Quote:
Originally Posted by BrianG
Pat, go get yourself a nice coffee and donut/bagel. Better yet, send an employee out to get them since it's probably snowing as much if not more than it is here a couple hours north of you. 
What is it about the 4833 that makes them less capable? IIRC, a while back you mentioned something about switching losses but not sure. |
Well, a couple of things.
The 4833 has a poor gate-drain/gate-source charge ratio. This means they can't be switched very hard without shoot-through. This also means they ring more, which causes more switching losses.
They also have about 30% higher RDSon, which means higher i^2R losses. (1.5 millohms for the 4901, 2.0 milliohm for the 4833)
So, in short, they run much hotter at the same current than the 4901. But they are quite a bit cheaper, and more available.