I ordered a couple of samples from TI and was surprised to find one bag of the parts in a moisture-barrier bag with a "Bake prior to vapor or IR soldering to reduce the chances of damage" warning label. The other, seemingly similar, part came in a standard anti-static bag.
REF5040AID - in vapor barrier antistatic bag REF5020AID - in standard antistatic bag
These parts, IMHO, are pretty darn similar considering that only the voltage is different. Is there any special reason one was tagged as needing baking and the other wasn't?
I checked the TI web site for moisture-sensitivity info and the "rating" for both parts was the same:
REF5020AID MSL Level-2-260C-1 YEAR REF5040AID MSL Level-2-260C-1 YEAR
From the TI site: "MSL (Moisture Sensitivity Level): is a JEDEC industry standard classification that defines the length of time products can be safely exposed to the ambient environment prior to high-temperature reflow soldering."
It appears that they are both as sensitive (or not) to moisture, so I'm a bit confused as to why the REF4040AID part was vapor-barrier bagged. Not really important?
Thanks for any help you can give me, John