On Thu, Sep 21, 2006 at 09:16:32PM -0700, Vitaliy wrote:

> Regulus Berdin wrote:
> > Vitaliy wrote:
> >> Can someone explain to me what defines the maximum current via a 
> >> transistor?
> >> Since Imax * Vce != Pmax...
> >
> > Maximum current thru a transistor is when Vce is saturated (full
> > conducting).  While Pmax is achieved when it is half-conducting and
> > dissipating the power used as heat.
> 
> Unfortunately, this doesn't answer my question. If Pmax is what defines 
> Imax, why then when the transistor is saturated, Imax * Vce < Pmax ?
> 
> If the maximum power dissipation is not the limiting factor for the maximum 
> current in a saturated transistor, what is? 
> 
I think there there is a physical limitation at the weld connecting the lead to the
wafer.
Ray Warren
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