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LM340: LM340AT-5.0/NOPB

SHAWN FONG
Intellectual 490 points
Part Number: LM340

Hi experts,

We bought these from TI E-Store. There were no notifications of any sort on public domain that TI mixes date-code for your products.

Please confirm:

1. if there's notification letter to share.

2, if these are safe to use and

3. if we come across such cases on other part#, should we raise the alarm?

/resized-image/__size/320x240/__key/communityserver-discussions-components-files/196/LM340AT_2D00_5.0-MIXED-DC.JPG

Thank you.

  • 0
    TI__Expert 3995 points

    Shawn,

    The sticker attached shows that this lot was manufacture in our AT site in Malaysia and packed on 9/08/2020. All TI parts are shipped with the sticker as attached to allow us with traceability. You could also look up the symbol on the part which should be as below.

    Regards,

    Prakash L

    Symbol

       Topside Symbol         : NS-NDE3                                           
         +--------------------+       E0     = ECAT                                    
         !                            !         \NS/ = NATIONAL LOGO                           
         ! \NS/YMLLLLPE0     !         YM = YEAR MONTH DATE CODE                                               
         ! LM340AT              !         LLLL = ASSY LOT CODE                           
         ! 5.0 P+                 !                      
         !                            !                            
         !                            !                                                        
         ! O                         !                 
         +--------------------+                         
          O - PIN 1(NOTCH ON PKG)                        
                                             
  • 0 in reply to Prakash Lakhit
    Intellectual 490 points

    Hi Prakash, thanks for the explanation. However the point I want to make here is there's 2 D/C observed in a reel.
    Is this a common practice in TI?



  • +1 in reply to SHAWN FONG
    Intellectual 270 points

    Shawn, 

    When reels have more than 1 DC they will be listed in the "ITEM:" area in YM format. 

    REF:

    /cfs-file/__key/communityserver-discussions-components-files/196/How-to-identify-STC-_2600_-LTC.PDF