PHAnderson sells LEDs with a built in current limiting resistor so you can connect them directly to 5V. These are very handy for use with solderless breadboards. I have been looking for another source as he only has them in red.
The Newark site shows LEDs with Vf ranging from 1V to over 100V. If I buy one with a Vf of 5V am I getting a LED that does not require an external resistor to work at 5V?
If the large Vf is not due to an internal resistor what is happening? A link would be sufficent on this last question.
Thanks.
The Newark site shows LEDs with Vf ranging from 1V to over 100V. If I buy one with a Vf of 5V am I getting a LED that does not require an external resistor to work at 5V?
If the large Vf is not due to an internal resistor what is happening? A link would be sufficent on this last question.
Thanks.