Want to know shelf life of STM32F071VBT6TR MCU

[Gajanan91]

What is shelf life of STM32F071VBT6TR MCU ? How long I can store it in my warehouse before assembling it on PCB ?

[Andrew Neil]

In the Datasheet:

Searching the ST site for, "ECOPACK" finds, among others, AN2639:

Soldering recommendations and package information for Lead-free ECOPACK MCUs and MPUs

https://www.st.com/content/ccc/resource/technical/document/application_note/25/2e/9e/a6/a6/b4/41/f4/CD00173820.pdf/files/CD00173820.pdf/jcr:content/translations/en.CD00173820.pdf

The big thing is moisture absorption - see Chapter 6. 

[Billy OWEN]

Hi @Gajanan91 

@Andrew Neil  was on the right track and that is a great appnote on the subject.

However the moderator had marked this thread to be escalated to the ST Online Support Team for additional assistance. 

I'll contact you directly in just a few.

Regards,

Billy

[Gajanan91]

So here I consider that important factor is MSL level of the device, its packaging (Material Barrier Bag) and environment in which device is stored.

The MBB remains unopened and HIC has not changed its color., Please confirm.