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TLIN1028-Q1: Could you tell us the standard or recommended with welding spec of the bottom pin with C-groove hole of this IC, thanks.

Carol.li Carol.li
Prodigy 65 points
Part Number: TLIN1028-Q1

Tool/software:

Could you tell us the standard or recommended with welding spec of the bottom pin with C-groove hole of this IC, thanks. 

  • 0
    TI__Guru 74252 points

    Carol,

    Typically our customers use standard reflow soldering for all of our devices, based on the MSL level of the device. This will work for the VSON package of this device with the curved lead footprint.

    Regards,

    Eric Hackett 

  • 0 in reply to Eric Hackett
    Prodigy 65 points

    Hi Eric,

    we want to know the soldering spec for the C-groove hole,  Is the depth filling  for the C-groove hole must be100%? could you tell us the spec， thanks.  

  • 0 in reply to Carol.li Carol.li
    TI__Mastermind 26806 points

    Carol,

    There is not a minimum percentage requirement for establishing an electrical connection, however, the purpose of these wettable flanks/notches in the package are to enhance the effectiveness of automated optical inspection devices when evaluating solder joints. Without these notches, it can be difficult for poor or missing solder joints to be detected during optical inspection. To fix this, the groove you highlighted allows the inspection process to determine whether solder is present by checking to see whether the groove is visible. If visible, it could be an indication that the solder connection is not reliable.

    Though not the exact same package, there is a document that might help give even more context about soldering these types of packages. See here: https://www.ti.com/lit/an/slta069c/slta069c.pdf

    Best,

    Danny

  • 0 in reply to Danny Bacic
    Prodigy 65 points

    Hi Danny,

    thanks for your reply, the reply is useful for us , thanks again. 

    Carol