And, we're defining the current again as a current in this direction through
the diode and the voltage drop this way, where the polarity is shown here.
So I'm, I'm plotting the, the current versus the voltage, and
a typical diode has this characteristic curve.
And we define the different regions, operating regions.
The forward bias region is shown here, and
that's the region which the current will flow in the forward direction.
You can see that the current is positive here.
Now, reverse bias is virtually 0 current, and
that's because the current does not want to flow in this direction.
We get, maybe a little bit of leakage current.
Now the third region is the breakdown region, and that's when I,
I have a voltage so large but negative, that the diode breaks down and
it starts to conduct anyway.
Now, most diodes are operated in the reverse bias and the forward bias region.
So these two regions right here.
There are some diodes which are purposely designed to work in the breakdown region.