Common diode symbols

Common diode symbols

diode symbol

Figure 1: Ordinary diodes, the first one is the domestic standard drawing method,

Figure 2 Bidirectional transient suppression diode.
Figure 3 shows photosensitive or photodiodes and light-emitting diodes respectively.
Figure 4 shows a varactor diode, and Figure 5 shows a Schottky diode.
Figure 6 is a constant current diode.
Figure 7 shows the Zener diode.
The traditional drawing method still has a circle, which is basically no longer used now.

Common diode symbols