Electronics Forum | Thu May 12 10:49:27 EDT 2016 | Bill Albright
If an electronic component with a MSL rating of 1 is exposed to an moist environment greater than the 85% relative humidity to the point where the packaging is wet, what is the risk level of using the device in a lead-free soldering reflow process?
Electronics Forum | Fri May 13 17:28:43 EDT 2016 | dyoungquist
Depends a little on how long it was exposed to the wet environment as moisture absorption by electrical components is a very slow process. That said, MSL 1 rated components can be exposed to high humidity indefinitely and still not need to be baked.
Electronics Forum | Fri Mar 02 10:20:24 EST 2012 | caerleon
Yes i am trying to install controls. The MSL classification for a part is defined in JSTD033B which i have. I need to update all 5000 plus parts on my MRP system with the correct MSL level (we will be audited on it by BSI). I know that manufacturers
Electronics Forum | Mon Mar 08 14:39:54 EST 2004 | Gabriele
Have you considered those Tant Caps could be moisture Sensitive Components ? During last year, several Brand Suplliers classified their Tant Caps as Moisture Sensitive Level 2a (4 wks out of dry pack before reflow, see J-STD-033a) some even MSL:3
Electronics Forum | Fri Mar 19 18:59:34 EST 2004 | mikeandrus
We have the same problem here. MSL varies for the same component from different sources. It can also change throughout the lifecycle of a component from a one manufacturer. All the literature and the wonderful software solutions assume you have
Electronics Forum | Wed Feb 28 10:27:55 EST 2007 | Rob
Hi John My understanding of your post is that you are asking if anyone has tried to enforce MSL levels or reflow parameters onto the component vendor/manufacturer. Is this your question or am I mis-interpriting it? If that is the case you will not
Electronics Forum | Fri Aug 22 13:55:24 EDT 2008 | jdumont
We have used the Cogiscan system successfully here for 3 years or so now I think its been. I couldn't possibly imagine tracking MSL's on a lot of parts by hand... and being able to trust your numbers. This software will track everything for you and a
Electronics Forum | Fri Jul 15 05:27:59 EDT 2016 | salini
Thanks for the suggestions..will ask my RnD team to introduce such procedures which can replicate the points you have mentioned. We have initiated to implement the MSD devices proper handling in our factory premises so that field rejections which ar
Electronics Forum | Thu Mar 16 22:19:38 EDT 2017 | deanm
First, reflow does not reset the clock for MSL exposure. The best solution is to run the second side before the exposure time expires. I am curious to know why they must sit for 40 hours. If that cannot be done, then store the assemblies in a dry c
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
