Vol. EE Reference
Chapter 9 Circuit Schematic Symbols


types of diodes

A diode is an electronics component made from a combination of a P-type and N-type semiconductor material, known as a p-n junction, with leads attached to the two ends.

These leads allow you to easily incorporate the diode into your electronic circuits.

The lead attached to the n-type semiconductor is called the cathode. Thus, the cathode is the negative side of the diode.

The positive side of the diode — that is, the lead attached to the p-type semiconductor — is called the anode.