Hi,
Please help to advise the mean of the silk-screen as below picture:
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Hey Zhang,
The silk screen gives the part number and some identifying information. If you are asking about certifying the legitimacy of the part, were these devices purchased from an approved TI vendor? If so you can follow the steps at the link below:
https://www.ti.com/support-quality/quality-policies-procedures/anti-counterfeit.html
Best,
Jerry
Hi Jerry,
We consider to know the silk screen information to introduct to our end customer, so please advise if there are any document, thanks,
Zhang,
The topside marking is for internal use. The main properties are the part number for LM358A and the G4 that denotes material.
Best,
Jerry