High Efficiency Synchronous Rectification in SMPS Uninterruptible Power Supply Hard Switched and High Frequency Circuits S D G GD S Gate Drain Source D2Pak IRFS4321PbF TO-262 IRFSL4321PbF S D G D S G D IRFS4321PbF IRFSL4321PbF * RθJC (end of life) for D2Pak and TO-262 = 0.65°C/W. This is the maximum measured value after 1000 temperature
