IR Leds from ~1.2Vf to 1.3Vf
red LEDs from ~1.6Vf to 1.9Vf
yellow and orange and green LEDs from ~1.8Vf to 2.0Vf
white and blue LEDs from ~2.9Vf to 3.3Vf
each manufacturer is usually different.
I don't have any manufacturer codings on any of my LEDs, that means a random LED pulled from the drawer could be anywhere in the range for that type !
red LEDs from ~1.6Vf to 1.9Vf
yellow and orange and green LEDs from ~1.8Vf to 2.0Vf
white and blue LEDs from ~2.9Vf to 3.3Vf
each manufacturer is usually different.
I don't have any manufacturer codings on any of my LEDs, that means a random LED pulled from the drawer could be anywhere in the range for that type !
Voltage will depend on the current. As long as you are between 1 and 10mA, what AndrewT stated is pretty good. However I've operated LEDs at 0.5mA and the voltage is lower because you are down in the knee of the curve for the I/V relationship.
Some of the newer low current LEDs will turn on at very low currents, but they are almost exclusively in SMT packages so you probably won't encounter them.
Nothing like guessing which the clear plastic LED is, white or IR?
Some of the newer low current LEDs will turn on at very low currents, but they are almost exclusively in SMT packages so you probably won't encounter them.
Nothing like guessing which the clear plastic LED is, white or IR?
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.