Today I watched All You Need To Know About The Diode Test Mode On Your Multimeter To Fix Stuff. Richard listed some typical forward voltages across various types of diodes:
- Schottky Diode ~ 0.15V
- Germanium Diode ~ 0.22V – 0.28V
- Fast Switching Diode ~ 0.4V – 0.45V
- Silicon Diode ~ 0.5V – 0.6V
- Red LED ~ 1.7V – 1.8V
- Yellow LED ~ 1.8V
- Green LED ~ 2.2V – 2.3V