Strong Drive Saturates at Load Demand - Electronic Circuits XI: Transistor Switching and Device Regions Step by Step

At and above load demand, the load path caps collector current. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

The equality boundary is counted as saturation

Here beta times base current equals the load demand: 3 A equals 3 A.

\beta I_B=3\ \text{A}=I_\text{load}

In saturation the load caps the collector current

The collector current is capped at 3 A, and the ideal training model puts the output at 0 V.

I_C=3\ \text{A},\quad V_\text{out}=0\ \text{V}