Electronics Forum | Mon Jul 16 12:03:42 EDT 2007 | davef
We're aware of no industy acceptance standard for max moisture content of a board. For more on moisture levels, get a copy of: "Removing Moisture from Electronic Components and Assemblies", CS Leech, Jr, Circuits Assembly, May 1994. The article disc
Electronics Forum | Tue Jun 27 08:08:23 EDT 2000 | Christopher Lampron
Hello All, My question is in regards to repackaging moisture sensitive components. I have researched the archives and found alot of valuable information. We currently have a heat sealing machine but do not have the capability of evacuating the bag pr
Electronics Forum | Mon Dec 31 09:00:06 EST 2001 | davef
Baking before assembly does nothing good. It: * Increases costs. * Adds steps to the process and makes scheduling more cumbersome. * Increases the amount corrosion on solderable surfaces. We used to bake to remove the moisture from boards that caus
Electronics Forum | Tue Oct 19 22:43:31 EDT 1999 | Stu Leech
We are deeply involved with this question because we have developed a much faster way to remove moisture from PCB's. PCB's absorb varying amounts of moisture at differing rates. The rate is influenced by the laminate type board configuration , loca
Electronics Forum | Tue Aug 19 12:15:37 EDT 2003 | D Peter
Again, that is for packaging, rather than moisture removal or storage. Those guidlines are for several reasons, preventing low pressure outgassing or disassociation of the dessicants, damage to parts or wafer tray due to forces on the evacuated pack
Electronics Forum | Thu Jan 25 12:02:20 EST 2018 | deanm
When leaving a job set up on pick and place machines, it is important to return any moisture sensitive devices on reels to a dry cabinet overnight to reduce the exposure time. What are some ways to identify which reels need removed? A sticker placed
Electronics Forum | Tue Aug 19 09:48:07 EDT 2003 | D Peter
No, we don't have nitro. We may go that way if we can't find decent data from anyone other than the food industry on vacuum drying. I'm just more comfortable with low water/O2 content by removal rather than displacement.
Electronics Forum | Thu Aug 21 16:00:31 EDT 2014 | davef
This links to a NPL presentation on moisture removal from PCB http://www.npl.co.uk/upload/pdf/20140318_effect_baking.pdf Consider: * Focusing on preventing moisture contamination of boards, rather than removing moisture * There will be no standard
Electronics Forum | Wed Sep 14 07:30:57 EDT 2005 | davef
What is a soak test? Do you mean a recipe for removing moisture from a board?
Electronics Forum | Wed May 03 16:37:10 EDT 2017 | charliedci
I don't believe there should be any issues with the HASL finish. The issue is how long on the shelf and is a bake out required to remove moisture from PCB, as in any FR4 PCB's that may have had time to absorb moisture.
