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Design Heat sink for Bridge Rectifier GBU/GBJ/GBP Packages

Discussion in 'The Projects Forum' started by witssq, Apr 30, 2010.

  1. witssq

    Thread Starter Active Member

    Mar 29, 2009
    I am designing 7.5Ax5V linear power.
    On this project, I would like to select bridge rectifier with 1.1V Voltage drop, 15A average rating.

    7.5Ax1.1V = 8.25W power dessipation
    Thermal Resistance for Heat Sink = ((100 Degree C(Tjmax) - 50 Deg. C(Ambient))/8.26) - 3(Resistance for Case to Sink) = 3 Deg. C/W

    But, I cannot find for suitable heat sink for GBJ or GBU anywhere.

    Please advise me of whether above calculation is correct.

    How could I find the heat sink for GBJ or GBU packages(Bridge Rect.)
    or any alternatives ?

    The kind response would be highly appreciated.

    SunSung Hwang
  2. bertus


    Apr 5, 2008