TL072A: TL072ACDR different marking code have different outputs.

Kevin Huang8

Genius 5261 points

Part Number: TL072A
Other Parts Discussed in Thread: TL072

The PCBA low-Pass test failed,Marking 072AC TI31M OA5RE is OK, 072AC TI 39K CJ08 is NG,

Different marking codes result in different outputs. Is this related to different date codes?

TL074 AP.jpg

TL074 stk.pdf.png

TL074 photo.png

4 months ago

0 Chris Featherstone 4 months ago

TI__Mastermind 31635 points

Hello,

This is likely related to the product change notification that went out indicating a design change for the TL072. Do you have the shipping labels for each part that are on the boxes that these parts shipped with? If so, can you provide the shipping labels for each?

Best Regards,

Chris Featherstone

0 Kevin Huang8 4 months ago in reply to Chris Featherstone

Genius 5261 points

Hi Chris,

Only keep the NG label sticker.

0 Chris Featherstone 4 months ago in reply to Kevin Huang8

TI__Mastermind 31635 points

Hi Kevin,

Thank you for the information. I do not fully understand the plots that you shared above. I see you are using the audio precision. Can you tell me what the curves are telling me and what the red and blue lines are? Also I am not able to determine what makes the top curve good and the bottom curve bad. If you can provide more detail on these measurements it can point me in the right direction.

Best Regards,

Chris Featherstone

Amplifiers

Amplifiers forum

TL072A: TL072ACDR different marking code have different outputs.