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ADS1672IPAG stop work after burin in

Oleh Kernytskyy2
Prodigy 20 points

We have 24 ADC p/n ADS1672IPAG on one PCBA, and one of them stop to work after approximately 10 minutes burn in inside test inside of closed enclosure. Board replacement by another known good one resolve the problem. How to determine what may cause it? Any specific requirements to Lead Free soldering profile? Any thermal protection inside of ADS1672IIPAG? Shoud we resolder suspisious IC to determine if soldering cause it defect? Or should we replace it by known good one? We already have 3 boards with this defect type.

  • 0
    TI__Mastermind 23235 points

    Hi Oleh -

    There aren't any specific requirements for the reflow.  We adhere to the international Standard JEDEC 020D.1 and then the solder paste you are using will dictate the reflow to correctly solder the part.

    If you feel the part has been damaged, we can potential pursue a submission to Failure Analysis for an official report.  If you feel it is more a solder issue or EOS, then you can just retry and test the part again.