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What means the marking code below the part number of this IC?

EFran.3
Associate

I have this IC with the part number 3485EB, found the datasheet but it doesn't explain what this marking code below the part number (M2123) means. What does that mean?

1 ACCEPTED SOLUTION

Accepted Solutions

Assembly/Production Plant and Date Code

Looks more like MZ than M2

https://www.st.com/resource/en/datasheet/st3485eb.pdf

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1 REPLY 1

Assembly/Production Plant and Date Code

Looks more like MZ than M2

https://www.st.com/resource/en/datasheet/st3485eb.pdf

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..