BJT transistors and Icb0

Hello,

Working in active, is the current generated in the colector-base due to inverse biasing, called Icb0?? I think it is not a real saturation current.
for example, in Ebers-Moll model, Ics represents a real saturation current, but is not the same as Icb0.

Ie in Ebers-Moll model is something like :
Ie = -Ies*(exp(qVe/KT)-1) + ar*Ics*(exp(qVc/KT)-1)

The picture atached has a circle around the current I'm asking for.
Is is Icb0 ?? (so, it is not Ics?)

Thanks a lot.

patroclus said:

The picture atached has a circle around the current I'm asking for.
Is is Icb0 ?

Click to expand...

Not it isn't.

Icbo is the "reverse collector saturation current" when the emitter current is zero.
Do a Google search.
I shall be away from home and a pc for some days so won't be able to respond.