I ordered some ADXL345, HMC5843 and ITG-3200 .. all off them are marked as moisture sensitive devices. On the specs they say that they can get damaged after opening the moisture protective bag.. They say that once opened they would have a life of ~ 160 hours..
Is that true? If so, why they don't moisture break when soldered on a PCB?
If once opened the moisture protective bag do you think they could get damaged if I store them in a dry place at 25 degrees C?