1. Power dissipation
Zener diodes are most commonly used in low power applications, so it is important to choose a diode with a low power dissipation.
2. Operating temperature
Zener diodes are typically used in temperatures between -40°C and 125°C.
3. Voltage rating
Zener diodes are rated for a specific voltage. Make sure the diode you choose can handle the voltage you will be using it at.
4. Current rating
Zener diodes are rated for a specific current. Make sure the diode you choose can handle the current you will be using it at.
Zener diodes are not always the most expensive option, but they may have higher power ratings or be able to handle higher currents. It is important to choose a diode that will meet your specific needs.