LM4990: Date code and Country of Origin on top marking

Michael Cheung

Prodigy 50 points

Part Number: LM4990

Hi Sir/Madam,

Part# LM4990MH/NOPB

Please help to confirm the date code and Country of Origin on following top markings:

If "year" cannot be confirmed, please kindly advise the "month" or "week" if available.

Thanks!

Best Regards,

Michael

over 2 years ago

0 Ivan Salazar over 2 years ago

TI__Guru** 102545 points

Hi Michael,

I'll need to check this information with some other internal teams, this is a legacy part.
What is this information needed for? Is this part of an FA request?

Best regards,
-Ivan Salazar
Applications Engineer

0 Michael Cheung over 2 years ago in reply to Ivan Salazar

Prodigy 50 points

Hi Ivan,

We would like to see how old is the part and may apply solderability test before use due to old date code.

Thanks!

Best Regards,

Michael

0 Ivan Salazar over 2 years ago in reply to Michael Cheung

TI__Guru** 102545 points

Hi Michael,

Thank you for the additional information, I'll try to get some feedback about the top markings early next week.

Best regards,
-Ivan Salazar
Applications Engineer

0 Ivan Salazar over 2 years ago in reply to Ivan Salazar

TI__Guru** 102545 points

Hi Michael,

After thorough discussion with our team internally, I have some feedback:
Unfortunately we cannot disclose date code decoding with our customers as this information is protected. This is used internally only for tracking when quality jobs are reported.

So based on this, I think you should either test all the units or none of them; we cannot provide information for each sample to decide if you test it or not.

Best regards,
-Ivan Salazar
Applications Engineer

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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LM4990: Date code and Country of Origin on top marking