fillet ef
Electronics Forum | Wed Dec 01 15:53:59 EST 2004 | davef
uV light inspection indicates the "completeness" of coverage, but provides no measurement of coating thickness.
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 | Sat Sep 08 08:55:24 EDT 2007 | davef
We expect to see a copper shadow along the edge of pads when soldering boards with organic solderability protection [OSP]. IPC-A-610 has defined this as acceptable for years. During early reflow stages, the flux in paste dissolves the OSP where ther
Electronics Forum | Mon Apr 17 14:43:35 EDT 2017 | davef
Measurement of Conformal Coating thickness on Printed Circuit Boards [ http://www.defelsko.com/applications/conformal-coating/printed-circuit-boards.htm ] I receive no benefit from the supplier mentioned above. IPC-HDBK-830A, 8.11.1 talks to measu
Electronics Forum | Mon Sep 21 20:45:55 EDT 2009 | davef
10.4. Pre-Cure Examination. Immediately after material application, the uncured conformal coating shall be examined for: a. Bubbles and Air Entrapments. These defects shall be broken by vacuum, with a sharp probe, or other appropriate tools. b. Bridg
Electronics Forum | Wed Dec 17 09:41:24 EST 2014 | dragonslong
1 x 10^10 ohm. Can i use the same specs? 2) Similarly, do anyone have a guide of the pass/fail criterion for the DWV measurement for parylene on IPC-B-25A board? I had check the Mil-I-46058 test standard which had a pass/fail criterion of
Electronics Forum | Fri Jul 20 16:43:25 EDT 2007 | mleber
Does anyone have any experience with DeFelsko Corporation thickness measuring equipment for conformal coat? I am looking for a quicker more accurate way of checking our coating process.
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