solder cracks

  1. Younes Thabet

    What can happen to a PCB burnt during hot air soldering?

    Hello all, I was soldering an SMD component and I accidentally used a higher temperature and airflow to solder it so I burnt the PCB and a bubble appeared around the area as seen in the image below. Is this bad? will this issue affect the functionality of the PCB? What can I do to fix this...
  2. A

    Need opinion about CTE mismatch on PCB

    Hi guys, Recently I encountered a solder crack issue on my PCB and was wondering if anyone else has ever encountered such (I am sure someone here would have). The problem is caused by an IC which has 48pin TSOP package, possibly with an alloy42 lead frame (CTE = 5 ppm/degC). Cause of...
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