Question about LED

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1

Hi everone,

I have one question: I have a 3.3Volt [LED, and a 3.3V power source. Do I still need a resistor inline with the LED?

Thanks

Lisa](http://www.led.de/)

2

Yes, even a 0.1 volt excess could create a large current, as the LED/diode is practically a short. And don’t put too much emphasis on that led being 3.3 volt. It varies based on the current running through it. The 3.3 volt is a ballpark figure.

If the powersupply can sustain more than what the LED can handle then it will burn!