PowerFlex 70, 700, 4, 40
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      3. PowerFlex 70, 700, 4, 40

      Why does my PowerFlex 40 fail after power has been cycled.

      The information gives possible reasons why a PowerFlex 40 may be failing after a power cycle.

      Excessive Heat Exposure can damaged critical parts of the PowerFlex 40 Drive
      • PCB Material: The PCB material used in the PF40 product is rated for heat stress at 105 degrees C. Discoloration subject to occur starting above 110C

      Why does my PowerFlex 40 fail after power has been cycled.

      • Nylon Stand offs: This material rated for heat stress at 85 degrees C. Discoloration is subject to occur above 90C.

      Why does my PowerFlex 40 fail after power has been cycled. 2

      • Failure mode of capacitor is consistent with exposure to heat stress
        • Bulge at top creating crown effect
        • Separation from PCB material at the solder point

      Why does my PowerFlex 40 fail after power has been cycled. 3