ES and E marking on NUCLEO-F303RE

Anuprash · ‎2026-05-25

I am using NUCLEO-F303RE board. I couldn't find ES and E marking in the product information of the datasheet. Does it mean it is not "ES" and "E" marked. can any one please confirm it.

mƎALLEm · ‎2026-05-25

Hello @Anuprash and welcome to the ST community,

What do you mean by "ES" in the marking?

Please give an example. What marking do you have on your device? I have a doubt about the answer but I need to be sure ..

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Anuprash · ‎2026-05-25

@mƎALLEm

ES = Engineering Sample
E = Engineering

I have added the snip below, which states ES or E marked cannot be used for qualification activities