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Recent content by Ste134

  1. Ste134

    PCB reliability

    It seems that Ea= 0.6eV is a commonly accepted reference value. I have also found a relation showing the acceleration due to RH and it could be another acceleration factor in my tests. A=t_test/t_opearting=(RH_test/RH_opeating)^3* <Arrhenius equation> Where: RH_test= RH during test RH_perating=...
  2. Ste134

    PCB reliability

    Hello and thank you All for feedbacks. Actually, I was not looking for theoretical, school or Wikipedia's material but rather something more operating and real experience-based. I got plenty of materials from Internet but I was asking real field experience and help. We experienced failure in...
  3. Ste134

    PCB reliability

    Hi, I am struggling with life prevision of bare Printed Circuit Board (PCB). The approach is to submit a bunch of PCBs to climate chamber accelerated life 885°C/85%) for a certain amount of time. The problem then is the correlation between such accelerated life time to teh standard/specs...
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