Hi Steve,

I had a similar issue with AVX capacitors. There were lots of defects
during electrical testing and some weird things going on during
soldering (parts that were placed close to the edge of these caps were
blown away!). After complaining at AVX they told us that these parts
were moisture sensitive. There was no indication of it in the data
sheets, and the label didn't mention it either. After lots of
discussion they agreed to put a notification on their labels about
storage and processing, but they refused to adhere to the IPC/JEDEC
standards on which I based my internal procedures. Now we are treating
these parts as MSL 3.
My general procedure is that if a part is not a BGA, QFP or something
that comes in a tray, and there is no MSL-label on the box, it may be
assumed that the part is not moisture sensitive. We need to keep it
workable....

Best regards,

Daan Terstegge



> 
> Like I said earlier, components that I thought that weren't moisture
> sensitive, seem to be now.
> 
> Some of that could be my lack of awareness. I thought that large QFP's,
> PLCC's, PGBA's,
> some thin plastic packages, etc., were the ones that one needed concern. It
> really suprised
> me today to learn that tantalum capacitors are classified as MS componets
> 
> It seems now that ALL plastic packages need scrutiny as far as MS levels are
> concerned.
> 
> This is going to be quite a task. This means that each manufacturer will need
> to be contacted,
> for each plastic part, if we are to truely comply with MS handling
> requirements.
>

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