# What are the “blind spots” of the Ebers-Moll bipolar junction transistor model?

I saw this sentence from one of @Dave's excellent answers:

If the collector is open-circuit, all of this current flows out the base connection. But as long as there's at least a small positive bias on the collector-base junction, most of the current is diverted to the collector and only a small fraction remains to flow out of the base.

Although I can understand why it's happening, it seems that the Ebers-Moll equations can't predict this, which really concerns me. I want to know what else can't the EM model explain, so that I won't fall into the pit when facing such situations.

As I know so far, "such situations" include

1. High frequency
2. $V_{bc}=0$
3. Early effect

Any supplements?

• If you are using the approximated model (as found in many texts), then at the edges of operation, you will not properly predict transistor performance. – Peter Smith Mar 28 '16 at 12:07