Electronics Forum | Wed Mar 23 10:16:47 EDT 2011 | blnorman
If these are moisture sensitive they are required to be shipped in a moisture barrier bag and labeled as moisture sensitive. Depending on which moisture sensitivity level (MSL) the components have, floor life can range from unlimited to a mandatory
Electronics Forum | Wed Sep 23 13:20:02 EDT 2015 | emeto
Depends on the MSL(Moisture sensitivity level) and how far you will use them in production. Here you should be able to get all the answers: http://www.jedec.org/sites/default/files/docs/jstd033b01.pdf
Electronics Forum | Thu Apr 14 09:45:58 EDT 2016 | emeto
Why don't you fix the PCB flatness instead? If that is not the problem, I will check the part warping during the reflow process.If the part is large as you mentioned, it probably warps a lot during reflow. Try to bake the parts in front,based on MSL
Electronics Forum | Thu May 12 13:26:31 EDT 2016 | kahrpr
Hi Are we talking about a BGA or a resistor. Knowing the type of part would help.
Electronics Forum | Tue Apr 19 17:34:34 EDT 2022 | dwl
Be careful of MSL level 4 or higher devices on the first side. if they sit out 3 days, they will need to be baked before second side reflow or you risk component damage.
Electronics Forum | Tue May 31 10:58:23 EDT 2011 | killa12356
This is probably a stupid question but how come it is so hard to find moisture sensitivity levels from some manufacturers. Data sheets don't show this information.Is there any easy way of finding this out other than contacting the manufacturer or doi
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 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 | Wed Dec 08 09:53:23 EST 2010 | fönsi
Hello Because of the cold weather, we had some troubles with drying out of printed solder paste on the pcb's. The relative humidity in the air declined below of 20%. We have a process window of store the printed board for maximum 24 hours, but with
Electronics Forum | Mon Jun 06 14:21:14 EDT 2011 | rwyman
A reputable supplier will identify the level CLEARLY on the packaging and in the datasheet as well. If they are KNOWN to be MSDs, I'd be suspicious if they aren't marked. Or, they may not be MSDs. I don't think it's required to ID them as "M1" if n
